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Water Quality) Regulations 2016 (As Amended)

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Water Quality) Regulations 2016 (As Amended) THE WATER SUPPLY (WATER QUALITY) REGULATIONS 2016 (AS AMENDED) NOTICE UNDER REGULATION 28(4) NORTHUMBRIAN WATER LTD: AMP 7 Discolouration, Multiple Zones Version Number: 1 Site Names and References: Supply Systems Supply System Name Supply System Ref North Northumberland Potable Water System 1 YNSZ01 Mid Northumberland Potable Water System 2 YNSZ02 Tyne Valley Potable Water System 3 YNSZ03 Fontburn Potable Water System 4 YNSZ04 Wansbeck Potable Water System 5 YNSZ05 Tyneside Potable Water System 6 YNSZ06 North Tyne Potable Water System 7 YNSZ07 Weardale Potable Water System 8 YNSZ08 North Durham Potable Water System 9 YNSZ09 Durham Potable Water 11 YNSZ11 South Durham Potable Water System 13 YNSZ13 Teesdale Potable Water System 14 YNSZ14 Teesside Potable Water System 15 YNSZ15 East Tees Potable Water System 16 YNSZ16 Zones and their Corresponding water treatment works Zone Name Zone Corresponding Water Water Treatment Reference Treatment Works Works Reference N201 Fenham and Z0021408 Horsley WTW T0700330 Gosforth Whittle Dene WTW T0700351 Page 1 of 6 N203 High Service Z0021410 Horsley WTW T0700330 South Whittle Dene WTW T0700351 N206 Byker and Z0021412 Horsley WTW T0700330 Wallsend Whittle Dene WTW T0700351 N207 Low Service Z0021413 Horsley WTW T0700330 Gateshead Whittle Dene WTW T0700351 N208 Hillhead Z0021414 Horsley WTW T0700330 Whittle Dene WTW T0700351 N213 Birney Hill Z0021419 Horsley WTW T0700330 N217 Shotton Z0021422 Horsley WTW T0700330 Warkworth WTW - T0700349 Southern Trunk Main Supply N229 Gunnerton Z0021431 Gunnerton WTW T0700325 N230 Berwick Z0021432 Murton WTW T0700336 N231 Fowberry Z0021433 Fowberry WTW T0700323 N232 Warkworth Z0021434 Warkworth WTW - T0700388 Northern Trunk Main Supply N238 Fontburn Z0021438 Fontburn WTW T0004769 N239 Moorhouses Z0021439 Horsley WTW T0700330 Whittle Dene WTW T0700351 Fontburn WTW T0004769 Tosson WTW T0004807 N240 Whitley Bay Z0021440 Horsley WTW T0700330 Whittle Dene WTW T0700351 Fontburn WTW T0004769 Tosson WTW T0004807 N241 Thropton Z0021441 Tosson WTW T0004807 Rothbury And Longhorsley N242 Whittington Z0021442 Whittle Dene WTW T0700351 N244 Netherwitton Z0021443 Fontburn WTW T0004769 T201 Lartington WTW Z0021455 Lartington WTW - T0010145 To Longnewton Barnard Castle Supply Lartington WTW - Final T0005166 Supply T203 Longnewton To Z0021457 Lartington WTW - Final T0005166 Tees Industrial Estate Supply Broken Scar WTW - T0005104 Final Supply T204 Tees Industrial Z0021458 Lartington WTW - Final T0005166 Estate To Redcar Supply Broken Scar WTW - T0005104 Final Supply T206 Nunthorpe Z0021459 Lartington WTW - Final T0005166 Supply Broken Scar WTW - T0005104 Final Supply T207 Stockton Z0021460 Lartington WTW - Final T0005166 Supply Broken Scar WTW - T0005104 Final Supply Page 2 of 6 T208 Redcar Z0021461 Lartington WTW - Final T0005166 Supply Broken Scar WTW - T0005104 Final Supply T211 Ormesby And Z0021463 Lartington WTW - Final T0005166 Longbank Supply Broken Scar WTW - T0005104 Final Supply W201 Honey Hill Z0021466 Honey Hill WTW T0001706 W202 Honey Hill Z0021467 Honey Hill WTW T0001706 Castleside And Dyke Mosswood WTW - T0700335 Nook Durham Supply W203 Oliver Burn Z0021468 Honey Hill WTW T0001706 Mosswood WTW - T0700335 Durham Supply W205 Sacriston Z0021469 Mosswood WTW - T0700335 Durham Supply W206 Derwent Trunk Z0021470 Mosswood WTW - T0700335 Main South And Durham Supply Durham W207 Ferryhill Z0021471 Mosswood WTW - T0700335 Fishburn And Durham Supply Spennymoor W208 Wear Valley Z0021472 Wear Valley WTW T0015216 W211 Pelton Z0021473 Honey Hill WTW T0001706 Mosswood WTW - T0700335 Durham Supply Legal Instrument Database Reference number: LI/NNE/2018/00003 THE SECRETARY OF STATE: 1. has on 29 December 2017 received a report from Northumbrian Water (the “Company”) dated 29 December 2017 (the “Report”) which states that there is or has been a significant risk of supplying water from multiple sites that could be unwholesome. 2. GIVES NOTICE to the Company under regulation 28(4) of the Water Supply (Water Quality) Regulations 2016 (as amended) that it must satisfy the following requirements: For risks associated with: - Manganese, iron and aluminium (related to mains sediment) - Discolouration Page 3 of 6 Requirements Date until/by which requirements must be maintained/ satisfied (as appropriate) (a) to maintain the following measures for the period specified: i. Optimisation of treatment for manganese, iron, Ongoing for the aluminium and organics removal at the water duration of the Notice treatment works. (all measures) ii. Optimisation of pH to manage the corrosive nature of the treated water. iii. Ongoing pipeline management of mains with flow and control operability. iv. Ongoing uni-directional flushing of DMAs, prioritised based on customer contacts. v. Appropriate risk based inspection and cleaning of the Company’s service reservoirs as set out in the Company’s discolouration strategy. vi. Adequate risk assessment planning, with appropriate sign-off, before completion of any planned work in order to consider and reduce the risk of customer impact. vii. Training of field operatives to facilitate more effective network operation and management and minimise disruption to customer supplies through the Company’s activities. (b) to review, revise and/or make operational the following measures, by the date specified below: i. Review the potential options to effectively mitigate 30 April 2021 the risk of discolouration with the zones referenced. ii. Implement the Company’s chosen solution, to TBC (dependent on effectively mitigate the risk of discolouration with the outcome of the zones referenced, as identified under measure measure (b)i.) (b)i. (c) to audit whether the measures have been effective by the following means: i. Define a strategy for auditing the effectiveness of 31 May 2021 the measures being delivered in section (b). This must include: ‐ The appropriate operation of water treatment works at all times; ‐ Ongoing monitoring of customer contacts for discolouration (brown, orange or black); Page 4 of 6 ‐ Monitoring of regulatory sample results for the zones supplied; and ‐ Monitoring of the number of DWI event based contacts. ii. Implement the audit strategy outlined in (c)i. above. Until revocation of this Notice (following the completion of (c)i above) (d) not to supply water for regulation 4(1) purposes from water treatment works or zones referenced: N/A (e) to provide the following information in the time and manner specified below to enable monitoring of progress towards the mitigation of the risk of supplying water that would constitute a potential danger to human health: i. Provide a progress report annually by 31 January and against the following milestones: a) Report to confirm details of the strategy for 30 June 2021 auditing the effectiveness of the measures being delivered in section (b) as specified in section (c). b) Outline of the review completed under 31 May 2021 measure (b)i., indicating the Company’s chosen solution and the timescale for completion of said solution. c) Interim progress reports on covering optimisation in a) and zonal work under b)i TBC at a frequency to be agreed. d) Confirmation of the completion of measure TBC (b)ii. ii. Review the risk assessment for the zones From time to time and referenced as required by regulation 27(4) and by two months after subsequently submit a revised regulation 28(1) the completion of all report accompanied by a signed board level measures in section declaration. (b) iii. Submit a satisfactory completion report TBC Page 5 of 6 Failure by the Company to comply with this Notice may result in enforcement proceedings under section 18 of the Act. Signed by authority of the Secretary of State Milo Purcell Deputy Chief Inspector 23 August 2019 DWI ref: LI/NNE/2018/00003 Page 6 of 6 .
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