Use CCW official calculator
Use this page as a quick pass, then use the Consumer Council for Water calculator with your water company details.
Water savings are not only meters
Ask about social tariffs
CCW says every water company has a social tariff scheme for low-income customers, but rules vary by company.
Check WaterSure
WaterSure can cap bills for some metered households on income-related benefits with high essential water use.
Sources and useful links
Worked examples — see the math on real numbers
How UK water meter switching compares to rateable value charges — and when it's worth doing.
Family of 4 in older Victorian terrace
| Current rateable value charge | £540/year |
| Household occupants | 4 (2 adults, 2 children) |
| Estimated daily usage | ~140 litres per person = 560L/day = 204,400L/year |
| Water + sewerage rate (post-meter) | ~£1.80 per cubic metre |
The math:
- Metered cost: 204.4 m³ × £1.80 = £368
- Plus standing charge: ~£90
- Total metered cost: ~£458/year
- Saving vs rateable value: £540 − £458 = £82/year
- Meter installation: free (legal right)
- Trial period: 12-24 months — can revert if it costs more
Result: Even a 4-person household saves £82/year on a meter in this scenario — and they can revert within 12-24 months if usage proves higher than estimated. Larger families (5+) often pay MORE on a meter; smaller households (1-2 people) almost always save.
Single occupant in 4-bed family home
| Current rateable value charge | £610/year (high RV due to property size) |
| Occupants | 1 |
| Daily usage | ~120 litres = 43,800L/year |
The math:
- Metered cost: 43.8 m³ × £1.80 = £79
- Plus standing charge: ~£90
- Total metered cost: ~£169/year
- Saving: £610 − £169 = £441/year
- Big house, small household — the classic meter-saves scenario
Result: Single occupant in a higher-rateable-value property saves £441/year — about 72% off the bill. The Consumer Council for Water recommends a meter for any household where occupants are fewer than the number of bedrooms.
Figures use 2026/27 UK tax-year rates and thresholds. Always verify against your specific payslip or tax statement before acting.
Editorial accountability
Open Trust Centre →
How UK Tax Drag holds itself to account
Every page is reviewed against the editorial standards, written from primary sources, sourced openly, and corrected publicly. No affiliate revenue. No sponsored content. No paid placements.