Compare metered vs unmetered water bills. Find out which saves you money. Average household saves £54/year with water meter. FREE installation with 2-year trial period.
Compare what you'd pay with water meter vs unmetered rateable value charging:
In England and Wales, water companies use two different methods to calculate household bills:
| Billing Method | How It Works | Who Has It | Average Bill |
|---|---|---|---|
| Water Meter (Metered) | Pay for exact amount of water used measured in cubic meters (m³). Standing charge + volumetric charge per m³. | 57% of UK households (growing) | £379/year (2025-26) |
| Rateable Value (Unmetered) | Fixed bill based on property's 1990 rateable value (size/location). Water usage irrelevant - pay same regardless of consumption. | 43% of UK households (declining) | £433/year (2025-26) |
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Water meter is a device installed on your property's water supply pipe that measures exactly how much water flows through in cubic meters (m³):
Rateable Value (RV) is an old system based on 1990 property valuations frozen by government in March 1990:
The simplest rule of thumb: water meter usually cheaper if there are fewer people living in your home than bedrooms.
| Household | Metered Cost | Unmetered Cost | Annual Saving |
|---|---|---|---|
| Single person, 3-bed semi, £250 RV | £155 (50 m³) | £580 | SAVES £425/year! |
| Couple, 4-bed detached, £350 RV | £280 (100 m³) | £800 | SAVES £520/year! |
| 2 people, 2-bed flat, £100 RV | £280 (100 m³) | £250 | COSTS £30/year more |
| Family of 4, 3-bed semi, £180 RV | £530 (200 m³) | £425 | COSTS £105/year more |
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Unmetered rateable value billing often cheaper for larger households in smaller/lower-value properties:
Important: If you need water meter for other reasons (leak detection, conscious usage) BUT have medical high-usage needs, apply for WaterSure scheme - caps metered bills at average unmetered rate for area (~£420-600/year) protecting you from excessive charges. Eligibility: receive benefits (Universal Credit, Pension Credit, etc.) + either 3+ children OR medical condition requiring high water usage. Apply through water company - FREE protection!
UK law requires water companies to offer 2-year trial period for meter installations:
Water meters display cumulative total water passed through in cubic meters (m³):
If you don't submit meter reading before bill date, water company estimates usage based on previous year - can be 20-30% inaccurate! Submit readings every 6 months (before April bill and October bill) to ensure accurate charging.
| Household Size | Daily Usage | Annual Usage (m³) | Typical Annual Cost (Metered) |
|---|---|---|---|
| 1 person | 135 liters | 50 m³ | £150-180 |
| 2 people (couple) | 270 liters | 100 m³ | £275-320 |
| 3 people | 405 liters | 150 m³ | £400-465 |
| 4 people (family) | 540 liters | 200 m³ | £525-610 |
| 5 people | 675 liters | 250 m³ | £650-755 |
| 6+ people | 810+ liters | 300+ m³ | £775-900+ |
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Studies show households reduce water consumption 9-20% after meter installation as they become conscious of usage - here's how to maximize savings:
Implementing all 10 tips above: family of 4 using 200 m³/year reduces to 140 m³ = £150 water bill saving + £250 energy saving (less hot water heating) = £400/year saved! Plus £135 avoiding bath vs shower = £535 total. Effort required: minimal - mostly one-time fixes or simple habit changes!
Yes, but only within 2 years. UK law requires water companies to allow switching back to unmetered rateable value billing FREE within 24 months of meter installation. After 24 months, meter is permanent and you CANNOT switch back. If you realize meter is costing more, act quickly within trial period!
Yes, meter stays with property. Water meter is physically installed on property's supply pipe - when you sell/move, meter remains for next occupant. New owner cannot remove meter (it's permanent infrastructure). However, if YOU move to different property, you start fresh - can choose metered or unmetered at new address (if new address currently unmetered, you could request meter there too).
No - rates vary significantly by company and region. Average metered rate £2.50/m³ but ranges from £1.80/m³ (South Staffs) to £5.20/m³ (South West Water). Unmetered RV multiplier ranges £1.40 to £4.50. Use calculator above with your specific water company for accurate comparison. Generally, meter more beneficial in cheaper regions (Midlands, North) vs expensive regions (South West, Thames) where high volumetric rates mean large families pay more.
No, meter cannot be physically removed. Within 2-year trial you can switch billing method back to unmetered rateable value, but physical meter remains installed (it stays on pipe). You just get billed as if you didn't have meter - rateable value charging resumes. Meter stays inactive/ignored for billing purposes.
Water company responsible for maintenance and replacement FREE. If meter breaks, stops recording, or displays errors, contact water company immediately. They'll send engineer to inspect/replace FREE (you don't pay for meter maintenance). While broken, they'll estimate your usage based on previous year's average and adjust bill once meter fixed. Not your responsibility or cost!
Yes, increasingly available but not yet universal. Smart water meters automatically send readings to water company (like smart energy meters) - you don't need to submit readings. Some companies (Thames, Anglian, Southern) trialing smart meters in new builds and select areas. Benefits: automatic accurate bills, leak alerts sent to your phone (sudden usage spike), hourly usage tracking via app. FREE like standard meters where available. Ask your water company if smart meters offered in your area.
Temporary shut-off 30-90 minutes during installation. Plumber needs to cut into supply pipe to install meter - requires turning off water supply for 30-90 minutes. You'll be notified in advance (usually 2 weeks notice). Fill kettle/bottles/bath beforehand for temporary water during installation. No long-term disruption - water pressure and flow identical after installation. If outdoor meter installation, you don't even need to be home (they access from street/boundary).
Two UK billing methods: Water meter pay exact usage measured cubic meters (m³) standing charge + volumetric charge per m³ = £379/year average 2025-26 57% households. Rateable Value unmetered fixed bill based property's 1990 RV size/location frozen values cannot change = £433/year average 43% households declining. Golden rule: meter saves if fewer people than bedrooms (1-2 people 3-bed house), unmetered cheaper more people than bedrooms (5 people 2-bed flat). Average metered household saves £54/year vs unmetered but varies HUGELY by household size, RV, usage habits.
Meter saves money scenarios: Single person 2+ bed RV £200+ SAVES £200-400/year meter vs unmetered. Couple 3+ bed high RV £250+ SAVES £100-350/year. Water-conscious short showers full loads no garden watering 40-70 m³/year low usage SAVES £100-200. Work away frequently empty property SAVES £200-300. Retired couple downsizing 4-bed SAVES £200-400. Rule: if RV £250+ meter usually cheaper even 3-4 people. Average savings: single £425/year, couple large house £520/year proven examples.
Unmetered cheaper scenarios: Large family 4+ people low RV £120 terraced SAVES £150-300/year staying unmetered vs meter 200+ m³ usage. More people than bedrooms 5 in 2-bed SAVES £300 unmetered low RV vs metered 250 m³. High usage habits daily baths not showers washing 10+ loads/week garden watering 250-350 m³ meter costs £100-250 MORE. Medical needs dialysis skin conditions multiple showers 350+ m³ meter could cost £300-500 MORE (but WaterSure caps bills protect). Low RV under £100 small flat North/Wales unmetered £200-300 hard beat. Pool/hot tub filling 10 m³ + top-ups meter adds £100-200/year. Large garden hosepipe 50-100 m³ summer meter adds £125-400.
FREE meter installation process: Contact water company apply online/phone 100% FREE installation legally required. Survey arranged within 2 weeks assess feasibility 95%+ properties suitable. Installation scheduled within 3 months typically 4-8 weeks plumber installs 2-3 hours temporary shut-off 30-60 min. Billing switches metered immediately next bill shows readings. Total cost £0 completely FREE! Reasons refused: shared supply neighbors, no access, disproportionate cost £5k+ road digging under 5% cases. Alternative: assessed charge estimated usage between metered/unmetered saves 10-20%.
2-year trial ZERO RISK: 24 months from installation date switch back FREE anytime within trial no questions asked. Some companies refund difference if metered higher (varies ask when requesting). After 24 months permanent cannot switch back meter stays but billing reverts if you acted within trial. Why try: zero risk monitor bills 2 years decide. Most keep meters 65-70% retention rate satisfied. Meter physical device stays property moves with house new owner inherits cannot remove permanent infrastructure.
Reading meter: Locate basement utility cupboard outdoor boundary box "Water Meter" label. Open cover lift plastic/metal may need screwdriver. Read black numbers cubic meters (m³) ignore red decimals not needed. Example "00512.345" = 512 m³ total. Submit reading online app SMS phone BEFORE bill date avoid 20-30% inaccurate estimates. Calculation: previous 500 m³, current 512 m³, used 12 m³ period × £2.50 = £30 usage + £25 standing = £55 bill. Typical usage: single 50 m³/year £150-180, couple 100 m³ £275-320, family 4 people 200 m³ £525-610, 6+ people 300+ m³ £775-900+.
Water-saving tips metered households: Studies show 9-20% usage reduction after meter installed conscious behaviors. Top 10 tips: (1) Showers not baths 5-min 35L vs 80L bath SAVES £80/year family switching. (2) Turn off tap brushing teeth wastes 6L/day SAVES £40. (3) Full loads dishwasher/washing SAVES £30. (4) Fix dripping taps 1 drop/sec = 5.4 m³/year wasted SAVES £50 fix washer £2. (5) Fix toilet leaks silent leak 200-400L/day = 73-146 m³/year wasted £180-365!! food coloring test fix flapper £5 SAVES £200. (6) Cistern Hippo bag displaces 1L flush SAVES £15 or dual-flush 3/6L vs 9L SAVES £60. (7) Collect shower warm-up 5L bucket SAVES £10. (8) Water butts 200L rainwater garden SAVES £50 hosepipe. (9) Efficient appliances A+++ 40L vs 80L old SAVES £40. (10) Bowl washing up not running tap 7L vs 150L SAVES £20. Total implementing all 10: family 4 reduces 200 m³ to 140 m³ = £150 water + £250 energy (less hot water heating) + £135 bath vs shower = £535/year saved minimal effort!
FAQs answered: Switch back within 2 years YES FREE billing reverts unmetered after 24 months permanent cannot switch. Move house meter stays with property new owner inherits you start fresh new address choose metered/unmetered there. Rates vary by company £1.80-5.20/m³ metered, RV £1.40-4.50 multiplier use calculator your company. Meter removed NO physically stays after trial billing reverts unmetered meter inactive. Meter breaks company repairs FREE not your cost estimate usage until fixed. Smart meters YES increasingly available automatic readings leak alerts app tracking ask company if available your area. Installation disrupts 30-90 min shut-off 2 weeks notice fill kettle/bath no long-term issues outdoor install don't need be home.
Bottom line decision: Try FREE meter if fewer people than bedrooms high RV £200+ water-conscious working away = likely SAVES £100-400/year. Stay unmetered if large family 4+ people low RV £100-150 high usage medical needs pools gardens = likely SAVES £100-300/year avoiding meter. Similar costs within £20? Get meter anyway helps monitor usage identify leaks encourage saving behaviors FREE 2-year trial zero risk. National average: metered £379/year saves £54 vs unmetered £433 but YOUR household could save £0-500 either direction depends size/RV/usage. Use calculator above personalized comparison! Contact water company request FREE installation survey 95% properties suitable 4-8 weeks installed zero cost 2-year trial switch back if not working. 57% UK households already metered growing trend - efficient billing transparent usage control. Take advantage FREE trial discover if meter saves YOU money!