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Northumbrian Water Limited – Hazard Review

Notice under regulation 28(4) of the Water Supply (Water Quality) Regulations 2016 (as amended)

Reference: NES-2026-00004

Version Number: 1

Water undertaker as appointed under section 6 of the Water Industry Act 1991 (as amended): Northumbrian Water Limited, with registered number 02366703 (hereinafter called ‘the company’).

Assets Affected:

Site

Reference

Wear Valley

T0015216

Dalton

T0700320

Fulwell

T0700324

New Winning

T0700337

Peterlee

T0700342

Thorpe

T0700347

Stoneygate

T0700345

Hawthorn

T0700327

Broken Scar

T0005067, T0005104

Fontburn

T0004769

Langham

T004

Chigwell

T001

Mosswood

T0021824, T0700335

Honey Hill

T0001706

Wooler

T0700393

Ormesby

T040

Warkworth

T0700349, T0700388

Hanningfield

T002

Lumley

T0700333

Lound

T038

Layer

T005

Rochester

T0700391

Syleham

T046

Gunnerton

T0700325

Otterburn

T0700389

Redgrave

T042

Benhall

T031

Holton

T037

Carrshields

T0700318

North Dalton

T0700338

Barsham

T030

Whittle Dene

T0700351

Bedingfield

T028

Walpole

T047

Byrness

T0700392

Tosson

T0004807

Allenheads

T0700315

Langford

T003

Broome

T032

Eye

T035

Murton

T0700390

Lartington

T0005166, T0010145, T0014493, T0014974

Parham

T041

Roding

T009

Coldfair Green

T034

Stifford

T007

Horsley

T0700330

Mendlesham

T039

Rickinghall

T048

Table 1: List of assets affected and associated reference numbers

Details of this Notice:

  1. The Drinking Water Inspectorate (‘the Inspectorate’) has received a regulation 28(1) report of the Water Supply (Water Quality) Regulations 2016 (as amended) (‘the Regulations’) from the company dated 6 July 2026, which states that there is or has been a significant risk of supplying water from named water treatment works (and associated assets as applicable) that could constitute a potential danger to human health or could be unwholesome.
  2. Consequently, this Notice is served on the company by the Inspectorate on behalf of the Secretary of State, under regulation 28(4) for the assets listed above, for risks associated with:

Description of Risk

Hazard/ Hazardous Event/ Parameter

Risks identified through HazRev Audit Programme

Coliform

Risks identified through HazRev Audit Programme

E.Coli

Risks identified through HazRev Audit Programme

Turbidity

Risks identified through HazRev Audit Programme

Cryptosporidium

Risks identified through HazRev Audit Programme

No Supply

Table 2: Table of the hazards, hazardous events, and/or parameters covered by this Notice, including the Hazard I D numbers and the description of risks.

  1. The company are required to satisfy the following requirements.

The date given is that until or by which the requirements must be maintained or satisfied, as appropriate.

Requirements:

(a) To maintain the following measures for the period specified in each case:

  1. Provide summary reports for completed sites and progress reports on actions completed to date, including any significant changes to delivery for sites not yet completed, for review at hazard review liaison meetings.
    Date: Ongoing for the duration of this Notice
  2. Maintain records of remedial works completed at all water treatment works.
    Date: Ongoing for the duration of this Notice
  3. Review the drinking water safety plan periodically to ensure current control measures remain in place and are appropriate to the risk.
    Date: Ongoing for the duration of this Notice
  4. Ensure that any newly identified risk is assessed in accordance with the drinking water safety plan methodology.
    Date: Ongoing for the duration of this Notice

(b) To review, revise or make operational the following measures, by the dates specified in each case:

  1. Complete a report for Wear Valley WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 September 2026
  2. Complete a report for Dalton WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 October 2026
  3. Complete a report for Fulwell WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 January 2027
  4. Complete a report for New Winning WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 June 2027
  5. Complete a report for Peterlee WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 July 2027
  6. Complete a report for Thorpe WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 November 2027
  7. Complete a report for Stoneygate WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 January 2028
  8. Complete a report for Hawthorn WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 May 2028
  9. Complete a report for Langham WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 December 2028
  10. Complete a report for Chigwell WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 January 2029
  11. Complete a report for Wooler WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 28 February 2029
  12. Complete a report for Ormesby WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 April 2029
  13. Complete a report for Lumley WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 August 2029
  14. Complete a report for Lound WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 September 2029
  15. Complete a report for Fontburn WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 28 February 2030
  16. Complete a report for Hanningfield WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 March 2030
  17. Complete a report for Warkworth WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 May 2030
  18. Complete a report for Mosswood WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 May 2030
  19. Complete a report for Honey Hill WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 July 2030
  20. Complete a report for Broken Scar WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 December 2030
  21. Complete a report for Syleham WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 January 2031
  22. Complete a report for Whittle Dene WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 28 February 2031
  23. Complete a report for Layer WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 March 2031
  24. Complete a report for Benhall WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 August 2031
  25. Complete a report for Holton WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 September 2031
  26. Complete a report for Rochester WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 November 2031
  27. Complete a report for North Dalton WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 November 2031
  28. Complete a report for Barsham WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 January 2032
  29. Complete a report for Gunnerton WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 March 2032
  30. Complete a report for Otterburn WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 May 2032
  31. Complete a report for Bedingfield WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 May 2032
  32. Complete a report for Redgrave WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 June 2032
  33. Complete a report for Carrshields WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 October 2032
  34. Complete a report for Lartington WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 November 2032
  35. Complete a report for Allenheads WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 March 2033
  36. Complete a report for Parham WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 June 2033
  37. Complete a report for Broome WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 August 2033
  38. Complete a report for Walpole WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 September 2033
  39. Complete a report for Byrness WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 November 2033
  40. Complete a report for Roding WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 November 2033
  41. Complete a report for Tosson WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 28 February 2034
  42. Complete a report for Langford WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 April 2034
  43. Complete a report for Eye WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 September 2034
  44. Complete a report for Coldfair Green WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 September 2034
  45. Complete a report for Murton WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 October 2034
  46. Complete a report for Stifford WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 30 November 2034
  47. Complete a report for Horsley WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 March 2035
  48. Complete a report for Mendlesham WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 March 2035
  49. Complete a report for Rickinghall WTW setting out the mitigated high and medium risk hazards and which low-risk hazards will remain unmitigated, how they will be recorded in the company’s Drinking Water Safety Plan, and who is responsible for each.
    Date: 31 March 2035

(c) To audit whether the measures have been effective by the following means:

  1. Define an audit strategy to monitor the effectiveness of the measures specified in sections (a) and (b).
    Date: 30 September 2026
  2. Implement, and keep under continuous review, the audit strategy defined in measure (c)1.
    Date: Following completion of measure (c)1. onwards.

(d) Not to supply water for regulation 4(1) purposes from company water treatment works or not to so supply unless the specified conditions below are satisfied:

  1. Not applicable.

(e) To provide the following information in the time and manner specified below to enable monitoring of progress towards the mitigation of the risks:

  1. Provide a progress report annually.
    Date: by 31 January each year.
  2. Submit completion reports for the sites specified in measures b(1), b(2) and b(3), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 January 2027
  3. Submit completion reports for the sites specified in measures b(4) and b(5), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 July 2027
  4. Submit completion reports for the sites specified in measures b(6) and b(7), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 January 2028
  5. Submit a completion report for the site specified in measure b(8), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 July 2028
  6. Submit completion reports for the sites specified in measures b(9) and b(10), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 January 2029
  7. Submit completion reports for the sites specified in measures b(11) and b(12), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 July 2029
  8. Submit completion reports for the sites specified in measures b(13) and b(14), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 January 2030
  9. Submit completion reports for the sites specified in measures b(15), b(16), b(17), b(18) and b(19), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 July 2030
  10. Submit completion reports for the sites specified in measures b(20) and b(21), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 January 2031
  11. Submit completion reports for the sites specified in measures b(22) and b(23), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 July 2031
  12. Submit completion reports for the sites specified in measures b(24), b(25), b(26), b(27) and b(28), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 January 2032
  13. Submit completion reports for the sites specified in measures b(29), b(30), b(31) and b(32), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 July 2032
  14. Submit completion reports for the sites specified in measures b(33) and b(34), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 January 2033
  15. Submit completion reports for the sites specified in measure b(35) and b(36), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 July 2033
  16. Submit completion reports for the sites specified in measure b(37), b(38), b(39) and b(40), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 January 2034
  17. Submit completion reports for the sites specified in measures b(41) and b(42), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 July 2034
  18. Submit completion reports for the sites specified in measures b(43), b(44), b(45) and b(46), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 January 2035
  19. Submit completion reports for the sites specified in measures b(47), b(48), and b(49), to include a concise summary and a graphical representation showing progression in the overall Hazard Review risk score.
    Date: 31 March 2035
  20. Submit the audit strategy for auditing the effectiveness of the measures, as specified in measure (c)1.
    Date: 31 October 2026
  21. Submit any revisions of the audit strategy produced under measure (c)2.
    Date: Within 1 month of a revision
  22. Submit a report in the event that any completed measures of this Notice need to be altered in any way, for any reason.
    Date: Ongoing for the duration of this Notice
  23. Submit a satisfactory completion report accompanied by a revised regulation 28(1) report with Board level Director sign-off.
    Date: 30 April 2036

Further Details of this Notice:

  1. Any product or substance used as a result of the requirements in this Notice must comply with regulation 31.
  2. Under regulation 28(6) the Inspectorate, on behalf of the Secretary of State, may by notice served on the company, revoke or vary this Notice.
  3. Failure by the company to comply with this Notice may result in enforcement proceedings under section 18 of the Water Industry Act 1991 (as amended).

Signed

 

Nicholas Adjei
Deputy Chief Inspector, on behalf of the Secretary of State for Environment, Food and Rural Affairs
23 July 2026
Reference: NES-2026-00004

Annex 1

 

Site

Date of Completion Report

1

Wear Valley

30 September 2026

2

Dalton

31 October 2026

3

Fulwell

31 January 2027

4

New Winning

30 June 2027

5

Peterlee

31 July 2027

6

Thorpe

30 November 2027

7

Stoneygate

31 January 2028

8

Hawthorn

31 May 2028

9

Broken Scar

31 December 2030

10

Fontburn

28 February 2030

11

Langham

31 December 2028

12

Chigwell

31 January 2029

13

Mosswood

31 May 2030

14

Honey Hill

31 July 2030

15

Wooler

28 February 2029

16

Ormesby

30 April 2029

17

Warkworth

31 May 2030

18

Hanningfield

31 March 2030

19

Lumley

31 August 2029

20

Lound

30 September 2029

21

Layer

31 March 2031

22

Rochester

30 November 2031

23

Syleham

31 January 2031

24

Gunnerton

31 March 2032

25

Otterburn

31 May 2032

26

Redgrave

30 June 2032

27

Benhall

31 August 2031

28

Holton

30 September 2031

29

Carrshields

31 October 2032

30

North Dalton

30 November 2031

31

Barsham

31 January 2032

32

Whittle Dene

28 February 2031

33

Bedingfield

31 May 2032

34

Walpole

30 September 2033

35

Byrness

30 November 2033

36

Tosson

28 February 2034

37

Allenheads

31 March 2033

38

Langford

30 April 2034

39

Broome

31 August 2033

40

Eye

30 September 2034

41

Murton

31 October 2034

42

Lartington

30 November 2032

43

Parham

30 June 2033

44

Roding

30 November 2033

45

Coldfair Green

30 September 2034

46

Stifford

30 November 2034

47

Horsley

31 March 2035

48

Mendlesham

31 March 2035

49

Rickinghall

31 March 2035

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