Drinking Water 2003
10 Hartlepool Water
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Overall water quality supplied by Hartlepool Water in 2003: |
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Water quality at treatment works, in service reservoirs and in water supply zones
To be wholesome, water must comply with the water quality standards for the parameters set out in the Water Supply (Water Quality) Regulations 1989. In 2003, the Company carried out a total of 2,699 tests on samples of water leaving its three water treatment works, from its six service reservoirs and from consumers’ taps in its four water supply zones. Of these, 99.81% (2,694) complied with the standards set down in the Regulations. However, 0.19% (five) tests did not meet the standards, A list of the parameters, the relevant standards and their significance can be found at the beginning of this section.
Water quality leaving treatment works
A comparison of the Company’s performance in 2003 with data for 2002 and 2001, is given below. There have been no differences over the last three years in the number of treatment works, and in the number of tests carried out on samples from treatment works, in which coliforms or faecal coliforms were detected.
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All of the Company’s treatment works complied with the total and faecal coliform standards in 2003.
The Company has no sites that require regulatory monitoring for Cryptosporidium.
Water quality in service reservoirs
A comparison of the Company’s performance in 2003 with data for 2002 and 2001, is given below. Differences over the last three years in the number of service reservoirs, and in the number of tests carried out on samples from service reservoirs, in which coliforms or faecal coliforms were detected were not considered significant.
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All of the Company’s service reservoirs complied with the total and faecal coliform standards in 2003.
Water quality in water supply zones
The table below shows the data for the key parameters and any other parameters where there was a failure of the standard. All other parameters were fully compliant. A comparison is also given for parameters failing the standards in 2002 and 2001.
| Parameter | Total number of tests |
Tests not meeting standard |
Number of failures covered by Undertakings |
Number of zones not complying with the standards (number of zones in 2003 = 4)* |
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|---|---|---|---|---|---|---|---|
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No
|
%
|
2003
|
2002
|
2001
|
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| Coliforms |
240
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Faecal coliforms |
240
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Colour |
16
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Turbidity |
16
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Odour |
8
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Taste |
8
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Hydrogen ion |
16
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Nitrate |
16
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Nitrite |
16
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Aluminium |
16
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Iron |
120
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Manganese |
120
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Lead |
10
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| PAH |
47
|
4
|
8.51
|
0
|
2
|
2
|
1
|
| Trihalomethanes |
4
|
0
|
0.00
|
0
|
0
|
0
|
0
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| Total pesticides |
4
|
0
|
0.00
|
0
|
0
|
0
|
0
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| Other pesticides |
63
|
0
|
0.00
|
0
|
0
|
0
|
0
|
| Benzo 3,4 Pyrene |
47
|
1
|
2.13
|
0
|
0
|
0
|
0
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| All others |
340
|
0
|
0.00
|
0
|
0
|
0
|
0
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| TOTAL |
1,347
|
5
|
0.37
|
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| *4 zones in 2002 and in 2001 | |||||||
The new Regulations
In 2003, the Company carried out monitoring for the six new parametric values set down in the new Water Supply (Water Quality) Regulations 2000. These Regulations came into force on 25 December 2003. The results are shown in the table below.
| Parameter | Total number |
New standard |
Tests not meeting |
|---|---|---|---|
of tests |
the new standard |
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| Benzene | 10 |
1.0 µg/l |
0 |
| Bromate | 10 |
10.0 µg/l |
0 |
| 1,2 dichloroethane | 10 |
3.0 µg/l |
0 |
| Nitrite (ex-water treatment works) | 10 |
0.1 mg/l |
0 |
| Clostridium perfringens | 0 |
0/100ml |
0 |
| Enterococci | 14 |
0/100ml |
0 |
Compliance data for 2003 have also been analysed against the revised standards and the results are shown in the following table.
| Parameter | Total number of tests |
Current standard |
Number of tests not meeting current standard |
Revised standard |
Number of tests not meeting revised standard |
|
|---|---|---|---|---|---|---|
| Antimony |
4
|
10.0 µg/l |
0
|
5.0 µg/l |
0
|
|
| Arsenic |
4
|
50.0 µg/l |
0
|
10.0 µg/l |
0
|
|
| Boron |
4
|
2.0 mg/l
|
0
|
1.0 mg/l
|
0
|
|
| Copper |
7
|
3.0 mg/l
|
0
|
2.0 mg/l
|
0
|
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| Lead |
10
|
50.0 µg/l |
0
|
25.0 µg/l |
0
|
|
|
10.0 µg/l* |
0
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| Nickel |
4
|
50.0 µg/l |
0
|
20.0 µg/l |
0
|
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| Nitrite (at consumers taps) |
16
|
0.1 mg/l
|
0
|
0.5 mg/l
|
0
|
|
| PAH |
47
|
0.2 µg/l |
4
|
0.1 µg/l |
1
|
|
|
Tetrachloroethene Trichloroethene |
4 |
10.0 µg/l 30.0 µg/l |
0 0 |
} 10.0 µg/l |
0
|
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| * Final standard not applicable until 2013 | ||||||
Details of the new and revised standards can be found in chapter J ‘New Regulations and Associated Programmes of Work’.
Audit and inspection
The Company was inspected or audited by the Inspectorate or its appointed consultants on a number of occasions during 2003. Where relevant, report summaries are available in the ‘Business and Technical’ section of the Inspectorate’s web site under ‘Audit and inspection’. Details of the subject areas audited or inspected are given in the following paragraphs:
Follow up of recommendations made during the 2002 inspections or in connection with water quality incidents
No recommendations were made during the inspection in 2002 of the Company.
Audit trails of selected microbiological test results
A vertical audit was carried out on one test result selected at random for the period October 2002. The Company is being required to take action on deficiencies identified with the transport of samples.
Audit trails of selected nonmicrobiological test results
Vertical audits were carried out on three test results selected at random for the period June to October 2002. The Company is being required to take action on deficiencies identified with sample transport conditions in relation to one sample and for deficiencies identified with its contract laboratory on the method of analysis, the timeliness of analysis and the records of analysis.
Audit of sampling arrangements
Audits carried out on general sampling arrangements and on one sample round were satisfactory.
Audit of drilling and tapping operations
Audits carried out on operations associated with the drilling and tapping of water mains were generally satisfactory although one deficiency was identified regarding procedures for employing contractor’s staff.
Audit of plumbosolvency treatment and control programmes
Progress with the programme of work for plumbosolvency treatment and control measures for lead was found to be satisfactory.
Incidents
No incidents were notified by the Company during 2003.
Enforcement action
No enforcement action was considered for the Company as a result of the Inspectorate’s activities during 2003.
Improvement programmes
Water treatment works/service reservoirs
The Company has no improvement programmes associated with treatment works and service reservoirs.
Distribution
The Company completed its distribution system undertaking by December 2001.
Lead
The Company’s Regulation 41 programme of work to meet the revised standard for lead set down in the new Water Supply (Water Quality) Regulations 2000 is progressing satisfactorily. Plumbosolvency treatment measures were installed at all sites specified in the programme by 25 December 2003.
