- Made under
- Water (Northern Ireland) Order 1999
- Enforced by
- NIEA
- Status
- In Force
- Penalty ceiling
- Prosecution 1 of 29 obligations carry an unlimited fine. 28 have no criminal penalty — flagged in the list below.
Does it bind you?
Business-side roles with duties under this instrument.
Statutory Undertaker26
Any Person1
Plus 2 duties on the regulator, Crown ministers and public bodies — folded into the section list below.
Other Acts binding the same actors
If a role above is yours, these are the other instruments that most often bind it.
Statutory Undertaker — also bound by 195 other Acts
The Cory Decarbonisation Project Order 2025
120 duties
Water Industry Act 1991
53 duties
Any Person — also bound by 2684 other Acts
Human Medicines Regulations 2012
184 duties
Merchant Shipping Act 1995
144 duties
Insolvency (England and Wales) Rules 2016
104 duties
Communications Act 2003
92 duties
Road Traffic Act 1988
92 duties
What it requires
Regulations creating concrete business duties or carrying penalties, grouped as the instrument is structured. Titles link to the source text — blue means you’re leaving for legislation.gov.uk.
Part 1
GENERAL
0 of 3 sections shown3 other sections in this Part — procedural and definitional
s.001
Citation and commencement
s.002
Interpretation
s.003
Water Supplies to which these Regulations apply
Part 2
WATER SUPPLY ZONES
1 of 1 section shown
s.004
Water Supply Zones
Regulated
- Designate your water supply zones before each yearStatutory Undertaker
Part 3
WHOLESOMENESS
1 of 1 section shown
s.005
Wholesomeness
Regulated
- Supply wholesome water meeting quality standardsStatutory Undertaker
Part 4
MONITORING OF WATER SUPPLIES
6 of 7 sections shown
s.006
Monitoring Programmes
Regulated
- Monitor supplied water and review monitoring programme every 5 yearsStatutory Undertaker
s.008
Monitoring: general provisions
Regulated
- You must monitor water quality by sampling and analysing each supply zoneStatutory Undertaker
s.009
Sampling points
Regulated
- Choose water quality sampling points at randomStatutory Undertaker
s.010
Authorisation of supply points
Regulated
- Notify Department if alternative sampling point data would differ materiallyStatutory Undertaker
s.011
Number of samples
Regulated
- Take required number of water quality samples each yearStatutory Undertaker
s.012
Sampling: further provisions
Regulated
- Take water samples when you suspect the supply may be unwholesomeStatutory Undertaker
1 other section in this Part — procedural and definitional
s.007
Monitoring: Group A and Group B monitoring
Part 5
MONITORING – ADDITIONAL PROVISIONS
5 of 6 sections shown
s.014
Sampling for particular substances and parameters
Regulated
- Take and analyse water samples in each supply zoneStatutory Undertaker
s.015
Sampling at treatment works
Regulated
- Take and test water samples from each treatment works annuallyStatutory Undertaker
s.016
Sampling at service reservoirs
Regulated
- Sample service reservoirs weekly for water qualityStatutory Undertaker
s.017
Sampling: new sources
Regulated
- Sample new or restarted water sources before supplyStatutory Undertaker
s.018
Collection and analysis of samples
Regulated
- Collect and analyse water samples to the required standardsStatutory Undertaker
1 other section in this Part — procedural and definitional
s.013
Interpretation of Part 5
Part 6
DEVIATION FROM MONITORING REQUIREMENTS OF GROUP A AND GROUP B MONITORING
0 of 1 section shown1 other section in this Part — procedural and definitional
s.019
Deviation from standard parameters and frequencies
Part 7
DRINKING WATER ABSTRACTION POINTS
1 of 1 section shown
s.020
Drinking water abstraction points: monitoring sites
Regulated
- Monitor your water abstraction points and comply with sampling noticesStatutory Undertaker
Part 8
INVESTIGATIONS, AUTHORISATION OF DEPARTURES AND REMEDIAL ACTION
6 of 8 sections shown
s.021
Investigations: Schedule 1 parameters
Regulated
- Investigate water quality failures and notify the Department and affected consumersStatutory Undertaker
s.022
Investigations: indicator parameters
Regulated
- Investigate and report failures to meet water quality indicator parametersStatutory Undertaker
s.023
Action by the Department
Regulated
Other duties (1) — Crown / regulator
- Department must issue notice on serious water quality failuresCrown / Minister / Government department
s.025
Authorisations: terms and conditions
Regulated
Other duties (1) — Crown / regulator
- Department must set terms and conditions for water quality departure authorisationsCrown / Minister / Government department
s.027
Publicity for authorisations
Regulated
- Water undertaker must publicise authorised water quality departuresStatutory Undertaker
s.028
Revocation and modification of authorisations
Regulated
- Notify the Department when the circumstances for your authorised departure endStatutory Undertaker
2 other sections in this Part — procedural and definitional
s.024
Authorisation of temporary supply of water that is not wholesome
s.026
Authorisations: other limitations
Part 9
WATER TREATMENT
6 of 7 sections shown
s.029
Disinfection and other treatment arrangements
Regulated
- Disinfect and treat drinking water before you supply itStatutory Undertaker
s.030
Risk assessment
Regulated
- Carry out and keep up to date water supply risk assessmentsStatutory Undertaker
s.031
Procedure following risk assessment
Regulated
- Submit water risk assessment report to the DepartmentStatutory Undertaker
s.032
Contamination from pipes
Regulated
- You must treat water to reduce copper/lead contamination and replace lead pipes when requiredStatutory Undertaker
s.033
Application and introduction of substances and products
Regulated
- Only use permitted substances or products in water supplyStatutory Undertaker
s.035
Offences
Prosecution
- Use unauthorised substances or processes in water supplyAny Person
Unlimited fine
1 other section in this Part — procedural and definitional
s.034
Use of processes
Part 10
RECORDS AND INFORMATION
3 of 3 sections shown
s.036
Maintenance of records
Regulated
- Keep detailed records for each water supply zoneStatutory Undertaker
s.037
Provision of information
Regulated
- Provide water quality records on request and notify authorities of risksStatutory Undertaker
s.038
Publication of Information
Regulated
- Publish annual drinking water quality report and send copies to district councilsStatutory Undertaker
Part 11
REVOCATIONS
0 of 1 section shown1 other section in this Part — procedural and definitional
s.039
Revocations
Part 12
TRANSITIONAL PROVISIONS
0 of 1 section shown1 other section in this Part — procedural and definitional
s.040
Transitional Provisions
Schedules
Schedules
0 of 5 shown5 other schedules
s.sch003
(1) A monitoring programme established under Part 4 of these...
s.sch005
A water undertaker may use a screening strategy for gross...
s.sch005
Calculation of the ID The ID must be calculated from...
s.sch005
Performance characteristics and method of analysis. For the following parameters...
s.sch006
Revocations coming into operation on the 27th October 2017 No....
Help complying
Guvnor’s practical routes through this instrument.
1 more guide that reference this instrument
Connected legislation
The wider family of instruments made under the same parent Act.
Nitrates Action Programme Regulations (Northern Ireland) 2014
SI 2014
Northern Ireland Statutory Rule
Quality of Bathing Water Regulations (Northern Ireland) 2008
SI 2008
Northern Ireland Statutory Rule
Water Abstraction and Impoundment (Licensing) Regulations (Northern Ireland) 2006
SI 2006
Northern Ireland Statutory Rule
Water Environment (Water Framework Directive) Regulations (Northern Ireland) 2017
SI 2017
Northern Ireland Statutory Rule
Duty extraction and severity labels are Guvnor’s analysis of the instrument, not the instrument itself. Always verify against the linked source text.