Your water meter is running and you don't see any open taps. Then you might think of a running water meter leak with continuous consumption, pressure loss, wet spots, or noise in the pipes.
We at Ultrices Leak Detection find a hidden leak quickly and cleanly. We measure using acoustics, a thermal camera, and tracer gas, follow the piping network, and check the main shut-off valve, check valve, and couplings.
Here is how to tackle a Watermeter running water pipe leak smartly, with certainty and without damage. Read our Google reviews five out of five via reliable leak detection at water meter and water pipe.
Table of contents
Water meter running without tap open: causes and significance
When your water meter runs while all taps are closed, there is almost always a water pipe leak. In the event of a leak, you will see that the star or roller on an Itron, Sensus, Kamstrup, Diehl, or Elster meter moves continuously. This indicates flow that you are not using. At Vitens, Evides Waterbedrijf, Waternet, PWN, and Dunea, this phenomenon is also considered an indicator of a hidden pipe leak. We at Ultrices Leak Detection link this signal to pressure loss, unexplained damp spots, and sometimes a rapidly rising water bill. Due to capillary action, moisture can move to skirting boards, floors, and walls, causing mold or peeling plaster. A running water meter requires targeted investigation in accordance with NEN 1006 principles for drinking water installations and careful work within VCA VOL and NEN 3140 safety frameworks.
- Continuously running meter: flow indication even when all taps are stationary
- Pressure drop in cold or hot water circuit: noticeably less flow or fluctuating temperature
- Moisture and mold: discoloration, musty odor, peeling sealant
- Rising costs: abnormal measurement leads to a high water bill and possible water damage
How we detect a water pipe leak without breaking anything
Our measurement strategy combines acoustic correlation, infrared thermography, tracer gas, and endoscopy with digital logging. We work with professional detection equipment such as an acoustic correlator, electroacoustic microphones, a thermal imaging camera, moisture meters with capacitive and resistance technology, pressure test kits, and hydrogen-helium tracer gas. The physics behind the measurement is clear. A leak causes turbulence and noise, results in local temperature deviation, and allows gas or moisture to migrate through structures. By correlating these signals, we locate the exact point without any demolition or breaking. Read more about our leak detection without heels and see how you get clarity quickly with minimal inconvenience.
- Thermography: thermal image visually maps a cold bridge or heating caused by leaking tap water
- Acoustic analysis: flow sound profile makes micro-leaks audible through concrete and tiling
- Tracer gas: slight hydrogen mixture escapes through the smallest hole and is detected by sensors
- Endoscopy: mini camera inspects shafts, soffit, and crawl space for visual confirmation
Signs of pressure loss and high water bill due to leakage
A running water meter leak is often accompanied by pressure loss, loosening grout, or wet spots near the meter cupboard, kitchen, bathroom, or crawl space. With a smart meter or data logger, you see continuous flow at night. We combine measurement data with structural engineering knowledge, ISSO practical guidelines, and experience in residential and non-residential buildings. If you would like to delve deeper into the budget impact and practical steps that assist with claims and repairs, please take a look. What to do about a suddenly high water bill for clear next steps with your insurer.
- Night usage: registrations show consumption while no one is using water
- Suspicious zones: pipe runs under tiled floors, in walls, or through crawl spaces are risk locations
- Materials: compression and press connections, copper, PEX, and multilayer may start leaking over time
- Environmental factors: floor settlement, corrosion, and frost damage increase the risk
Types of water meters and what they reveal in the event of a leak
There are volumetric meters, turbine and Woltman meters, wet-runners and dry-runners, and smart AMR or AMI variants. For all types, an unexplained flow is a red flag. A wet-runner is particularly sensitive to fine flow, which indicates micro-leakage. A smart meter from, for example, Kamstrup or Sensus can provide interval data with which we analyze the leak profile based on time. In apartment buildings and commercial buildings with sub-meters, correlation between the main meter and sub-meter helps isolate the leak level to a circuit, such as the kitchen group or hot water circuit.
Step-by-step plan for a running water meter and a hidden pipe leak
- Close all taps: check if the slider keeps turning and note the score and time
- Isolate per circuit: close individual shut-off valves such as the kitchen group or outdoor tap and observe the meter
- Call Ultrices leak detectionWe schedule immediately and are often on-site within 1 hour. We are available nationwide via 085 2505 217 or info@Ultriceslekdetectie.nl, also via WhatsApp at the same number.
- Non-destructive measurement: use of thermography, acoustics, and tracer gas for exact pinpointing without demolition
- Expert report and repair: within 3 days you will receive an insured-suitable report with photolog and measurement data
Leak detection process request
Our team works on a no cure no pay basis with a 99 percent success rate and guarantees coverage if your insurer reimburses the examination. For targeted in-depth information on techniques, you can find our specialist leak detection for water pipes including case studies.
Insurance reporting and guarantees for leak detection
We are familiar with the procedures of Dutch insurers and work according to Kiwa and VEWIN guidelines for drinking water installations. You will receive a comprehensive expert report including the cause, location, damage profile, and measurement references to enable underwriters to make quick decisions. We assist with prevention advice based on TNO insights into material behavior, such as stress corrosion in copper and creep in plastics. Our service is available 24 hours a day, with an emergency service for calamities throughout the Netherlands, for private and business clients. We work without demolition where possible, have 15 years of experience, score 5 out of 5 in Google reviews, and deliver a customer journey that provides certainty. If you want immediate clarity and cost control, request your free leak detection quote within 24 hours turn on and prevent further water damage.
Finally, a running water meter leak requires precision. With professional detection equipment, protocols aligning with NEN 1006, and our practical approach, Ultrices Leak Detection stands for a quick diagnosis, minimal disruption, and a clear path to repair. You can always call or WhatsApp us at 085 2505 217 or email info@Ultriceslekdetectie.nl.
Frequently asked questions
Why does my water meter keep running even though all the taps are closed?
If your water meter runs while everything is turned off, this often indicates an invisible leak in the internal piping behind the water meter. Common causes include a dripping toilet float, a leaky coupling in the crawl space, corrosion in a copper pipe, or a leak around underfloor heating. Sometimes it appears dry, but moisture is seeping into the floor or wall via capillary action. A truly defective water meter is rare.
Immediately close the main valve in the meter cupboard or meter pit. If the meter stops, the problem lies in your own installation. If the meter continues to run with the main valve closed, contact your water company such as Vitens, PWN, or Evides. For internal piping, we at Ultrices Leak Detection are available nationwide, on-site within 1 hour, without any demolition or breaking work.
How do you test yourself if a continuously running water meter is caused by a hidden water pipe leak?
Note the meter reading and the small dial, close all taps, and wait fifteen minutes. If you still see movement, repeat the test for an hour to estimate the loss in liters per hour. Listen at the incoming pipe using a screwdriver as a sound amplifier. Check for warm spots in the floor, dropping central heating pressure, or a continuously refilling boiler. This indicates continuous flow and pressure loss due to a leak.
If you are exceeding ten liters per hour or have any doubts, call us in. We locate the leak using professional detection equipment such as acoustic correlation, thermography, hydrogen tracer gas, endoscopy, and pressure tests; we are VCA VOL and NEN 3140 certified. Would you prefer to see how heat traces work in wet bathrooms first? Watch our explanation: Thermographic bathroom leak detection step by step.
Who do you call first for a water meter that keeps running: the water company or leak detection?
First, close the main valve. If the water meter continues to run, there may be a problem with the connection pipe or the water meter itself. Contact your regional water company, such as Vitens, PWN, or Evides; they manage water up to and including the meter and can perform an inspection. If everything in the meter pit is dry, prompt leak detection is still advisable to limit damage.
If the meter stops when the main valve is closed, the leak is in your internal plumbing or appliance. We trace leaks in bathrooms, risers, crawl spaces, and underfloor heating, often within an hour. If you have wet spots or drips around sanitary fixtures, call for immediate assistance via our emergency page: Fast help with bathroom leak with emergency service.
What does leak detection cost if your water meter keeps running, and how quickly will there be clarity?
Costs depend on the type of building, piping network, and accessibility. You will receive a free quote from us within 24 hours with a clear fixed rate per inspection, for both business and private clients. We work on a no-cure, no-pay basis, with a 99 percent success rate, five out of five Google stars, and without any disruptive demolition work. In urgent cases, we are on-site within 1 hour and share preliminary findings immediately at the location.
Within three days, you will receive a comprehensive expert report with photos, measurement data, and repair advice, suitable for insurers. Leak detection and consequential damage resulting from a pipe burst are often covered by buildings insurance. We work with insurers and offer a coverage guarantee on our report in accordance with policy conditions; please verify your coverage with your insurance company. If you want to know exactly how your case is finalized, read more about reporting for insurance: Leak detection report for insurance claim.