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EAST RENFREWSHIRE COUNCIL Region: South West Supply zones in East Renfrewshire Corsehouse
Daer B
Glassford
Milngavie C1
Milngavie M2
Milngavie South Moorehouse
Neilston
Picketlaw
South Moorehouse
Picketlaw South Moorehouse |  |
Quality of Public Water Supplies
Scottish Water carried out at total of 9,857 tests on tap samples taken in the water supply zones which supply East Renfrewshire. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 773 | 7 | 0.9 | 3 | 99.51 |
|---|
Faecal coliforms | 773 | 0 | 0 | 0 | 100.00 |
|---|
Colour | 296 | 0 | 0 | 0 | 100.00 |
|---|
Turbidity | 296 | 0 | 0 | 0 | 100.00 |
|---|
Hydrogen ion (pH) | 296 | 1 | 0.34 | 1 | 99.86 |
|---|
Aluminium | 296 | 2 | 0.68 | 2 | 98.33 |
|---|
Iron | 296 | 4 | 1.35 | 3 | 98.74 |
|---|
Manganese | 295 | 2 | 0.68 | 2 | 99.44 |
|---|
Lead | 79 | 1 | 1.26 | 1 | 98.75 |
|---|
Trihalomethanes | 79 | 9 | 11.39 | 5 | 88.21 |
|---|
Other Parameters | 6,378 | 3 | 0.05 | 3 | |
|---|
All Parameters | 9,857 | 29 | 0.29 | | 99.54 |
|---|
There were nine exceedences of the standard for trihalomethanes and seven for coliforms in the zones covering East Renfrewshire. These were largely in the supply zones served by Milngavie WTW, and compliance will improve once the new water treatment works under construction at Milngavie is commissioned.
Local Authority Comments
East Renfrewshire Council Environmental Health Department report that they were generally satisfied with the quality of water supplied to the area by Scottish Water in 2005. They feel that their organisation has a good relationship with Scottish Water and that water quality information provided to themselves and the public during 2005 was usually accurate.
Quality of Private Water Supplies
There are 178 private water supplies in the area. These are broken down as follows:
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
178 | 89,311 | 463 | 0.52 | 0 | 167 | 8 | 3 | 11 |
The local authority is responsible for testing and monitoring the quality of private water supplies. Data from samples taken in 2005 are summarised below:
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
164 | 2 | 0 | 0 |
All data on private water supplies have been provided by the local authority. For definitions of private supply categories, please refer to section 4B of this report.
CITY OF EDINBURGH COUNCIL Region: South East Supply zones in Edinburgh Alnwickhill A
Alnwickhill B
Balmore E
Balmore F
Chalkieside
Fairmilehead A
Fairmilehead B
Hillend
Marchbank A
Marchbank B |  |
Quality of Public Water Supplies
Scottish Water carried out at total of 17,198 tests on tap samples taken in the water supply zones within the City of Edinburgh. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 1567 | 10 | 0.64 | 6 | 99.34 |
|---|
Faecal coliforms | 1569 | 1 | 0.06 | 1 | 99.93 |
|---|
Colour | 533 | 30 | 5.63 | 3 | 95.16 |
|---|
Turbidity | 533 | 0 | 0 | 0 | 100.00 |
|---|
Hydrogen ion (pH) | 533 | 0 | 0 | 0 | 100.00 |
|---|
Aluminium | 534 | 0 | 0 | 0 | 100.00 |
|---|
Iron | 534 | 3 | 0.56 | 3 | 99.45 |
|---|
Manganese | 534 | 1 | 0.19 | 1 | 99.72 |
|---|
Lead | 80 | 2 | 2.5 | 1 | 97.50 |
|---|
Trihalomethanes | 81 | 0 | 0 | 0 | 100.00 |
|---|
Other Parameters | 10,700 | 18 | 0.17 | | |
|---|
All Parameters | 17,198 | 65 | 0.38 | | 99.71 |
|---|
There were 30 failures of the PCV for colour in 2005. These failures were mainly within the supply zone supplied by the Alnwickhill treatment works which serves parts of Musselburgh. In 2005, Scottish Water gave an Undertaking to Scottish Ministers to improve treatment at the works so that colour was removed. This work was completed progressively through the latter part of 2005, and an improvement should be evident in 2006.
Nine of the failures for other parameters were exceedences of the nitrite standard in Marchbank A supply zone.
Incidents or Events
There were no drinking water quality incidents or events reported within the Edinburgh area during 2005.
Local Authority Comments
City of Edinburgh Council did not comment on drinking water quality in 2005.
Quality of Private Water Supplies
There are 13 private water supplies in the area. These are broken down as follows:
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
13 | 448,624 | 128 | 0.03 | 0 | 12 | 1 | 0 | 1 |
The local authority is responsible for testing and monitoring the quality of private water supplies. Data from samples taken in 2005 are summarised below:
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
0 | 0 | 0 | 0 |
All data on private water supplies have been provided by the local authority. For definitions of private supply categories, please refer to section 4B of this report.
COMHAIRLE NAN EILEAN SIAR COUNCIL Region: Western Isles, Orkney and Shetland Supply zones in Na h-Eileanan Siar Ardvourlie, Barra, Bayhead, Benbecula, Berneray, Cliasmol, Eriskay, Geocrab, Govig, Gravir, Hushinish, Lemreway, Lochmaddy, Maaruig, Meavaig, Ness, Orasay, Rhenigidale, South Uist, Stornoway, Suainaval, Tarbert, Tolsta, West Lewis |  |
Quality of Public Water Supplies
Scottish Water carried out at total of 5,048 tests on tap samples taken in the water supply zones within Na h-Eileanan Siar. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 242 | 1 | 0.41 | 1 | 98.96 |
|---|
Faecal coliforms | 242 | 1 | 0.41 | 1 | 98.96 |
|---|
Colour | 98 | 5 | 5.1 | 4 | 92.71 |
|---|
Turbidity | 98 | 1 | 1.02 | 1 | 97.92 |
|---|
Hydrogen ion (pH) | 98 | 8 | 8.16 | 6 | 86.46 |
|---|
Aluminium | 98 | 1 | 1.02 | 1 | 98.61 |
|---|
Iron | 98 | 8 | 8.16 | 5 | 85.42 |
|---|
Manganese | 98 | 3 | 3.06 | 3 | 97.40 |
|---|
Lead | 74 | 0 | 0 | 0 | 100.00 |
|---|
Trihalomethanes | 73 | 0 | 0 | 0 | 100.00 |
|---|
Other Parameters | 3,829 | 1 | 0.03 | 1 | |
|---|
All Parameters | 5,048 | 29 | 0.57 | | 99.03 |
|---|
There have been some significant improvements in drinking water quality compliance in Na h-Eileanan Siar in 2005. The colour, pH, iron and THM parameters have all shown a large reduction in the number of exceedences during 2005 against those in 2004 (18, 15, 19 and 12 respectively). Much work has been undertaken to improve the standard of water treatment processes in the islands, regulated via the Authorised Departure process, and this work is ongoing.
Details of Selected Water Quality Incidents
Location | Barra WTW |
|---|
Region | Western Isles, Orkney and Shetland |
|---|
Local Authority Area | Eilean Siar |
|---|
Date | June 2005 |
|---|
Aluminium exceedence caused by treatment failure |
Operator error resulted in high aluminium concentrations in distribution and corresponding exceedences of the regulatory standard. Telemetry alarms were correctly received by the control centre, however these were not passed on to local staff, resulting in a delay in response to this treatment failure. Scottish Water has agreed to make a number of procedural improvements in response to this incident.
Local Authority Comments
Comhairle nan Eilean Siar Environmental Health Department report that they were generally satisfied with the quality of water supplied to the area by Scottish Water in 2005, although there were ongoing issues with taste and odour complaints. They feel that their organisation has a good relationship with Scottish Water at a local level, although communications with central staff on the mainland regarding PCV failures could be improved. Many of the supplies in Na h-Eileanan Siar are disinfected by chloramination, and it is felt that the information provided by Scottish Water on this process could be better.
Quality of Private Water Supplies
There are 38 private water supplies in the area. These are broken down as follows:
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
38 | 26,502 | 195 | 0.74 | 0 | 35 | 2 | 1 | 3 |
The local authority is responsible for testing and monitoring the quality of private water supplies. Data from samples taken in 2005 are summarised below:
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
0 | 3 | 0 | 0 |
All data on private water supplies have been provided by the local authority. For definitions of private supply categories, please refer to section 4B of this report.
FALKIRK COUNCIL Region: South West Supply zones in Falkirk Glendevon A
Balmore E
Balmore F
Pateshill
Balmore A
Balmore G
Carron Valley A
Carron Valley B
Turret A
Turret/Balmore/Carron Valley |  |
Quality of Public Water Supplies
Scottish Water carried out at total of 15,172 tests on tap samples taken in the water supply zones within Falkirk. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 1,396 | 7 | 0.5 | 6 | 99.33 |
|---|
Faecal coliforms | 1,397 | 0 | 0 | 0 | 100.00 |
|---|
Colour | 493 | 0 | 0 | 0 | 100.00 |
|---|
Turbidity | 493 | 1 | 0.2 | 1 | 99.72 |
|---|
Hydrogen ion (pH) | 493 | 0 | 0 | 0 | 100.00 |
|---|
Aluminium | 495 | 3 | 0.61 | 2 | 99.31 |
|---|
Iron | 495 | 1 | 0.2 | 1 | 99.71 |
|---|
Manganese | 495 | 3 | 0.61 | 2 | 99.15 |
|---|
Lead | 81 | 0 | 0 | 0 | 100.00 |
|---|
Trihalomethanes | 80 | 0 | 0 | 0 | 100.00 |
|---|
Other Parameters | 9,254 | 0 | 0 | 0 | |
|---|
All Parameters | 15,172 | 15 | 0.10 | | 99.94 |
|---|
The manganese failures all occurred within the Pateshill water supply zone. The aluminium failures were in zones supplied by Carron Valley WTW.
Local Authority Comments
Falkirk Council Environmental Health Department report that they were generally satisfied with the quality of water supplied to the area by Scottish Water in 2005, although there were a few problems in specific areas. They feel that their organisation has a good relationship with Scottish Water and that water quality information provided to themselves and the public during 2005 was usually accurate. They comment that Scottish Water could be more proactive in understanding consumer concerns and investigating their cause.
Quality of Private Water Supplies
There are eight private water supplies in the area. These are broken down as follows:
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
8 | 145,191 | 27 | 0.02 | 0 | 8 | 0 | 0 | 0 |
The local authority is responsible for testing and monitoring the quality of private water supplies. Data from samples taken in 2005 are summarised below:
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
0 | 2 | 0 | 0 |
All data on private water supplies have been provided by the local authority. For definitions of private supply categories, please refer to section 4B of this report.
FIFE COUNCIL Region: North East Supply zones in Fife
Glendevon A
Glendevon B
Glendevon/Glenfarg
Glenfarg
Lomond Hills
Newburgh
Turret A |  |
Quality of Public Water Supplies
Scottish Water carried out at total of 11,616 tests on tap samples taken in the water supply zones within Fife. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 1,129 | 6 | 0.53 | 4 | 99.56 |
|---|
Faecal coliforms | 1,129 | 0 | 0 | 0 | 100.00 |
|---|
Colour | 387 | 0 | 0 | 0 | 100.00 |
|---|
Turbidity | 387 | 0 | 0 | 0 | 100.00 |
|---|
Hydrogen ion (pH) | 387 | 0 | 0 | 0 | 100.00 |
|---|
Aluminium | 387 | 0 | 0 | 0 | 100.00 |
|---|
Iron | 387 | 0 | 0 | 0 | 100.00 |
|---|
Manganese | 387 | 0 | 0 | 0 | 100.00 |
|---|
Lead | 52 | 1 | 1.92 | 1 | 98.21 |
|---|
Trihalomethanes | 52 | 0 | 0 | 0 | 100.00 |
|---|
Other Parameters | 6,932 | 0 | 0 | 0 | |
|---|
All Parameters | 11,616 | 7 | 0.06 | | 99.51 |
|---|
The data suggests that water quality compliance in Fife is largely unchanged from 2004.
Details of Selected Water Quality Incidents
Location | Newburgh WTW |
|---|
Region | North East |
|---|
Local Authority Area | Fife |
|---|
Date | June 2005 |
|---|
Aluminium exceedence caused by treatment failure |
Disinfection failure for ten hour period. Alarms were not passed to operational staff via telemetry. No sample failed as a result of the incident.
Local Authority Comments
Fife Council did not comment on drinking water quality in 2005.
Quality of Private Water Supplies
There are 324 private water supplies in the area. These are broken down as follows:
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
324 | 349,429 | 2,842 | 0.81 | 0 | 293 | 19 | 12 | 31 |
The local authority is responsible for testing and monitoring the quality of private water supplies. Data from samples taken in 2005 are summarised below:
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
12 | 111 | 0 | 0 |
All data on private water supplies have been provided by the local authority. For definitions of private supply categories, please refer to section 4B of this report.
GLASGOW CITY COUNCIL Region: South West Supply zones in Glasgow City Balmore A, Balmore B, Balmore C5 North, Balmore C5 South, Balmore D, Burncrooks, Daer B, Daer Glassford, Milngavie C1, Milngavie C2, Milngavie C3, Milngavie C4, Milngavie M1, Milngavie M2, Milngavie M3, Milngavie M4a, Milngavie M4c, Milngavie M5, Drumchapel, Milngavie M5 Renfrew, Muirdykes, Picketlaw, South Moorehouse |  |
Quality of Public Water Supplies
Scottish Water carried out at total of 29,519 tests on tap samples taken in the water supply zones within Glasgow City boundary. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 2,710 | 24 | 0.88 | 12 | 99.23 |
|---|
Faecal coliforms | 2,709 | 2 | 0.07 | 2 | 99.94 |
|---|
Colour | 957 | 0 | 0 | 0 | 100.00 |
|---|
Turbidity | 956 | 0 | 0 | 0 | 100.00 |
|---|
Hydrogen ion (pH) | 957 | 2 | 0.21 | 2 | 99.80 |
|---|
Aluminium | 958 | 0 | 0 | 0 | 100.00 |
|---|
Iron | 958 | 5 | 0.52 | 4 | 99.59 |
|---|
Manganese | 957 | 3 | 0.31 | 3 | 99.77 |
|---|
Lead | 167 | 2 | 1.2 | 2 | 98.78 |
|---|
Trihalomethanes | 165 | 18 | 10.91 | 12 | 89.12 |
|---|
Other Parameters | 18,025 | 4 | 0.02 | 3 | |
|---|
All Parameters | 29,519 | 60 | 0.20 | | 99.66 |
|---|
There were 18 exceedences of the standard for trihalomethanes in the zones covering Glasgow. Compliance will improve once the new water treatment works under construction at Milngavie is commissioned.
The exceedences of the lead standard took place in Milngavie C1 and Balmore B supply zones.
Details of Selected Water Quality Incidents
Location | Milngavie WTW |
|---|
Region | South West |
|---|
Local Authority Area | Glasgow |
|---|
Date | September 2005 |
|---|
Disinfection failure resulting in microbiological exceedence in distribution |
A blockage in the chlorine dosing system resulted in a loss of disinfection to one of the mains leaving the works for a period of eight hours. This main supplies 62,600 people in Glasgow. A microbiological sample subsequently failed for coliforms and E.coli. Issues surrounding the maintenance of equipment and escalation procedures compounded this incident and are to be addressed by Scottish Water.
Local Authority Comments
Glasgow City Council Environmental Health Department report that they were generally satisfied with the quality of water supplied to the area by Scottish Water in 2005, although they comment that they receive many complaints about water quality form consumers. They feel that their organisation has a satisfactory relationship with Scottish Water and that water quality information provided to themselves and the public during 2005 was usually accurate.
Quality of Private Water Supplies
There are no private water supplies in the area.
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
0 | 577,869 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
0 | 0 | 0 | 0 |
HIGHLAND COUNCIL Region: North West Supply zones in Highland |  |
Achiltibuie
Achmelvich
Acharacle
Achaphubuil
Achmore
Achnasheen
Alligin
Altnaharra
Applecross
Ardgour
Arnisdale
Assynt
Aultbea
Backies
Badachro
Badcaul
Ballachulish
Balmacara
Balnain
Beasdale
Blackpark
Bliach
Bohuntin
Bonar Bridge
Bracadale Skye
Braes Skye
Broadford Skye
Cannich
Carbost Skye
Clunas
Coiltie
Cromarty
Dalchreichart
Dalwhinnie
Diabeg
Dores
Dornie
Dornoch
Drimnin
Drumbeg
Drumfearn Skye
Durness
Earlish Skye
Elgol Skye
Elphin Knochan
Fort Augustus
Fort William
Gairloch
Garve
Glenachulish
Glencoe
Glenconvinth
Glendale Skye
Glenelg
Glenfinnan
Glenuig
Gorthleck
Hoy Calder
Inchlaggan
Inverasdale
Invergarry
Inverinate
Invermoriston
Inverness | Kilchoan
Kilmaluag Skye
Kilmuir Skye
Kinlochbervie
Kinlochewe
Kinlochleven
Kishorn
Kyle of Lochalsh
Kylesku
Laggan Bridge
Laid
Laide
Letterfearn
Lochaline
Lochcarron
Lochend
Lochinver
Loth & Portgower
Loy
Mallaig
Marrel
Mellon Udrigle
Melness
Nam Bat
Navidale
Nedd
Newmore
Onich
Osedale Skye
Oykel Bridge
Penifiler Skye
Raasay Skye
Ratagan
Rosemarkie
Roybridge
Salen
Sallachy
Sanna
Savalbeg
Sconser Skye
Scourie
Shiel Bridge
Shieldaig
Spean Bridge
Spynie
Staffin Skye
Stoer
Storr Forest Skye
Strathcarron
Strollamus Skye
Strontian
Tarskavaig Skye
Teangue Skye
Tomatin
Tomich
Torridon
Torrin Skye
Trislaig
Ullapool
Waternish Skye
Waterstein Skye |
Quality of Public Water Supplies
Scottish Water carried out at total of 28,444 tests on tap samples taken in the water supply zones within the Highlands. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 1,588 | 26 | 1.64 | 19 | 97.96 |
|---|
Faecal coliforms | 1,588 | 9 | 0.06 | 8 | 98.73 |
|---|
Colour | 606 | 41 | 6.77 | 31 | 89.47 |
|---|
Turbidity | 606 | 0 | 0 | 0 | 100.00 |
|---|
Hydrogen ion (pH) | 607 | 38 | 6.26 | 25 | 90.33 |
|---|
Aluminium | 607 | 8 | 1.32 | 7 | 98.71 |
|---|
Iron | 607 | 15 | 2.47 | 12 | 96.10 |
|---|
Manganese | 607 | 1 | 0.16 | 1 | 99.87 |
|---|
Lead | 411 | 3 | 0.73 | 3 | 98.90 |
|---|
Trihalomethanes | 413 | 47 | 11.38 | 26 | 90.41 |
|---|
Other Parameters | 20,804 | 13 | 0.06 | 12 | |
|---|
All Parameters | 28,444 | 201 | 0.71 | | 99.07 |
|---|
Compliance for several parameters has improved in 2005. There were fewer failures of the standards for colour, pH, iron and trihalomethanes compared with 2004. It is likely that this is due to the intensive capital investment in water treatment facilities which is currently underway. This is replacing many sites which previously consisted of a simple disinfection process with a multi-stage treatment process which is capable of treating water to current standards and providing a barrier to Cryptosporidium.
Despite these improvements, it is notable that the number of regulatory samples containing coliforms in 2005 was more than double that of 2004. There were also a number of incidents involving the disinfection process which occurred in the Highlands in 2005.
Details of Selected Water Quality Incidents
Location | Glenconvinth WTW |
|---|
Region | North West |
|---|
Local Authority Area | Highland |
|---|
Date | Nov 2005 |
|---|
Aluminium sulphate accidentally discharged into supply |
During commissioning of the new water treatment works, a tank containing a solution of aluminium sulphate was allowed to drain into the raw water supply to the existing treatment works and onwards into supply. It was later established that concentrations of aluminium at consumers' taps did not exceed the regulatory standard as a result of this incident due to the diluting effect of water already in supply.
As a result of this incident, Scottish Water has agreed to put in place measures to improve safeguards in place when construction work is taking place at sites whilst they are in supply. They also propose to improve the mechanisms for reporting incidents and "near misses" within the company.
The DWQR expressed concern over the time taken to report the incident but welcomed the proposed actions by Scottish Water.
Location | Sanna WTW |
|---|
Region | North West |
|---|
Local Authority Area | Highland |
|---|
Date | August 2005 |
|---|
Disinfection failure resulting in microbiological exceedences in distribution |
Damage to the chlorine monitoring system resulted in a loss of disinfection and a resulting microbiological exceedence from a consumer tap. Work to upgrade the site exacerbated the problem, as a telemetry outstation had not been correctly commissioned.
Location | Glenloy WTW |
|---|
Region | North West |
|---|
Local Authority Area | Highland |
|---|
Date | May 2005 |
|---|
Bacteriological Failures |
Heavy rain caused a deterioration in raw water quality. Chlorine concentrations dosed at the treatment works were lower than usual due to planned work, and the simple treatment process present was not able to cope with the poor quality. Three samples at the works, service reservoir and in distribution failed for E. coli and coliforms.
The works was mained out from the new works at Fort William shortly afterwards.
Location | Arnisdale Supply Zone |
|---|
Region | North West |
|---|
Local Authority Area | Highland |
|---|
Date | June 2005 |
|---|
Bacteriological Failure at Consumer Tap |
A routine sample from a consumer tap was discovered to contain E. coli and coliforms. Water treatment works operation and chlorine residuals were normal. A boil notice was issued on 14 June 2005 and lifted on 16 June following satisfactory samples. The cause of the failure was not clear.
Location | Scourie Supply Zone |
|---|
Region | North West |
|---|
Local Authority Area | Highland |
|---|
Date | May 2005 |
|---|
Bacteriological Failure at WTW |
A routine sample from the WTW was discovered to contain E. coli and coliforms. Disinfection had failed because the battery power supply had gone flat. The battery was replaced and chlorine dosing reinstated. The installation of telemetry at this site has been given a high priority.
Location | Kinlochleven Supply Zone |
|---|
Region | North West |
|---|
Local Authority Area | Highland |
|---|
Date | June 2005 |
|---|
Bacteriological Failure at WTW following disinfection failure |
A routine sample from the WTW was discovered to contain E. coli and coliforms. Disinfection had failed because of a power failure following a lightning strike. Chlorine dosing was reinstated and clear samples were obtained. Telemetry, which would have enabled earlier detection of the problem, was not operational at this site at the time. Scottish Water has agreed that improved communications in the Lochaber area is a priority.
Location | Salen WTW |
|---|
Region | North West |
|---|
Local Authority Area | Highland |
|---|
Date | September 2005 |
|---|
Disinfection failure resulting in microbiological exceedence at the works |
A blockage in the chlorine dosing system resulted in a loss of disinfection for a day. This was the culmination of ongoing problems with chlorine control during the refurbishment of the works.
Local Authority Comments
Highland Council Environmental Health Department did not comment on the quality of water supplied to the area by Scottish Water in 2005.
Quality of Private Water Supplies
There are 2,785 private water supplies in the area. These are broken down as follows:
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
2,785 | 208,914 | 13,743 | 6.58 | 0 | 2,101 | 270 | 344 | 684 |
The local authority is responsible for testing and monitoring the quality of private water supplies. Data from samples taken in 2005 are summarised below:
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
1,323 | 374 | 0 | 0 |
All data on private water supplies have been provided by the local authority. For definitions of private supply categories, please refer to section 4B of this report.
INVERCLYDE COUNCIL Region: South West Supply zones in Inverclyde Blairlinnans South
Dougliehill
Greenock
Kaim Lochwinnoch |  |
Quality of Public Water Supplies
Scottish Water carried out at total of 4,563 tests on tap samples taken in the water supply zones within Inverclyde. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 371 | 1 | 0.27 | 1 | 99.83 |
|---|
Faecal coliforms | 371 | 0 | 0 | 0 | 100.00 |
|---|
Colour | 138 | 0 | 0 | 0 | 100.00 |
|---|
Turbidity | 138 | 0 | 0 | 0 | 100.00 |
|---|
Hydrogen ion (pH) | 138 | 0 | 0 | 0 | 100.00 |
|---|
Aluminium | 138 | 0 | 0 | 0 | 100.00 |
|---|
Iron | 138 | 0 | 0 | 0 | 100.00 |
|---|
Manganese | 138 | 3 | 2.17 | 2 | 97.43 |
|---|
Lead | 32 | 0 | 0 | 0 | 100.00 |
|---|
Trihalomethanes | 32 | 0 | 0 | 0 | 100.00 |
|---|
Other Parameters | 2,929 | 2 | 0.07 | 2 | |
|---|
All Parameters | 4,563 | 6 | 0.13 | | 99.80 |
|---|
There were three manganese failures within the area in 2005, compared with none in 2004. The failures were in Dougliehill and Greenock supply zones. Although not demonstrated by the data, there have been problems in the area with high concentrations of iron due to the condition of cast iron mains. This has caused consumer complaints to the council as well as to DWQR. Scottish Water has responded by targeted mains rehabilitation and a wider survey to identify areas requiring further work, however this will take time and DWQR expects Scottish Water to take measures to maintain water quality until such work is complete.
Local Authority Comments
Inverclyde Council Environmental Health Department report that they were not satisfied with the quality of water supplied to the area by Scottish Water in 2005, largely due to the iron problems described. They feel that the relationship their organisation has with Scottish Water could be better and that Scottish Water needs to work to improve the accuracy of water quality information provided to themselves and the public. They highlight communication with consumers and the council as a definite area for improvement by Scottish Water, and have particular concerns over information provided by Scottish Water's contact centre.
Quality of Private Water Supplies
There are 57 private water supplies in the area. These are broken down as follows:
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
57 | 84,203 | 224 | 0.27 | 0 | 46 | 11 | 0 | 11 |
The local authority is responsible for testing and monitoring the quality of private water supplies. Data from samples taken in 2005 are summarised below:
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
1 | 15 | 0 | 0 |
All data on private water supplies have been provided by the local authority.
All data on private water supplies have been provided by the local authority. For definitions of private supply categories, please refer to section 4B of this report.
MIDLOTHIAN COUNCIL Region: South East Supply zones in Midlothian Alnwickhill B
Castle Moffat
Chalkieside
Fairmilehead A
Heriot
Hillend
Rosebery
Rosebery/Gourlaw
Rosebery Hopes |  |
Quality of Public Water Supplies
Scottish Water carried out at total of 10,402 tests on tap samples taken in the water supply zones within Midlothian boundary. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 815 | 7 | 0.86 | 4 | 99.41 |
|---|
Faecal coliforms | 815 | 0 | 0 | 0 | 100.00 |
|---|
Colour | 317 | 13 | 4.1 | 1 | 97.17 |
|---|
Turbidity | 317 | 0 | 0 | 0 | 100.00 |
|---|
Hydrogen ion (pH) | 317 | 1 | 0.31 | 1 | 99.54 |
|---|
Aluminium | 316 | 1 | 0.32 | 1 | 99.54 |
|---|
Iron | 317 | 2 | 0.62 | 2 | 99.54 |
|---|
Manganese | 317 | 1 | 0.31 | 1 | 99.69 |
|---|
Lead | 67 | 1 | 1.49 | 1 | 98.61 |
|---|
Trihalomethanes | 68 | 0 | 0 | 0 | 100.00 |
|---|
Other Parameters | 6,736 | 3 | 0.04 | 2 | |
|---|
All Parameters | 10,402 | 29 | 0.28 | | 99.85 |
|---|
There were 13 failures of the PCV for colour in 2005. These failures were within the supply zone supplied by the Alnwickhill treatment works which serves parts of Midlothian as well Edinburgh. In 2005, Scottish Water gave an Undertaking to Scottish Ministers to improve treatment at the works so that colour was removed. This work was completed progressively through the latter part of 2005, and an improvement should be evident in 2006.
The 7 samples containing coliforms were taken in the first four supply zones listed at the top of the page.
Local Authority Comments
Midlothian Council Environmental Health did not provide any comment on the drinking water quality in their area in 2005.
Quality of Private Water Supplies
There are 70 private water supplies in the area. These are broken down as follows:
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
70 | 80,941 | 471 | 0.58 | 0 | 68 | 1 | 1 | 2 |
The local authority is responsible for testing and monitoring the quality of private water supplies. Data from samples taken in 2005 are summarised below:
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
0 | 0 | 0 | 0 |
All data on private water supplies have been provided by the local authority. For definitions of private supply categories, please refer to section 4B of this report.
THE MORAY COUNCIL Region: North East/North West Supply zones in Moray Blairnamarrow
Herricks
Rochomie
Tomnavoulin
Turriff
Badentinan
Clarklyhill
Clunas
Glenlatterach
Spynie |  |
Quality of Public Water Supplies
Scottish Water carried out at total of 6,011 tests on tap samples taken in the water supply zones within Moray. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 396 | 3 | 0.76 | 2 | 99.63 |
|---|
Faecal coliforms | 396 | 0 | 0 | 0 | 100.00 |
|---|
Colour | 148 | 0 | 0 | 0 | 100.00 |
|---|
Turbidity | 148 | 1 | 0.67 | 1 | 99.17 |
|---|
Hydrogen ion (pH) | 148 | 1 | 0.67 | 1 | 97.50 |
|---|
Aluminium | 148 | 3 | 2.01 | 2 | 98.06 |
|---|
Iron | 148 | 2 | 1.34 | 2 | 98.89 |
|---|
Manganese | 148 | 1 | 0.67 | 1 | 99.17 |
|---|
Lead | 64 | 2 | 3.12 | 1 | 97.50 |
|---|
Trihalomethanes | 64 | 0 | 0 | 0 | 100.00 |
|---|
Other Parameters | 4,203 | 1 | 0.02 | 1 | |
|---|
All Parameters | 6,011 | 14 | 0.23 | | 99.75 |
|---|
Water quality compliance in Moray has shown a slight deterioration on 2004 for the turbidity, aluminium, iron and manganese parameters. The majority of these exceedences were from samples taken in the Herricks supply zone. Both failures for Lead were in the Rochomie supply zone.
THM compliance improved somewhat in 2005 as no failures were recorded, against three the previous year.
Details of Selected Water Quality Incidents
Location | Tomnavoulin WTW |
|---|
Region | North East |
|---|
Local Authority Area | Moray |
|---|
Date | July 2005 |
|---|
Membrane integrity failure leading to detection ofCryptosporidiumand boil notice |
Location | Blairnamarrow WTW |
|---|
Region | North East |
|---|
Local Authority Area | Moray |
|---|
Date | December 2005 |
|---|
Detection ofCryptosporidiumresulting in boil notice |
Local Authority Comments
The Moray Council Environmental Health Department report that they were satisfied with the quality of water supplied to the area by Scottish Water in 2005. They feel that their organisation has a good relationship with Scottish Water and that water quality information provided to themselves and the public during 2005 was usually accurate. They comment that the Moray Council received nine complaints about water quality in 2005, and where applicable these were dealt with efficiently by Scottish Water, although they also comment that there have been occasional communications problems with the company.
Quality of Private Water Supplies
There are 608 private water supplies in the area. These are broken down as follows:
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
608 | 86,940 | 3,498 | 4.02 | 0 | 558 | 0 | 50 | 50 |
The local authority is responsible for testing and monitoring the quality of private water supplies. Data from samples taken in 2005 are summarised below:
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
40 | 87 | 0 | 0 |
All data on private water supplies have been provided by the local authority. For definitions of private supply categories, please refer to section 4B of this report.
NORTH AYRSHIRE COUNCIL Region: South West Supply zones in North Ayrshire Amlaird
Ashgrove
Balmichael Arran
Bradan B
Camphill
Castlehill
Corrie Arran
Corsehouse
Greenock
Lochranza Arran |  |
Quality of Public Water Supplies
Scottish Water carried out at total of 8,945 tests on tap samples taken in the water supply zones within North Ayrshire. The table below provides details of the main parameters tested and totals for the other parameters.
Parameter | Total no.
of tests | Total no.
of fails | % of fails | Number of
Zones with
failures | Mean
Zonal
Compliance |
|---|
Total coliforms | 728 | 2 | 0.27 | 2 | 99.77 |
|---|
Faecal coliforms | 727 | 0 | 0 | 0 | 100.00 |
|---|
Colour | 281 | 0 | 0 | 0 | 100.00 |
|---|
Turbidity | 281 | 0 | 0 | 0 | 100.00 |
|---|
Hydrogen ion (pH) | 281 | 1 | 0.35 | 1 | 99.75 |
|---|
Aluminium | 281 | 3 | 1.07 | 3 | 98.36 |
|---|
Iron | 281 | 6 | 2.14 | 5 | 96.08 |
|---|
Manganese | 281 | 17 | 6.05 | 6 | 93.38 |
|---|
Lead | 67 | 0 | 0 | 0 | 100.00 |
|---|
Trihalomethanes | 67 | 1 | 1.49 | 1 | 98.70 |
|---|
Other Parameters | 5,670 | 2 | 0.03 | 2 | |
|---|
All Parameters | 8,945 | 32 | 0.36 | | 99.62 |
|---|
Generally, drinking water quality compliance in the area is the same or better than in 2004. Manganese, aluminium and iron are the exceptions, with a deterioration in compliance for all three parameters. The area has a particular problem with manganese, and there have been several notable discolouration incidents, especially affecting the Largs, West Kilbride and Dalry areas. Throughout the year, DWQR has been discussing solutions to this problem, and Undertakings are now in place for Castlehill and Camphill zones.
Local Authority Comments
North Ayrshire Council Environmental Health Department report that they were generally satisfied with the quality of water supplied to the area by Scottish Water in 2005, although they highlight the problems with manganese discolouration. They feel that their organisation has a satisfactory relationship with Scottish Water and that water quality information provided to themselves and the public during 2005 was accurate.
Quality of Private Water Supplies
There are 318 private water supplies in the area. These are broken down as follows:
Total
Private
Water
Supplies | Total
population | Population
on PWS | % Total
population
on PWS | Class 1A | Total
Class 1 | Total
Class 2(I) | Total
Class 2(ii) | Total
Class 2 |
|---|
318 | 135,817 | 1,632 | 1.2 | 0 | 281 | 13 | 27 | 37 |
The local authority is responsible for testing and monitoring the quality of private water supplies. Data from samples taken in 2005 are summarised below:
Number of Supplies
still to be tested | Number of Supplies
failing standards | Number
Improved | Improvement
Programmes |
|---|
40 | 30 | 0 | 0 |
All data on private water supplies have been provided by the local authority. For definitions of private supply categories, please refer to section 4B of this report.
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