The forecast average SES Water household bill is £257 a year from 1 April 2026. That is £26 more than the £231 average for 2025/26.
Your total household cost will usually include a separate wastewater bill from another company. Do not compare this figure directly with a combined-company average.
What your bill includes
The published £257 figure covers clean water supply. Wastewater charges are billed separately in much of Parts of Surrey, Sussex and Kent.
Area and postcode guide
SES Water serves Parts of Surrey, Sussex and Kent. Postcode areas commonly associated with its region include CR, KT, RH, SM, TN, but boundaries can divide a postcode and water and wastewater services may come from different companies.
Estimate your SES Water bill
The company average is a benchmark, not a tariff. A one-person metered home that uses water carefully can be well below it. A larger household may be above it. Use the calculator with your household size and a realistic usage level.
Your latest bill and the tariff published by SES Water are the authoritative sources for your charging zone, fixed charges and meter rates.
SES Water questions
What is the average SES Water bill in 2026/27?
SES Water's published water-only household average is £257 a year, equivalent to £21.42 a month. Individual bills vary.
Can I switch away from SES Water?
Household customers cannot normally switch their appointed regional water company. Eligible businesses in England can choose a water retailer.
Why might my bill be higher than the average?
A larger household, high metered consumption, a leak, a high rateable value or extra services can all result in a higher bill. Compare like with like and check whether your figure covers both water and wastewater.