Leak detection in Chester and Ellesmere Port
Leak detection in Chester and Ellesmere Port, from Red Rose Leak Detection, traces hidden leaks on heating systems, indoor water pipes and the buried supply pipe, whether Severn Trent or United Utilities supplies the water, in the districts listed below.
Which Chester and Ellesmere Port postcode districts are covered?
Chester, Neston and Ellesmere Port take in 7 CH postcode districts that Red Rose Leak Detection covers, each listed below beside its post town.
- Chester
- CH1, CH2, CH3, CH4
- Neston
- CH64
- Ellesmere Port
- CH65, CH66
South of the city, SY14 (Malpas) is covered as well. The CH4 district reaches across the border into Flintshire, Wales, at Saltney and Broughton, and readers with an address there should check their water bill to see who supplies them.
The Wirral's CH districts, under the post towns Birkenhead, Prenton, Wallasey and Wirral, appear with the rest of the region under coverage by town and postcode district.
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
Is Chester's water from Severn Trent or United Utilities?
Chester's water comes from Severn Trent in the city itself, which took over Dee Valley Water's operations there in 2018 and supplies water only, treated at Boughton from the River Dee, and from United Utilities in Ellesmere Port, Neston, Malpas and several villages around Chester.
| Company | Supplies drinking water to | Source |
|---|---|---|
| Severn Trent | The city of Chester, water only; Welsh Water and United Utilities provide sewerage in its Chester zones | Severn Trent, Chester projects release (30 October 2023) and Household Scheme of Charges 2026-27 |
| United Utilities | Ellesmere Port, Neston, Malpas and the villages of Backford, Capenhurst, Saughall, Tarvin and Tattenhall | United Utilities, Check if you are in our supply area |
Severn Trent says its Boughton works, on the outskirts of the city, has treated River Dee water for the people of Chester “for more than 160 years”. Its own checker rates the City zone's water “Moderately Soft”, 6.77 degrees Clark, for 1 September 2025 to 31 August 2026.
A link between the two companies' works was due that winter: Severn Trent said in December 2024 that its Chester Resilience scheme, a new 3km pipe from Boughton to United Utilities' Huntington works, would be completed before Christmas.
No supplier is confirmed here for Farndon, Aldford, Eccleston, Dodleston or Pulford, so the bill is the place to look. Wherever the water comes from, the pipe from the boundary into the home is the owner's, and a leak on it is a case for underground water leak detection.
What kind of homes are in Chester?
Chester has more flats than the borough around it: in ONS's Chester built-up area 23.4% of households lived in a flat, maisonette or apartment in 2021, almost double the 11.9% across Cheshire West and Chester.
- Flats in the city
- In ONS's Chester built-up area, 23.4% of households lived in a flat, maisonette or apartment in 2021 (10,215 of 43,725), almost double the 11.9% across the Cheshire West and Chester council area.Source: Office for National Statistics, Towns and cities, characteristics of built-up areas: Census 2021, Office for National Statistics, Census 2021 TS044 Accommodation type
- City and borough
- The Cheshire West and Chester council area had 357,150 usual residents in the 2021 Census, against 92,760 in ONS's Chester built-up area.Source: Office for National Statistics, Census 2021 TS001 Number of usual residents, Office for National Statistics, Towns and cities, characteristics of built-up areas: Census 2021
- Detached houses, borough
- 30.6% of households across the Cheshire West and Chester council area lived in a detached house in 2021, against 22.9% across England.Source: Office for National Statistics, Census 2021 TS044 Accommodation type
- Homes built before 1945, borough
- 27.1% of the homes in the Cheshire West and Chester council area were built before 1945, against 34.6% across England (Council Tax stock of properties, 31 March 2026).Source: Valuation Office Agency, Council Tax: stock of properties 2026
Contains public sector information licensed under the Open Government Licence v3.0.
The borough of Cheshire West and Chester is much larger than the city, with almost four times the residents in 2021, so its detached-house and build-period figures describe the wider council area rather than Chester itself.
In the city's flats, a leak can travel from one home to the next. Shelter England says a leaseholder is usually responsible for repairs inside the flat and the freeholder for the building's structure; more on who pays when a leak damages the flat below sits with the pipe leak guide.
Which leaks are traced in Chester homes?
Chester homes have four kinds of hidden leak traced in them: heating leaks that drain the boiler's pressure, pipe leaks inside walls, floors and ceilings, leaks on the buried supply pipe, and the leak an insurance claim depends on.
- Where a radiator valve, a joint or a pipe beneath the floor is letting water out of the heating, central heating leak detection follows the pressure loss to the place it escapes.
- Inside a city flat or a village house, pipe leak detection takes the pressure, sound, heat, gas and moisture readings that narrow a hidden pipe leak to one point.
- A supply pipe in Chester can cross someone else's land before it reaches the house, as the opening diagram shows, and the leak is located along it from above.
- For a home insurance claim, the source of the water is found and recorded, and many policies cover that search under trace and access, though not the repair to the pipe.
When is a Chester leak the water company's job?
A Chester leak is the water company's job when it is on the water main or the company's own pipe: Severn Trent's responsibility in Chester city ends at the boundary of the highway, and the supply pipe from there into the home is the owner's, even where it crosses other land.
Severn Trent: the main and its pipe to the boundary of the highway
The owner: the supply pipe from there into the home, even across other land
Severn Trent warns that a supply pipe can be a century old or more. Leaks on its network are reported through its Check my area page, and leaks on a customer's own pipe go to its Customer Leakage Support team, described on its Your water supply page.
In United Utilities' part, Ellesmere Port, Neston and Malpas included, the company looks after the main, the communication pipe to the property boundary and the external stop tap, and takes reports on its Report a problem page. Both companies sit inside the wider map of leak detection across the North West.