Water Meter Leak Check: Find a Hidden Leak at Home

ByLance Baker

Why a water meter leak check is worth doing

A simple water meter leak check helps you spot hidden water loss before it soaks floors, raises the bill or damages the supply pipe. If you live in Clare, Sudbury, Haverhill, Long Melford or a nearby Suffolk village and the meter keeps ticking when nobody is using water, take a calm, homeowner-level reading first — then decide whether the fault is inside the home or on the private supply pipe. In and around Sudbury, our leak detection Sudbury service can trace the leak for you.

How to run a water meter leak test at home

  1. Find your meter and note a baseline. Most domestic meters sit in a chamber near the boundary, footpath or verge (sometimes just inside the garden). Lift the lid carefully, keep the chamber secure and dry, and write down the reading (digits and any red dial). Do not dig, force the lid or disturb fittings.
  2. Make sure no water is being used. Turn every tap fully off. Pause the dishwasher, washing machine and any auto-fill appliances. If you have a dual-flush toilet, check the button is not stuck. Avoid showers, outdoor taps and filling loops while you test.
  3. Wait, then re-read the meter. Leave the property unused for 30–60 minutes (longer if you prefer a clearer result). Recheck the same digits/dial. If the reading has moved with no intentional use, you likely have a water meter leak somewhere on the private side of the network — either inside or on the supply pipe between the meter and your indoor stopcock.
  4. Confirm your inside stopcock works. Prefer the indoor stop tap first (kitchen cupboard, under the sink, garage, cellar or under the stairs). Turn it gently clockwise to close, then open a cold kitchen tap — flow should stop after a few seconds. Do not force a seized valve with grips; see our tip on a seized or leaking stopcock if it will not move.
  5. Isolate inside versus supply-pipe leakage. With the inside stopcock closed, watch the meter again. If the dials or digits keep changing, the leak is typically on the private supply pipe between the external meter and your stop tap — contact Anglian Water (or Essex & Suffolk Water if that is your supplier) for guidance on company-side apparatus, and arrange a plumber or underground-pipe specialist for the private run. If the meter stops moving with the stopcock closed, turn the stopcock back on and look indoors: dripping taps, a running cistern, appliance hoses, loft ball valve or wet patches under baths and sinks.
  6. Do not excavate or work on street-side kit. Boundary boxes and company apparatus are not DIY. Keep clear of electrics if water is pooling; you may reset a tripped RCD or MCB once only if the area is completely dry — if it trips again, leave it off and call a registered Part P electrician.

When to stop and call us

  • The meter keeps moving after a careful water meter leak test and you cannot find an obvious indoor drip.
  • Your inside stopcock is seized, missing or will not isolate the home — we can fit or free a working shut-off (see finding and turning off your stopcock).
  • You suspect a private supply-pipe leak, damp in the meter chamber on your side, or water near sockets and need make-safe help.
  • Neighbours still have water, your stopcock is open, and cold taps are weak or dry — see no water in my house and our note on the outside stop tap / boundary box.
  • You are unsure whether the fault is yours or the water company’s and want a plumber to check the private side while you report any network concern.

For urgent help with emergency plumbing when a hidden leak or failed isolation needs attention, call 01787 278511 or call/WhatsApp 07825 348536 (WhatsApp) — with over 10 local engineers, we’ll attend as soon as possible, even at midnight. No call-out fee.

Useful safety notes

  • Keep meter chambers closed, secure and free of standing water; never dig up or dismantle the box.
  • Report suspected leaks on company mains or highway apparatus to your water company; private supply pipes after the boundary are normally the property owner’s responsibility under the Water Supply (Water Fittings) Regulations 1999 approach Anglian Water describe for customers.
  • Never open a boiler casing or work on gas pipework — only a Gas Safe registered engineer may do that. Check engineers at gassaferegister.co.uk.
  • Smell gas or suspect carbon monoxide: leave the property, open doors and windows if safe, do not use switches or flames, turn off at the meter only if safe, call the National Gas Emergency Service on 0800 111 999, and seek medical advice for CO symptoms.

Further reading

This is general safety guidance. If you’re unsure, stop and call a qualified engineer.

Anglian PHE Ltd — Top Floor, 4 Market Hill, Clare, Sudbury CO10 8NN · Gas Safe 572792 · NAPIT registered · Trading since 1993 · Rated Excellent on Google, 60+ reviews

Call 01787 278511 · Call/WhatsApp 07825 348536 · WhatsApp

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