MJ Plumbing Co.
Company Overview
MJ Plumbing offers complete solutions for commercial and plumbing needs. We take care of tasks ranging from clearing blocked drains to full remodels.
We provide service at any time. When you reach out with an emergency, you'll get a real person prepared to address your concerns.
Our estimates are free estimates without exception. MJ Plumbing has proudly served Napa Valley.
Being a family-run enterprise, I have dedicated 20 years in the plumbing field. I truly enjoy what I do and wouldn't choose to do anything else.
Business Services
- Drain installation
- Drain repair
- Gas line installation
- Gas line repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Water heater installation
Business Location & Hours
Mon: | 8:00 AM - 8:00 AM (Next day) |
Tue: | 8:00 AM - 8:00 AM (Next day) |
Wed: | 8:00 AM - 8:00 AM (Next day) |
Thu: | 8:00 AM - 8:00 AM (Next day) |
Fri: | 8:00 AM - 8:00 AM (Next day) |
Sat: | 8:00 AM - 8:00 AM (Next day) |
Sun: | 8:00 AM - 8:00 AM (Next day) |
Recommended Customer Reviews

Matt did a great job with fixing our tub issue. He was extremely professional and he went over and above to make sure the issue was fixed. On time, reasonably priced, professional, excellent service overall! I highly recommend and will definitely be reaching out to him again if needed.

Got ghosted completely, just like a few other reviewers. This is after setting up an appointment and texting information about the leak, with initial response back!
I recommend Eco Plumbing, based in Napa, instead. They saved the day for us in a pinch.

Matt came over within the hour, fixed an almost clogged drain, and charged me fairly!

We had an appointment and MJ Plumbing completely ghosted us.
We called, left a message and sent a text.
Zero response.

Matt was great! Super responsive and diligent on our drain clog issue. Great resource to have local to town.

Matt has come out twice to save the day for us, most recently on Christmas Day in the evening. He is a true professional and so kind. We highly recommend Matt.

The least professional business I have dealt with. Yes, his rates are reasonable, but he doesn't arrive as promised. The last experience that I had with him was when my hot water heater broke. He came in the morning, took the broken valve, asked me for a check to cover the replacement valve and said I would have hot water by the end of the day. As well, he promised to keep me updated, but that never happened. I never got hot water and I never received the valve. But, he cashed the check. Would not recommend.

Long-time customer. Matt and crew give 100% in service, follow-through and positive attitude -- a great group of guys you can really trust. Call them. You'll see.

Matt came to our rescue at short notice and got water back on to our house. He charged us a very reasonable rate. I like him and would recommend him to anyone. Thanks Matt.

Matt is epic. Service industry people just don't get any better. I had a non- emergency problem with my bathroom sink drain on the busiest day of the year. Matt assured me at 10:00AM that he would get to me today. He kept in touch and came , with my blessing, at 9:00PM. Fixed my sink with all upgraded parts, then made the mistake of asking my wife if there was anything more. She asked if he could make the bath shower head with more pressure. He did that improvement then fixed the kitchen sink faucet head that would not retract properly nor stay engaged tightly in the gooseneck. As he was saying goodbye at 10:40PM he insisted on tightening the screen door at the front door. CALL MATT.