WATER BILLS · 2026/27

South West Water average bill 2026/27

South West Water’s forecast average household bill for 1 April 2026 to 31 March 2027 is £740 a year for water and sewerage, up £39 (6%) on 2025/26.

Last updated 11 October 2026Household bills · 2026/27Source: Water UK forecast averages

How South West Water compares

The average household water and sewerage bill across England and Wales is £639 in 2026/27, up £33 (5.4%) on 2025/26. South West Water’s average is £101 more than that.

Bills between 2025 and 2030

Ofwat’s 2024 price review sets what water companies in England and Wales can charge from 2025 to 2030. Ofwat said bills would increase by an average of £31 a year before inflation up to 2030 to pay for investment.

What the average does and does not tell you

• It is a forecast average across all South West Water household customers, not a tariff or a quote.
• With a water meter, your bill depends on how much water you use. Without one, it usually depends on the property, for example its rateable value or an assessed charge.
• Business customers have separate charges; this page covers household bills.

Where South West Water supplies

South West Water serves Cornwall, Devon, the Isles of Scilly and parts of Dorset and Somerset. Check your bill or postcode with the company if you are not sure who supplies you.

For the tariff that applies to your home, see South West Water: household charges scheme 2026-27 (PDF) ↗.

If you’re struggling to pay

Social tariffs

Every water company in England and Wales has a social tariff that can reduce bills for people on low incomes. Who qualifies and how much it saves depend on the company, so ask yours. CCW also advises contacting your company early if you are falling behind, and Water Direct lets people already in debt pay through their benefits. CCW: help with bills ↗

WaterSure

WaterSure caps the bill of metered households who receive a qualifying benefit, such as Universal Credit, Housing Benefit or Pension Credit, and either have three or more children under 19 at home or use extra water because of a medical condition. The government announced in 2026 that it will widen eligibility and support; CCW expects the changes in 2027. CCW: what is WaterSure? ↗

Water meters

Switching to a meter can lower the bill for smaller households. CCW says meters are usually fitted free and you can switch back to unmetered charges within 24 months, except in areas of England with compulsory metering. Its water meter calculator gives a rough estimate. CCW: water meter calculator ↗

Complaints and independent advice

CCW is the independent voice for water consumers in England and Wales. If your company has not resolved a complaint, you can take it to CCW once you have a final response or have waited eight weeks; its complaint service is free. Its team is on 0300 034 2222 (England) or 0300 034 3333 (Wales), 8.30am to 5pm on weekdays. CCW: make a complaint ↗

Questions

Other water companies

• Affinity Water
• Anglian Water
• Bournemouth Water
• Bristol Water
• Dwr Cymru (Welsh Water)
• Essex and Suffolk Water
• Hafren Dyfrdwy
• NI Water
• Northumbrian Water
• Portsmouth Water
• Scottish Water
• Severn Trent Water
• South East Water
• South Staffs Water
• South West Water
• Southern Water
• Sutton & East Surrey Water
• Thames Water
• United Utilities
• Wessex Water
• Yorkshire Water

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