Private Water Supply Council Fees: How to Budget

What Regulation 21 allows councils to charge

In England, local authorities regulate private water supplies under the Private Water Supplies (England) Regulations 2016 as amended. Regulation 21 is the fees provision. It works with Schedule 5, which identifies the regulatory activities for which the authority can recover costs.

DWI's Regulation 21 information note, published in February 2025, is unusually important for budgeting because it clears up a common source of outdated advice: an English council is not simply choosing from a national price list. For a chargeable Schedule 5 activity, the authority may recover the actual cost it incurs. That cost-recovery principle is why two councils can publish very different-looking fee structures without either fee automatically being wrong.

Regulation 21 should therefore be treated as the legal framework for council cost recovery, not as a universal tariff. Your practical starting point is the environmental-health/private-water-supply fee page for the council that regulates the supply.

Why there is no England maximum-fee table now

Older copies of the 2016 Regulations and some council web pages still show or refer to maximum figures. That is potentially misleading if read without the 2018 amendment. DWI states that the Private Water Supplies (England) (Amendment) Regulations 2018 removed the maximum amounts that local authorities had previously been permitted to charge for Schedule 5 activities.

This also means a council page that still labels a figure as a “maximum” should be checked against the current DWI guidance rather than treated as overriding it. The council's invoice remains important for what you actually owe, but the national regulatory interpretation should come from the current Regulations and DWI guidance.

Chargeable activities and analytical costs

DWI lists four core purposes for which Regulation 21 costs may be recovered, with analytical costs separately constrained by Schedule 5. The distinction matters because “private water supply testing” is not one single fee.

DWI also says that if further samples are taken as part of an investigation, the relevant analysis cost must be included and recovered. That is different from a sample taken solely to confirm or clarify the previous result. The reason for the sample therefore matters to the charging position.

For analytical work, DWI's current note is also explicit that Schedule 5 cost recovery is limited. For example, it says Schedule 5 does not provide for recovery of analysis costs for parameters outside Parts 1 and 2 of Schedule 1, giving PFAS analysis as an example. This is another reason not to turn a laboratory quotation into a supposed national council fee.

Current council examples: evidence that fees really do vary

The following are local examples, checked 13 August 2026. They are not national rates and should not be used for a supply outside those authorities.

These examples illustrate DWI's point that charges vary with factors such as the authority's supply estate and geography. They are snapshots, not promises. Councils can update their fee schedules, laboratory contracts and officer rates, so record the date you obtained the figure.

Who pays and how shared costs can be apportioned

DWI says a person who requests a local authority to carry out a Schedule 5 activity is liable for the cost, and Regulation 21 fees are chargeable to the relevant person or persons. A “relevant person” can include people with ownership, management or control responsibilities for the supply, depending on the circumstances.

Where more than one person is liable, there is no single statutory percentage split in the private-water-supply Regulations. DWI says the local authority must have regard to any agreement or other document produced to it about the terms on which water is supplied and may apportion the charge between the relevant persons.

For a shared supply, write the cost-sharing arrangement down. Record whether routine regulatory costs, repairs, electricity, consumables and capital work use the same split or different agreed methods. Our shared-supply cost split calculator can model an equal or weighted split, but it does not determine the legal liability or bind the council.

There is also a special point for a supply serving a single dwelling. DWI says that where the council monitors such a supply because it suspects a potential risk to human health, it should only charge the owner or occupier for that monitoring if the owner or occupier requested it.

How supply type changes likely cost exposure

The Regulations classify supplies differently, and that affects the regulatory programme that ultimately creates fees.

Regulation 9: commercial, public or larger supplies

Regulation 9 includes commercial/public-use supplies irrespective of volume, and supplies using 10 m³ or more per day for domestic purposes. They require Group A and Group B monitoring at frequencies linked to volume, plus parameters identified by the risk assessment. DWI states that the minimum Group A/Group B monitoring frequency for Regulation 9 supplies is at least annual, subject to the detailed rules and permitted variation. For many businesses, this makes council/laboratory cost a genuinely recurring annual budget line.

Regulation 8: onward distribution

Regulation 8 applies to qualifying private distribution systems where water supplied by a water company is further distributed by another person. Monitoring is risk-assessment driven rather than simply copying the Regulation 9 Group A/B programme. Pipework, tanks, corrosion and distribution hazards can affect which parameters and visits are needed. Budget from the actual risk assessment and council programme.

Regulation 10: small shared non-commercial supplies

Regulation 10 covers small shared supplies below 10 m³/day with no commercial activity. DWI says these supplies generally have a five-year risk-assessment and monitoring cycle, with additional work where risk requires it. A supply to a single dwelling sits within a special subset with different routine-monitoring treatment. In practice, a Regulation 10 budget can be more irregular than a Regulation 9 business budget, so annualising known multi-year costs is useful.

If you are unsure which category you are dealing with, use the private-supply category helper as an orientation tool and then confirm the classification with the local authority. The tool does not make the statutory decision.

VAT: check the council's own schedule

Do not add a blanket “plus VAT” or “VAT exempt” rule to every Regulation 21 budget. DWI's Regulation 21 note explains cost recovery but does not set a universal VAT presentation for every local-authority invoice. Council fee schedules also vary in how they label VAT across environmental-health services.

The safe budgeting rule is simple: record the council's published figure exactly as described and confirm whether it is inclusive of VAT, exclusive of VAT or treated differently on the invoice. If VAT recovery matters to a business, use the actual tax invoice and your accountant's advice rather than assuming from a web-page headline.

Build a realistic annual private-water-supply budget

A useful budget has four layers rather than one vague “water testing” number.

For a five-year risk assessment, annualising the expected fee can make cash flow easier to understand. For example, if your current council estimate for a future risk assessment is £500, a planning reserve of £100 a year can make that known future item less disruptive. That is a cash-flow technique, not a prediction that the fee will still be £500 in five years.

Use the Private Water Supply Annual Cost Planner to enter your own council, laboratory, service, consumable and reserve figures. It deliberately does not invent a national council charge.

Costs Regulation 21 does not cap

Do not confuse the council's regulatory cost-recovery powers with the wider cost of owning a private water supply. A treatment contractor's call-out, replacement UV reactor, pump, filter media, electrical work, tank replacement, fencing, borehole work, bottled-water provision or capital upgrade is not turned into a Regulation 21 council fee merely because a risk assessment or failed sample led to the work.

Likewise, a commercial laboratory quote obtained privately is not automatically the amount recoverable by a council under Schedule 5. Regulatory analytical cost recovery has its own limits; private contractual work is priced under the contract you agree.

Reduce surprises without making false savings claims

There is no guaranteed trick for cutting a council fee. The authority is entitled to recover its actual cost for the specified activity. Good preparation can, however, make the regulatory process clearer and help you avoid creating extra work through missing information.

Before a planned risk-assessment visit, have the source-to-tap schematic, treatment details, previous assessments, sampling history, maintenance records, asset changes and contact details available. DWI notes that local authorities can limit risk-assessment cost by using relevant information from other stakeholders. Supplying organised, current records may make the assessment more efficient, but do not promise yourself a discount: the actual charge is the authority's decision within Regulation 21.

After every council invoice, record the activity, supply, date, amount, what laboratory work was included and whether the charge was shared. Over three to five years, your own history becomes a much better budgeting source than a generic national estimate.

England versus Wales, Scotland and Northern Ireland

This guide is for England. Do not apply its Regulation 21 numbering or its “no maximum cap” conclusion across the UK.

Wales has a separate Private Water Supplies (Wales) Regulations 2017 regime. DWI's current Wales fee note is Regulation 23, and unlike England it says Welsh local authorities may recover actual cost up to maximum amounts specified in Schedule 6. Scotland operates under separate Scottish private-water-supply legislation and local-authority arrangements. Northern Ireland has its own private-water-supply regulatory system overseen by the Northern Ireland Drinking Water Inspectorate.

If the supply is not in England, start with the relevant national regulator rather than translating England's fee rules.

Frequently asked questions

Related guidance and tools