247 Rapid Response
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247 Rapid Response engineer on a leak detection callout in Portsmouth

Portsmouth · Hampshire · South East England

Leak detection in Portsmouth.

Thermal imaging, acoustic, tracer gas, fluorescent UV dye, salt-test damp analysis. Scheduled 1 to 2 working days, target on-site 9am to 5pm slot. Across Portsmouth, Southsea, Cosham, Portsmouth Old Town and the wider Portsmouth.

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Insurance-grade reportingBS-compliant workmanship12-month workmanship guarantee
30-60 MINResponse time
12 MOWorkmanship guarantee
FULLYInsured & accredited
24/7365 days a year

Local context

Leak detection in Portsmouth: what we expect on site.

Leak detection in Portsmouth works against a high water table and very hard water. The water table can mask a leak by keeping the ground damp regardless, so we lean on thermal imaging and tracer gas alongside acoustic correlation to separate a genuine supply leak from background ground water. Portsmouth Water's hardness (290 to 330 ppm CaCO3) furs pipework city-wide, so the typical find is a pinhole or weeping joint on tired pipe rather than a clean break – and on shared-wall terraces we trace carefully to confirm which property the leak actually belongs to. Each trace ends with a written, insurance-grade report. The work is fixed-priced after scoping, with no callout fee – see /pricing.

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Frequently asked

Leak detection in Portsmouth: your questions.

How fast can you reach Portsmouth for leak detection?
Scheduled 1 to 2 working days, target on-site 9am to 5pm slot. We do not run reactive 24/7 callouts in Hampshire unless the district is M25-adjacent (yours is not). Scheduled project visits are slot-booked from our north-west London base. Times quoted are best-effort targets, not contractual guarantees.
What does leak detection cost in Portsmouth?
Portsmouth leak detection survey from £449 for a 60 to 90 minute visit with written insurance-grade report (inc VAT for domestic). Any follow-on repair work charged at the hourly rate that applies at your zone and time of day, billed in 30-minute increments (see /pricing). Salt-test damp analysis from £125 per sample with 48-hour lab turnaround.
Do you cover all postcodes in Portsmouth?
Yes. We cover PO1, PO2, PO3, PO4, PO5, PO6 across Portsmouth, Southsea, Cosham, Portsmouth Old Town and the rest of Portsmouth. Island city, high water table; Victorian terraces with shared back-alley drainage and frequent rear inspection chambers below ground level.
What kit do you bring to Portsmouth for leak detection?
FLIR E76 (320×240 sensor) or FLIR E96 (640×480 sensor) thermal imaging camera (sensitive to <0.04°C), Sewerin Aquaphon A150 acoustic correlator with rod and ground microphone, 5% hydrogen / 95% nitrogen tracer gas safe mix (BS EN 14338-compliant), Spectroline OPX-365 UV dye inspection lamp, and Protimeter Surveymaster moisture mapping tool.
Will the report be accepted by my insurer in Portsmouth?
Yes. Our written leak detection reports are accepted by every major UK insurer for trace-and-access policy claims: LV, Aviva, Direct Line, Admiral, Hiscox, Zurich, AXA, RSA, NIG, Allianz, Ageas, Legal & General. Reports include location coordinates, leak rate or drainage condition estimate, photographic evidence, thermal image scans, and a recommended-repair section the customer can hand to any contractor.

Other South East services

Pair this with our other South East service.

We run both drainage and leak detection across Portsmouth. Drainage handles the unblock + survey + relining work; leak detection handles the forensic trace + insurance report side. Many customers book both on the same visit.

Drainage in Portsmouth →

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