Water leak detection in Exeter
Leak detection in Exeter pinpoints water escaping from pipes nobody can see, in the walls and floors of flats and houses, in heating systems, and in the supply pipe running in from the street. West Country Leak Detection covers all 6 districts of the Exeter post town.
- Properties built in 2000 or later
- 25.3%
- Against 18.8% across England
- VOA, 31 March 2026
- Households in purpose-built flats
- 19.6%
- Census 2021
- Households in terraced houses
- 31.3%
- Census 2021
Source: Office for National Statistics, Census 2021, licensed under the Open Government Licence v.3.0
Valuation Office Agency, Council Tax: stock of properties, 2026. Contains public sector information licensed under the Open Government Licence v3.0.
Which EX districts fall within the Exeter service area?
Exeter's service area holds the 6 EX districts of the Exeter post town, and the remaining EX districts across Devon have a page of their own.
- EX1 Exeter
- EX2 Exeter
- EX3 Exeter
- EX4 Exeter
- EX5 Exeter
- EX6 Exeter
Exmouth, Sidmouth, Tiverton, Crediton and the other EX towns are grouped by post town under leak detection across Devon. For a single code, the index of every postcode district covered is quicker.
Which hidden leaks does an Exeter investigation look for?
An Exeter investigation targets four kinds of hidden leak, whether the water escapes from indoor pipes, from the heating system or from the supply pipe underground, or lies behind an insurance claim.
Every one of these is water lost from a pipe in a home, the only kind of leak West Country Leak Detection is concerned with. Cars, gas and roofs belong elsewhere.
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Water leak detection
Dripping heard somewhere in a wall, or a stain creeping across a ceiling, starts the search on the pipes inside the walls and floors.
Water leak detection for pipes in walls, floors and ceilings
- Pipe
- Hot and cold water pipework and fittings inside the property
- What points to it
- Damp patches or stains, peeling paint or bubbling wallpaper, a musty smell, running water with every tap off
- Methods
- Acoustic listening, thermal imaging on hot pipes, moisture mapping, pressure testing and tracer gas
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Central heating leak detection
A sealed system that needs refilling again and again has lost water somewhere, and radiator valves are where Vaillant UK says leaks most often occur.
Central heating leak detection
- Pipe
- The sealed heating circuit: radiators and their valves, flow and return pipes, underfloor heating loops
- What points to it
- A boiler gauge that keeps falling below 1 bar, damp spots or rust marks around radiators, a wet patch around underfloor heating
- Methods
- Pressure testing, loop by loop for underfloor heating, then thermal imaging or tracer gas
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Underground water leak detection
Lower pressure at the kitchen tap is on WaterSafe's list of signs that the buried supply pipe may be leaking.
Underground water leak detection
- Pipe
- The supply pipe buried between the property boundary and the house
- What points to it
- A meter dial still moving with the internal stop tap closed, an unexplained rise in a metered bill, wet ground or lush grass outside
- Methods
- Acoustic listening along the pipe's route, and tracer gas where the leak is quiet
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Trace and access
Ageas wants to agree the work before any of it begins, which is why a claim's trace starts with the insurer's say-so.
Trace and access for an escape of water claim
- Pipe
- Water pipes, the central heating or the buried supply pipe, wherever the escaping water starts
- What points to it
- A home insurer asking for the leak's source to be traced before the claim proceeds
- Methods
- The method that suits the pipe, with the leak's position, the access needed, photographs and the cause where known recorded
Which pipe does South West Water look after in Exeter, and which is yours?
In Exeter, South West Water owns the main and the pipe running out to the boundary of the street the main runs in, along with the external stop tap and the meter; the homeowner owns the supply pipe beyond that boundary and every pipe inside.
Blocks of flats add a twist. Where one supply pipe serves more than one home, South West Water says the owners jointly own those sections, and for flats it says that the responsibility for looking after a shared supply pipe is shared between the homeowners it supplies.
On an underground pipe, South West Water will spend up to half an hour searching for the leak free of charge and say what should happen next. That half hour is the water company's service, and West Country Leak Detection has no part in it. Repair within 30 days of South West Water contacting you about a supply pipe leak, and a leak allowance can apply to the bill.
How do Exeter's flats and newer homes change the search for a leak?
Exeter's flats and newer homes change the search in two ways: a fifth of households (19.6%) live in purpose-built blocks, where a leak can reach the flat below and a shared supply pipe is jointly owned, and a quarter of properties (25.3%) were built in 2000 or later, after the date from which South West Water says all new houses have been built with a meter.
That newer stock stands out: 25.3% built in 2000 or later, against 18.8% across England (VOA, 31 March 2026). Older streets remain, with 31.3% of Exeter households in terraced houses (Census 2021).
Those meters can help catch a leak. South West Water recommends reading yours once a month, both to keep bills accurate and to spot leaks early, and Wessex Water's rule of thumb is that a dial still turning while no water is used means there is most likely a leak.
In a block, the reading only tells you water is going somewhere. Finding which flat's pipe it is, before plaster or paving is broken, comes next, and a ceiling dripping from upstairs is the job of water leak detection when water comes through from the flat above.
Which river supplies Exeter's taps?
The River Exe supplies Exeter's taps: South West Water takes water from the river at its Pynes and Allers treatment works, and releases water from Wimbleball Reservoir to support the river's flow.
Pynes is the works South West Water's 2025 water quality reports name for Exeter's zones. Its postcode search classes the city's water as moderately soft, checked at EX1 1JN.
How do you report a leak to South West Water in Exeter?
Report a leak in Exeter on South West Water's Leaks page, where the company takes reports online, by WhatsApp or through social media.
Meters matter at this stage too. If South West Water finds a leak on the section of pipe it exposes to fit a meter, it repairs that leak free of charge, but a leak on a stretch of supply pipe that stays buried remains the owner's to repair. That buried stretch is where West Country Leak Detection works.