Services · Humboldt County
Water leak detection and repair
Leaks rarely surface where the break is, which is why guessing gets expensive. We locate the leak properly, bringing in sonic detection where it takes that, then repair it. Residential and commercial, 7 days a week, 7am to 5pm.

- 7 days a week, 7am to 5pm
- Licensed and insured, CA 1147550
- Perfect 5 star Google rating
- Women owned and locally run
What we handle
- Leak locationSonic detection for the ones that hide
- Slab leaksWarm floors and a rising water bill
- Behind-the-wall leaksTraced to the source, not the stain
- Supply line repairMeter to house and under the house
- Fixture and valve leaksFaucets, hose bibs, and shutoffs
- Emergency repairBurst lines, 7 days a week
How it works
Call or book
A real person answers 7 days a week, 7am to 5pm. We confirm an arrival window that actually works for you.
We diagnose
We locate the leak before opening anything, because water travels and the stain is rarely above the break. Some show themselves quickly; the rest take sonic detection.
You get a flat quote
One number, parts and labor, approved before we start. No surprise line items.
We fix it and clean up
Once it is located you get an estimate for the repair, or for rerouting the line where that is the sounder fix. Most leaks are repaired the same visit, though larger supply runs may need a return once parts are sourced.
Straight pricing, no surprises
You get a flat quote before any work starts, and it does not change once we are in the wall. The diagnostic fee is credited toward the repair. For full replacements we offer financing, so a failed tank does not have to turn into a bad month.
- Flat quotes approved up front
- Diagnostic fee credited to the repair
- Financing available on replacements
- Licensed and insured, CA 1147550

Perfect 5 star rating on Google
Read all 51 reviews on GoogleAlex and the team at Northwest Plumbing are outstanding. We had an emergency with a significant leak on our side of the city water main, discovered first thing the morning by city crews. I reached out to Northwest via their web interface, and Alex and her office team both called back within an hour and a half. She had availability (thankfully!) in the afternoon, and we were fully fixed and back up before 3 PM - amazing. The project also came in squarely within her estimate range at a very fair price, especially for short-notice work. The little things also really mattered - they send text updates when they are en route, when the service is active and complete, and also sent pictures with the invoice via email of the repair before and after the work. It was refreshing to have all of this customer-facing communication. Overall the customer service experience on top of the actual high-quality plumbing service was fantastic. The fact that they are local and woman-owned is also a great bonus.
A major leak at my commercial building. These ladies got me right into the schedule and took care of it all. From my first call to completion it was less than 5 hours. Communication was so great. I knew when they were coming, received a call about the task at hand and what the cost would be then the work was done. The day could have gone completely different for me and my tenant but it all went so smooth. I will continue to support this small Humboldt County women owned business.
Alexandra replaced the waterline from the meter to my house and under the house too. She did it all in one day and at a very fair price. No more leaks! I am very happy I used Northwest Plumbing Solutions and will be calling her back for more work soon. I highly recommend Alex.
Water leaks questions
A jump with nothing visible usually means the leak is underground, under the slab, or inside a wall. Shut everything off and watch the meter: if it still moves, water is going somewhere and it is worth locating properly.
Common signs are a warm patch on the floor, the sound of running water with everything off, unexplained damp at the edge of a room, and a bill that has climbed without a change in use.
Not always on the first pass, and we would rather say so than promise otherwise. Sometimes the signs line up and it is quick. When they do not, we use sonic leak detection to listen for the escaping water through the slab and narrow it to a point. Once it is located we can give you an estimate for repairing that section or rerouting the line around it.
Not to find it. Locating comes first so that anything we do open is opened in the right place. Guessing is what turns a small repair into a large one.
Usually yes. The service line from the meter to the house is normally the property owner’s, and long runs are a common failure point because the water rarely surfaces where the break is.
If it is actively running or causing damage, yes, shut it off at the main. If you cannot find your main, call us anyway and we will talk you to it on the phone.
Yes. We work with property managers and commercial buildings regularly and can schedule shutdowns around your hours where the job allows it.
Got a leak?
Call and talk to a real person, or book a visit online. We are here 7 days a week, 7am to 5pm.
