← Water Index
London
GB · Thames Water
Grade A
Grade A — no material assumption — the figure may be sorted, ranked and compared. How the grade is set →
Cost of 1,000 litres
£ 3.11
standardized household · 15 m³ a month
A month, water
£ 46.59
£ 559 a year
A month, with wastewater
£ 79.35
wastewater 41% of the bill
How much of the bill is wastewater
New York
61%
Paris
57%
Sydney
51%
London
41%
Tokyo
41%
Hong Kong
37%
Singapore
34%
How much of the bill sits outside the volumetric rate
Perth
86%
Singapore
63%
Paris
57%
Seoul
42%
Dubai
25%
Sydney
17%
London
14%
Abu Dhabi
5%
New York
0%
Both comparisons are proportions, so they hold across currencies. The bills themselves do not, and are not compared.
Cost by volume
A household on 5,000 litres a month pays about 30% more per litre than one on 25,000, because the fixed charges spread over less water.
Where the water comes from
SurfaceGroundwater
Sources, assumptions and data quality
ComparabilityGrade A
Tariff effective2026-04-01
ReconciledNot against an invoice
Reference connectionStandard metered household connection. Table 1 of the Charges Scheme 2026-27 gives one standing charge for a single metered household — GBP 66.87 water and GBP 128.13 wastewater — without differentiating by meter size, so the designated residential connection is the metered household account itself.
ValidationSource verified ✓ · Calculation verified ✓ · Public reconciliation —. A utility publishes a tariff, not a worked example of this benchmark; an absent reconciliation is reported, not treated as a defect in the figure.
Publication · water supplyPublished
Publication · total water servicesPublished
ScopeReference account is metered. Metering is not universal in the Thames region; assessed and unmetered regimes exist and are priced differently.
ScopeFull wastewater fixed charge applied. The abated GBP 80.43 rate requires a surface water drainage rebate the reference account does not claim.
subsidised tariffno
nationality dependentno
wastewater includedno
fixed chargeyes
consumption blocksno
variable surchargeno
SourceThames Water Utilities Limited — Household Charges Scheme 2026-27, version 2.0