BREEAM Wat 02 — Water Monitoring
How BREEAM Wat 02 (water monitoring) is assessed, the evidence your assessor needs and how to secure the credits early. Fixed-fee UK assessors, same-day reply.
BREEAM Wat 02: water monitoring
Wat 02 rewards a water meter on the mains supply plus sub-meters on large water-using areas or plant, connected to the building management system so consumption can be tracked and leaks spotted.
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What Wat 02 assesses and the evidence needed
| Requirement | Typical evidence |
|---|---|
| Mains water meter with pulsed output | Specification and meter schedule |
| Sub-metering of high-use areas or plant | Metering strategy drawing |
| Connection to a BMS where one is installed | BMS points list or commissioning record |
Exact criteria and credit numbers depend on the scheme and manual version your project is registered under. Your assessor confirms them at pre-assessment.
How to secure Wat 02 without extra cost
- Agree the target at pre-assessment, before RIBA Stage 2.
- Give the responsible designer or contractor a clear evidence list.
- Check the evidence at design stage so nothing is lost at post-construction review.
Related guides
Frequently Asked Questions
What is BREEAM Wat 02?
The water monitoring credit, which rewards metering of the mains supply and major water uses so building managers can track consumption.
When should Wat 02 be planned?
At developed design, when the public health engineer sets the metering strategy, so meters are in the specification before tender.
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