Water Monitoring by Jersey New Waterworks Company Limited: Approval of 2015 Programme

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A decision made 6 October 2014:

Decision Reference: MD-PE-2014-0081
Decision Summary Title :	Water (Jersey) Law 1972 - Duty to Monitor Water	Date of Decision Summary:	25/09/14
Decision Summary Author:	Head of Water Resources - Environmental Protection	Decision Summary: Public or Exempt?	Public
Type of Report: Oral or Written?	Written	Person Giving Oral Report:
Written Report Title :	Water (Jersey) Law 1972 - Duty to Monitor	Date of Written Report:	25/09/14
Written Report Author:	Head of Water Resources - Environmental Protection	Written Report : Public or Exempt?	Public
Subject: Water (Jersey) Law 1972 - Duty to Monitor Water
Decision(s): The Minister for Planning and Environment approved the monitoring programme submitted by The Jersey New Waterworks Company Limited (Jersey Water) for the calendar year 2015.
Reason(s) for Decision: Under Article 10(4) of the Water (Jersey) Law 1972 as Amended, Jersey Water is required to submit details of its monitoring programme each year to the Minister for Planning and Environment for his approval. The monitoring programme has been reviewed by the Department, in consultation with Envionmental Health of Health and Social Services, and is deemed fit for purpose. The monitoring programme is based on best practice in England and Wales.
Resource Implications: Nil

Action required:

Notify Jersey Water confirming approval of the monitoring programme for 2015.

Signature:

Position:

Date Signed:

Date of Decision (If different from Date Signed):

Water Monitoring by Jersey New Waterworks Company Limited: Approval of 2015 Programme

DEPARTMENT OF THE ENVIRONMENT

ENVIRONMENT DIVISION

WATER (JERSEY) LAW 1972

ARTICLE 10 – DUTY TO MONITOR

(Public)

Purpose of the Report

The Minister for Planning and Environment (The Minister) is requested to approve the proposed monitoring programme of treated water for 2015 that was submitted by The Jersey New Waterworks Company Limited (Jersey Water).

Background

Under Article 10(4) of the Water (Jersey) Law, 1972 as Amended, Jersey Water is required to submit its monitoring programme for treated water each year for the approval by The Minister.

Discussion

The monitoring programme submitted has been reviewed by the Department of the Environment in consultation with Environmental Health of Health and Social Services and is deemed fit for purpose.

A copy of the proposed monitoring schedule for 2015 is attached to this report.

The monitoring programme is based on best practice in England and Wales in accordance with The Water Supply (Water Quality) Regulations 2000 (England and Wales).

Jersey Water continues to move towards a targeted and cost-effective risk-based approach to its monitoring programme; whereby the sampling frequency, location and the determinants sampled is based on a thorough examination of use (likely occurrence within Jersey Waters) and risk to the water supply/consumer.

This approach will also allow monitoring resources to be re-directed towards areas of concern on the raw water network complementing the introduction of Water Safety Plans (a catchment, risk-based approach to resource management)

Jersey Water does not propose any changes to its 2014 monitoring schedule.

Recommendation

The Minister approves the proposed monitoring programme submitted by Jersey Water for the calendar year 2015.

ii. Notify Jersey Water confirming approval of the monitoring programme for 2015.

Written by: Head of Water Resources, Environment Department

Approved by: Director of Environmental Protection

Attachments:

Proposed Regulatory Monitoring Schedule for the Year 2015 - Jersey Water

[File Ref]

Ministerial Decision ref: MD-PE-2014-0081

25 September 2014

Proposed Regulatory Monitoring Schedule For The Year 2015

Water Supply Zones

It is proposed that Jersey Water follow the same risk assessment based monitoring programme for 2015 as used in 2014.

Table 2

Check monitoring
Parameter	Proposed Sampling Frequency
E.coli	12 per 5,000 population ie 240
Coliform bacteria
Residual disinfectant
Aluminium	76
Ammonium	76
Colony counts	76
Colour	76
Conductivity	76
Cyanide 2	76
Hydrogen ion	76
Iron	76
Manganese	76
Nitrate	76
Nitrite	76
Odour	76
Taste	76
Turbidity	76

Table 2 (cont’d)

Audit monitoring
Parameter	Proposed Sampling Frequency
Aluminium	Sample as check
Antimony	1
Arsenic	1
Benzene	1
Boron	1
Cadmium	1
Chromium	1
Copper	8
Cyanide	Sample as check
1,2 dichloroethane	1
Enterococci	8
Iron	Sample as check
Lead	8
Manganese	Sample as check
Nickel	1
Nitrate	Sample as check
Nitrite	Sample as check
Pesticides and related products	8
Selenium	1
Sodium	1
Trichloroethene } Tetrachloroethene }	1
Tetrachloromethane	1
Trihalomethanes	8
Chloride	1
Sulphate	1
Total organic carbon	8
Gross alpha	4
Gross beta	4

The Company uses aluminium sulphate as a flocculant in the primary treatment process, therefore the sample frequency for aluminium will be at the check monitoring frequency.

As the water the Company uses originates from, or is influenced by, surface waters, the sampling frequency for iron and manganese will be at the check monitoring frequency.

The Company uses the chloramination disinfection process, therefore the sampling frequency for nitrate and nitrite will be at the check monitoring frequency.

Treatment Works and Supply Points

The Company has two water treatment works located at Augres WTW and Handois WTW. Both treatment works use clarifiers (chemical assisted sedimentation) for primary treatment, followed by rapid gravity filtration using dual media (anthracite and sand). During 2013 Augres WTW supplied an average of 9,631 m3/d and Handois WTW 9,668 m3/d.

The Company has a treated water service reservoirs (SR) at Westmount Road, St. Helier (9Ml capacity) and Les Platons, Trinity (9Ml capacity).

For the purpose of the monitoring regulations, Augres WTW and Handois WTW will be referred to as treatment works and all of the above sites (Augres WTW, Handois WTW, Westmount SR and Les Platons SR) will count as supply points.

Table 3 in schedule 3 of the Regulations sets out the frequency of sampling the treatment works or supply points as listed below.

Table 3

Item no	Substances and parameters	Proposed Sampling Frequency
1	E.coli	208
2	Coliform bacteria	208
3	Colony counts	208
4	Nitrite	104
5	Residual disinfectant	208
6	Turbidity	208
Subject to check monitoring
8	Conductivity	52
Subject to audit monitoring
9	Benzene	1
10	Boron	1
11	Bromate	8
12	Cyanide	8
13	1,2 dichloroethane	1
14	Fluoride	1
16	Nitrite	Sample as check
17	Pesticides and related products	8
18	Trichloroethene } Tetrachloroethene }	1
19	Tetrachloromethane	1
20	Chloride	1
21	Sulphate	1
22	Total organic carbon	8
24	Gross alpha	4
25	Gross beta	4

Parameters labelled as items 1 to 6 for sampling at the treatment works only.

Parameters labelled as items 7 to 25 are for sampling at supply points.

The Company uses the chloramination disinfection process, therefore the sampling frequency for nitrite will be at the check monitoring frequency as listed under item 4 in table 3.

The Company does not add sodium hypochlorite after the water has left the treatment works, therefore audit monitoring for bromate (a possible disinfection by-product) shall take place at the supply points.

Check monitoring of nitrite at the treatment works will continue at the reduced rate - results for the last two years have been well below the EU regulatory limit of 0.1 mg/l, the highest result being 0.016 mg/l.

It is proposed that analysis for the parameters given in the monitoring schedules will be undertaken by either the Company laboratory or their consulting analysts.

7th May 2014

Pesticides analysed for at the supply points and in the supply zone

Phenoxyalkanoic Acid Herbicides Oxynil Herbicides

Pentachlorophenol (PCP) 2,4-D.B. Bromoxynil

M.C.P.A. Chlorthal (supply points only) Ioxynil

2,4-D Triclopyr

Mecoprop Dichlorprop Triazole

2,4,5-Trichlorophenoxyacetic acid Dicamba

2,3,6-Trichlorobenzoic acid M.C.P.B Propiconazole

Tebuconazole

Urea Herbicides Triazines

Chlortoluron Isoproturon Atrazine Simazine

Linuron Diuron Prometryn Propazine

Carbetamide Monolinuron Trietazine Terbutryn

Methabenzthiazuron Terbuthylazine Cyanazine

Carbamate Others

Chlorpropham Glyphosate

Oxamyl Bentazone

Azoxystrobin

Boscalid

Clopyralid

Metazachlor