The Private Water Supplies Regulations 2009

Type Statutory-Instrument
Publication 2009-11-24
Last updated 2016-06-27
State In force
Department King's Printer of Acts of Parliament
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Made: 24th November 2009

Laid before Parliament: 30th November 2009

Coming into force: 1st January 2010

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PART 1 — Water standards

Citation, application and commencement

1

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Scope

2

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Exemptions

3

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Wholesomeness

4

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Use of products or substances in private supplies

5

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Requirement to carry out a risk assessment

6

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PART 2 — Monitoring

Monitoring

7

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Further distribution of supplies from water undertakers or licensed water suppliers

8

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Large supplies and supplies to commercial or public premises

9

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Other private supplies

10

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Sampling and analysis

11

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Maintenance of records

12

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Notification of information

13

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PART 3 — Action in the event of failure

Provision of information

14

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Investigation

15

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Procedure following investigation

16

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Authorisations of different standards

17

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PART 4 — Notice procedure

Notices

18

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Appeals

19

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Penalties

20

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PART 5 — Miscellaneous

Fees

21

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Revocation

22

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SCHEDULE 1 — Concentrations or Values

PART 1 — Wholesomeness

Parameters Maximum concentration or value Units of Measurement
Escherichia coli (E. coli) 0 Number/100ml
Enterococci 0 Number/100ml
In the case of water in bottles or containers: In the case of water in bottles or containers:
Escherichia coli (E. coli) 0 Number/250ml
Enterococci 0 Number/250ml
Pseudomonas aeruginosa 0 Number/250ml
Colony count 22°C 100 Number/ml
Colony count 37°C 20 Number/ml
¹ The parametric value refers to the residual monomer concentration in the water as calculated according to specifications of the maximum release from the corresponding polymer in contact with the water. This is controlled by product specification. ¹ The parametric value refers to the residual monomer concentration in the water as calculated according to specifications of the maximum release from the corresponding polymer in contact with the water. This is controlled by product specification. ¹ The parametric value refers to the residual monomer concentration in the water as calculated according to specifications of the maximum release from the corresponding polymer in contact with the water. This is controlled by product specification.
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² See also the nitrate-nitrite formula in regulation 4(c). ² See also the nitrate-nitrite formula in regulation 4(c). ² See also the nitrate-nitrite formula in regulation 4(c).
³ For these purposes “Pesticides” means— ³ For these purposes “Pesticides” means— ³ For these purposes “Pesticides” means—
organic insecticides organic insecticides organic insecticides
organic herbicides organic herbicides organic herbicides
organic fungicides organic fungicides organic fungicides
organic nematocides organic nematocides organic nematocides
organic acaricides organic acaricides organic acaricides
organic algicides organic algicides organic algicides
organic rodenticides organic rodenticides organic rodenticides
organic slimicides organic slimicides organic slimicides
related products (inter alia, growth regulators) related products (inter alia, growth regulators) related products (inter alia, growth regulators)
and their relevant metabolites, degradation and reaction products. and their relevant metabolites, degradation and reaction products. and their relevant metabolites, degradation and reaction products.
Only those pesticides likely to be present in a given supply need be monitored. Only those pesticides likely to be present in a given supply need be monitored. Only those pesticides likely to be present in a given supply need be monitored.
⁴ “Pesticides total” means the sum of the concentrations of the individual pesticides detected and quantified in the monitoring process. ⁴ “Pesticides total” means the sum of the concentrations of the individual pesticides detected and quantified in the monitoring process. ⁴ “Pesticides total” means the sum of the concentrations of the individual pesticides detected and quantified in the monitoring process.
⁵ The specified compounds are: ⁵ The specified compounds are: ⁵ The specified compounds are:
benzo(b)fluoranthene benzo(b)fluoranthene benzo(b)fluoranthene
benzo(k)fluoranthene benzo(k)fluoranthene benzo(k)fluoranthene
benzo(ghi)perylene benzo(ghi)perylene benzo(ghi)perylene
indeno(1,2,3-cd)pyrene. indeno(1,2,3-cd)pyrene. indeno(1,2,3-cd)pyrene.
The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.
⁶ The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. ⁶ The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. ⁶ The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.
⁷ The specified compounds are: ⁷ The specified compounds are: ⁷ The specified compounds are:
chloroform chloroform chloroform
bromoform bromoform bromoform
dibromochloromethane dibromochloromethane dibromochloromethane
bromodichloromethane. bromodichloromethane. bromodichloromethane.
The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.
Parameters Parameters Parameters
Parameters Parameters Maximum concentration or value
Acrylamide ¹ Acrylamide ¹ Acrylamide ¹
Antimony Antimony Antimony
Arsenic Arsenic Arsenic
Benzene Benzene Benzene
Benzo(a)pyrene Benzo(a)pyrene Benzo(a)pyrene
Boron Boron Boron
Bromate Bromate Bromate
Cadmium Cadmium Cadmium
Chromium Chromium Chromium
Copper Copper Copper
Cyanide Cyanide Cyanide
1, 2 dichloroethane 1, 2 dichloroethane 1, 2 dichloroethane
Epichlorohydrin ¹ Epichlorohydrin ¹ Epichlorohydrin ¹
Fluoride Fluoride Fluoride
Lead Lead Lead
Lead Lead Lead
Mercury Mercury Mercury
Nickel Nickel Nickel
Nitrate ² Nitrate ² Nitrate ²
Nitrite² Nitrite² Nitrite²
Pesticides ³ Pesticides ³ Pesticides ³
Aldrin Aldrin
Dieldrin Dieldrin
Heptachlor Heptachlor
Heptachlor epoxide Heptachlor epoxide
other pesticides other pesticides
Pesticides total ⁴ Pesticides total ⁴
Polycyclic aromatic hydrocarbons ⁵ Polycyclic aromatic hydrocarbons ⁵ Polycyclic aromatic hydrocarbons ⁵
Selenium Selenium Selenium
Tetrachloroethene and Trichloroethene ⁶ Tetrachloroethene and Trichloroethene ⁶ Tetrachloroethene and Trichloroethene ⁶
Trihalomethanes: Total ⁷ Trihalomethanes: Total ⁷ Trihalomethanes: Total ⁷
Vinyl chloride ¹ Vinyl chloride ¹ Vinyl chloride ¹
National requirements – Prescribed concentrations or values National requirements – Prescribed concentrations or values National requirements – Prescribed concentrations or values
Aluminium Aluminium 200
Colour Colour 20
Iron Iron 200
Manganese Manganese 50
Odour Odour Acceptable to consumers and no abnormal change
Sodium Sodium 200
Taste Taste Acceptable to consumers and no abnormal change
Tetrachloromethane Tetrachloromethane 3
Turbidity Turbidity 4

PART 2 — Indicator Parameters

Parameters Parameters Maximum concentration or value or state (unless otherwise stated) Units of measurement Units of measurement
(i) The water should not be aggressive. (i) The water should not be aggressive. (i) The water should not be aggressive. (i) The water should not be aggressive. (i) The water should not be aggressive.
(ii) Excluding tritium, potassium-40, radon and radon decay products. (ii) Excluding tritium, potassium-40, radon and radon decay products. (ii) Excluding tritium, potassium-40, radon and radon decay products. (ii) Excluding tritium, potassium-40, radon and radon decay products. (ii) Excluding tritium, potassium-40, radon and radon decay products.
(iii) Only in the case of surface water or groundwater that has been influenced by surface water. (iii) Only in the case of surface water or groundwater that has been influenced by surface water. (iii) Only in the case of surface water or groundwater that has been influenced by surface water. (iii) Only in the case of surface water or groundwater that has been influenced by surface water. (iii) Only in the case of surface water or groundwater that has been influenced by surface water.
Ammonium Ammonium 0.50 mg/l mg/l
Chloride [^f01028] Chloride [^f01028] 250 mg/l mg/l
Clostridium perfringens (including spores) Clostridium perfringens (including spores) 0 Number/100ml Number/100ml
Coliform bacteria Coliform bacteria 0 Number/100ml (Number/250 ml in the case of water put into bottles or containers) Number/100ml (Number/250 ml in the case of water put into bottles or containers)
Colony counts Colony counts No abnormal change No abnormal change Number/ml at 22°C Number/ml at 37°C Number/ml at 22°C Number/ml at 37°C
Conductivity [^f01028] Conductivity [^f01028] 2500 μS/cm at 20°C μS/cm at 20°C
Hydrogen ion Hydrogen ion 9.5 (maximum) pH value pH value
6.5 (minimum) (in the case of still water put into bottles or containers the minimum is 4.5) pH value pH value
Sulphate [^f01028] Sulphate [^f01028] 250 mg/l mg/l
Total indicative dose (for radioactivity) [^f01029] 0.10 0.10 mSv/year
Total organic carbon (TOC) No abnormal change No abnormal change mgC/l
Tritium (for radioactivity) 100 100 Bq/l
Turbidity[^f01030] 1 1 NTU

SCHEDULE 2 — Monitoring

PART 1 — Check monitoring

Sampling

1

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Frequency of sampling

2

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PART 2 — Audit monitoring

Sampling

3

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Frequency of sampling

4

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PART 3 — Minimum frequency for both check monitoring and audit monitoring for water put into bottles or containers

¹ The volumes are calculated as averages taken over a calendar year. ¹ The volumes are calculated as averages taken over a calendar year. ¹ The volumes are calculated as averages taken over a calendar year.
Volume ¹ of water produced in bottles or containers each day (m³) Check monitoring number of samples per year Audit monitoring number of samples per year
≤10 1 1
>10≤ 60 12 1
>60 1 for each 5 m³/day of the total volume (rounding up to the nearest multiple of 5 m³/day) 1 for each 100 m³/day of the total volume (rounding up to the nearest multiple of 100 m³/day)

SCHEDULE 3 — Sampling and analysis

PART 1 — General

Samples: general

1

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Analysing samples

2

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Authorisation of alternative methods of analysis

3

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Sampling and analysis by persons other than local authorities

4

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PART 2 — Analytical methods

Parameter Method
* Use the following method to make m-CP agar: Make a basal medium consisting of— Tryptose30.0gYeast extract20.0gSucrose5.0gL-cysteine hydrochloride1.0gMgSO₄.7H₂O0.1gBromocresol purple40.0mgAgar15.0gWater1,000.0ml Dissolve the ingredients of the basal medium, adjust pH to 7.6 and autoclave at 121°C for 15 minutes. Allow the medium to cool. Dissolve— D-cycloserine400.0mgPolymyxine-B sulphate25.0mgIndoxyl-β-D-glucoside60.0mg into 8ml sterile water and add it to the medium. Add to the medium— Filter-sterilised 0.5% phenolphthalein diphosphate solution20.0mlFilter-sterilised 4.5% FeCl₃.6H₂O2.0ml * Use the following method to make m-CP agar: Make a basal medium consisting of— Tryptose30.0gYeast extract20.0gSucrose5.0gL-cysteine hydrochloride1.0gMgSO₄.7H₂O0.1gBromocresol purple40.0mgAgar15.0gWater1,000.0ml Dissolve the ingredients of the basal medium, adjust pH to 7.6 and autoclave at 121°C for 15 minutes. Allow the medium to cool. Dissolve— D-cycloserine400.0mgPolymyxine-B sulphate25.0mgIndoxyl-β-D-glucoside60.0mg into 8ml sterile water and add it to the medium. Add to the medium— Filter-sterilised 0.5% phenolphthalein diphosphate solution20.0mlFilter-sterilised 4.5% FeCl₃.6H₂O2.0ml
Tryptose 30.0g
Yeast extract 20.0g
Sucrose 5.0g
L-cysteine hydrochloride 1.0g
MgSO₄.7H₂O 0.1g
Bromocresol purple 40.0mg
Agar 15.0g
Water 1,000.0ml
D-cycloserine 400.0mg
Polymyxine-B sulphate 25.0mg
Indoxyl-β-D-glucoside 60.0mg
Filter-sterilised 0.5% phenolphthalein diphosphate solution 20.0ml
Filter-sterilised 4.5% FeCl₃.6H₂O 2.0ml
Clostridium perfringens (including spores) Membrane filtration followed by anaerobic incubation of the membrane on m-CP agar[^f01003] at 44 ± 1°C for 21 ± 3 hours. Count opaque yellow colonies that turn pink or red after exposure to ammonium hydroxide vapours for 20 to 30 seconds.
Coliform bacteria BS-EN ISO 9308-1
Colony count 22°C-enumeration of culturable microorganisms BS-EN ISO 6222
Colony count 37°C-enumeration of culturable microorganisms BS-EN ISO 6222
Enterococci BS-EN ISO 7899-2
Escherichia coli (E. coli) BS-EN ISO 9308-1
Pseudomonas aeruginosa BS-EN ISO 12780
Parameters Trueness % of prescribed concentration or value or specification
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Notes: Notes:
(i) The method of analysis should determine total cyanide in all forms. (i) The method of analysis should determine total cyanide in all forms.
(ii) The performance characteristics apply to each individual pesticide and will depend on the pesticide concerned. (ii) The performance characteristics apply to each individual pesticide and will depend on the pesticide concerned.
(iii) The performance characteristics apply to the individual substances specified at 25% of the parametric value in Part 1 of Table B in Schedule 1. (iii) The performance characteristics apply to the individual substances specified at 25% of the parametric value in Part 1 of Table B in Schedule 1.
(iv) The performance characteristics apply to the individual substances specified at 50% of the parametric value in Part 1 of Table B in Schedule 1. (iv) The performance characteristics apply to the individual substances specified at 50% of the parametric value in Part 1 of Table B in Schedule 1.
(v) The performance characteristics apply to the prescribed value of 4 NTU. (v) The performance characteristics apply to the prescribed value of 4 NTU.
(vi) The performance characteristics apply to the specification of 1 NTU for surface waters or ground waters influenced by surface water. (vi) The performance characteristics apply to the specification of 1 NTU for surface waters or ground waters influenced by surface water.
Aluminium 10
Ammonium 10
Antimony 25
Arsenic 10
Benzene 25
Benzo(a)pyrene 25
Boron 10
Bromate 25
Cadmium 10
Chloride 10
Chromium 10
Colour 10
Conductivity 10
Copper 10
Cyanide [^f01034] 10
1,2-dichloroethane 25
Fluoride 10
Iron 10
Lead 10
Manganese 10
Mercury 20
Nickel 10
Nitrate 10
Nitrite 10
Pesticides and related products [^f01035] 25
Polycyclic aromatic hydrocarbons [^f01036] 25
Selenium 10
Sodium 10
Sulphate 10
Tetrachloroethene [^f01037] 25
Tetrachloromethane 20
Trichloroethene [^f01037] 25
Trihalomethanes: Total [^f01036] 25
Turbidity [^f01038] 10
Turbidity [^f01039] 25

SCHEDULE 4 — Records

Initial records

1

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Additional records

2

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SCHEDULE 5 — Fees

Fee

1

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Persons liable to pay

2

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Signed

Huw Irranca-Davies — Parliamentary Under Secretary of State — 2009-11-24

Explanatory note

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Footnotes

[^f00001]: OJ No L 31, 1.2.2002, p 1.

[^f00002]: 1991 c. 56.

[^f00003]: 1972 c. 68.

[^f00004]: S. I. 1972/1811.

[^f00005]: S. I. 2007/2785.

[^f00006]: S. I. 2000/3184 as last amended by S. I. 2007/2734.

[^f00007]: 1991 c. 56.

[^f00008]: 1980 c.43; sections 51 and 52 have been substituted by the Courts Act 2003 (c.39), section 47.

[^f00009]: S. I. 1991/2790.

Make a basal medium consisting of—

Tryptose 30.0g
Yeast extract 20.0g
Sucrose 5.0g
L-cysteine hydrochloride 1.0g
MgSO₄.7H₂O 0.1g
Bromocresol purple 40.0mg
Agar 15.0g
Water 1,000.0ml

Dissolve the ingredients of the basal medium, adjust pH to 7.6 and autoclave at 121°C for 15 minutes. Allow the medium to cool.

Dissolve—

D-cycloserine 400.0mg
Polymyxine-B sulphate 25.0mg
Indoxyl-β-D-glucoside 60.0mg

into 8ml sterile water and add it to the medium.

Add to the medium—

Filter-sterilised 0.5% phenolphthalein diphosphate solution 20.0ml
Filter-sterilised 4.5% FeCl₃.6H₂O 2.0ml
Notes: Notes:
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¹ The method of analysis should determine total cyanide in all forms. ¹ The method of analysis should determine total cyanide in all forms.
² The performance characteristics apply to each individual pesticide and will depend on the pesticide concerned. ² The performance characteristics apply to each individual pesticide and will depend on the pesticide concerned.
³ The performance characteristics apply to the individual substances specified at 25% of the parametric value in Part 1 of Table B in Schedule 1. ³ The performance characteristics apply to the individual substances specified at 25% of the parametric value in Part 1 of Table B in Schedule 1.
⁴ The performance characteristics apply to the individual substances specified at 50% of the parametric value in Part 1 of Table B in Schedule 1. ⁴ The performance characteristics apply to the individual substances specified at 50% of the parametric value in Part 1 of Table B in Schedule 1.
⁵ The performance characteristics apply to the prescribed value of 4 NTU. ⁵ The performance characteristics apply to the prescribed value of 4 NTU.
⁶ The performance characteristics apply to the specification of 1 NTU for surface waters or ground waters influenced by surface water. ⁶ The performance characteristics apply to the specification of 1 NTU for surface waters or ground waters influenced by surface water.
Parameters Trueness % of prescribed concentration or value or specification
Aluminium 10
Ammonium 10
Antimony 25
Arsenic 10
Benzene 25
Benzo(a)pyrene 25
Boron 10
Bromate 25
Cadmium 10
Chloride 10
Chromium 10
Colour 10
Conductivity 10
Copper 10
Cyanide ¹ 10
1,2-dichloroethane 25
Fluoride 10
Iron 10
Lead 10
Manganese 10
Mercury 20
Nickel 10
Nitrate 10
Nitrite 10
Pesticides and related products ² 25
Polycyclic aromatic hydrocarbons ³ 25
Selenium 10
Sodium 10
Sulphate 10
Tetrachloroethene ⁴ 25
Tetrachloromethane 20
Trichloroethene ⁴ 25
Trihalomethanes:Total ³ 25
Turbidity ⁵ 10
Turbidity ⁶ 25

Editorial notes

[^key-d1c0dcf5a355b030c555a32b450287e7]: Regulations revoked (27.6.2016) by The Private Water Supplies (England) Regulations 2016 (S.I. 2016/618), regs. 1(1), 23(1) (with reg. 3)

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