A plumbing leak may announce itself with a drip, but many leaks stay behind a wall, under a slab, or along an outdoor water line. Across Columbia County, catching unusual water use early can help limit damage to floors, cabinets, drywall, and belongings. Leak detection starts with simple observations and a careful meter check; it is not a reason to open walls or crawl into unsafe spaces. Northwest Plumbing Services is a family-owned business led by David and Mindy Sass, serving Oregon since 1991. If your check points to a plumbing problem, call the office so the situation and next step can be discussed.
Common signs of a hidden leak
Watch for a water bill that rises without a clear change in household use. Other clues include a toilet that cycles on its own, damp or discolored drywall, peeling paint, a musty smell, warm or wet spots on a floor, or a sound of running water when every fixture is off. A leak outside may show as an unusually green patch, soft soil, pooling, or water near a foundation. None of these signs identifies the exact location, but each is a good reason to investigate promptly. When the source is uncertain, review our Plumbing Leak Detection guidance.
- Compare recent water use with a normal month rather than relying on one bill alone.
- Do not ignore small stains or intermittent sounds; hidden water can cause damage before it becomes dramatic.
A practical water-meter check
Choose a time when no one needs water. Turn off faucets, appliances that use water, and any irrigation you can safely control. Note the meter reading or the movement indicator, then wait at least 30 minutes without using water and check again. Movement suggests water is leaving the system, although some meters and appliances behave differently. If the indicator moves quickly, or you cannot isolate the source, stop troubleshooting and contact the office.
- Never shut off a valve you do not recognize or disturb equipment that may serve fire protection.
- Keep children and pets away from wet electrical areas, and avoid standing water near outlets or appliances.
What leak detection can involve
Leak detection is the process of confirming that water is escaping and narrowing down where it is happening. A professional may compare fixture operation, inspect accessible pipes and connections, and evaluate water or drain lines before recommending a repair. The right approach depends on whether the suspected problem involves a faucet, toilet, water heater, interior supply pipe, or line serving the property. Ask what can be confirmed without unnecessary disruption and what repair options are appropriate.
- Document the meter reading, visible damage, and when the symptom appears; photos can help explain the concern.
- If a fixture or pipe is actively leaking, use its accessible shutoff only if you can do so safely, then protect the area from further water.
Plan the next step in Oregon
Northwest Plumbing Services works on plumbing repairs, pipes, faucets, toilets, disposals, water and drain lines, repiping, water heaters, remodels, new construction, and commercial plumbing. The team also offers accessible low-threshold Bestbath showers. Call (503) 366-1323 or email office@nwplumbingservices.com with the symptoms, the property location, and any shutoff or damage information you have. Contact our Oregon office for showroom directions or mailing details. For a pipe condition that needs attention, review our Pipe Repair guidance.
Questions about this topic
How do I know whether a higher water bill means I have a leak?
A higher bill can have several causes, including seasonal use or a change in household activity. Turn off water at fixtures and appliances, observe the meter for about 30 minutes, and contact Northwest Plumbing Services if it continues to register use or you cannot locate the cause.
Can Northwest Plumbing Services find a leak behind a wall or underground?
The office can discuss the symptoms and the available next step for your property. Do not assume a particular detection method or response time; call (503) 366-1323 to confirm what can be evaluated and repaired.

