GM Plumbing Septic and Sewer
Company Overview
We focus on pipework septic evaluations, pumping, and drain maintenance offerings for the Antelope Valley, Santa Clarita area, and San Fernando region for over 20 years. Our team works on industrial, domestic, mobile homes, and food establishments. We partner with property managers, insurance companies, rental properties, and home warranties, winterization, hot water systems, pressure problems, septic tank repairs and new installations, lot drainage, sewer maintenance, compliance fixes, appliance installations, complete plumbing solutions, camera evaluations, waste disposals, tap installations, leaky showers, bathtub swaps, repiping, water removal pumps, leak identification, foundation leaks, mold remediation, backflow devices, high-pressure jetting, sewer maintenance, gas pipes, tankless water heaters, fresh water connections, and earthquake shut-off valves. Ask about our commitment to quality.
We proudly stand as a locally-owned business that has been serving the greater Los Angeles and Antelope region for two decades. We pride ourselves on building lasting connections with our clients by delivering the most reliable service for our water system services in the industry. Our commitment to excellence is why a large percentage of our work comes from returning customers and referrals.
We truly enjoy what we do. As leaders in the market, we take pride in our knowledge in the plumbing field. In my role as a Customer Service Representative, I am focused on delivering excellence and priority to all our clients. I aim to enhance your experience with each call and ensure that you are well taken care of.
Business Services
- Drain repair
- Gas line installation
- Gas line repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
Business Location & Hours
Mon: | 6:30 AM - 9:00 PM |
Tue: | 6:30 AM - 9:00 PM |
Wed: | 6:30 AM - 9:00 PM |
Thu: | 6:30 AM - 9:00 PM |
Fri: | 6:30 AM - 9:00 PM |
Sat: | 6:30 AM - 9:00 PM |
Sun: | 6:30 AM - 9:00 PM |
Recommended Customer Reviews

made an appointment with Morris for today [Saturday] between 9 & 10am. Called him at 10:30 to see if we were still on, Morris picked up and said they were running late but they were on there way. It's 2pm no one will pick up and no sign of them. Wasted my whole Saturday waiting for GM plumbing to show up. Very busy, lots to do today, Extremely upset.

We got a quote from this company to replace a septic tank; the price was reasonable, so I hired them. They said they went to get the plans from Building and safety, but placed the tank in the wrong place and not deep enough - and charged us another $800 to put in another leech line - when it wouldn't pass inspection, he got angry at having to come back out and reset it, and panned our regular plumber's work on our house build, dug up our disconnected power line one day, then broke it the second; and told me my husband said it was ok to cut it (a lie). The old septic tank is still sitting in my front yard because 'the guy said he would take care of it' (another lie). I tried calling him, but he got so agitated and unprofessional...downright rude. I now have to get repairs done on my power line, and he refuses to take responsibility for it - just made excuses that it wouldn't be able to be used anyway (like that makes it ok to destroy something on someone's property? They are not qualified to judge power lines) NEVER use these people!

AWFUL!!!
not only did he start a job but never finish it destroyed plants that didnt have to be asked for more money 800.00 more then quoted left me without water again should have been completed in a day --I had to get another plumber to finish he took advantage of me.

I have used GM plumbing & septic for years and am totally satisfied with the professional
service by Morris. He is knowledgeable, efficient, works with the customer and importantly, is honest.
One time I had to use ""The Plumber"" and regretted it. For quality, civility and reliability, call Gm and ask for Morris.
henry, green valley

We had parts of our house flooded, by a leak that was coming from the bottom of the toilets in both bathrooms. I called multiple plumbing companies. Some didn't show up at all, others did and had no idea how to handle the problem, yet others quoted me a very high price. I finally found GM on the web and called them. Morris showed up the same day I called, beat everyone's price (even though he had no idea what others had quoted me), and took care of the problem.
When he came, he was very helpful right of the bet. He went beyond and above what his actual duties were. He worked very hard, and very fast. He performed services that the company that came before him did and charged us $150, for free!!! Morris was extremely knowledgable. He was also really personable, and really cared. He gave us advice that is literally restoring our home. He could have done just what was in his job description, charged us for it and moved on, but he spend extra hours ensuring that our family is on the right track.
Thank you Morris!

MORRIS IS A LiAR and UNPROFESSIONAL!
He not only failed to show up to appointed time more than 10 times, he also broke much yard things during his plumbing work. Now i am much poorer than I first started with broken things at my house.
Never returns my phone calls; I'm planning on hiring a lawyer to settle this lack of communication and service which I already paid for.
Stay away unless you want a long period of frustration and broken promises !

I had these guys come out a few years back to fix a leak under my sink. A few days later, the leak was back; the problem hadn't actually been fixed. I moved on to a different plumber.
Then, my landlords called GM the other day to investigate a backup problem. The guy showed up an hour & a half late, claimed it was the septic tank, needed to be pumped, & he'd have someone here with the truck later that day. They never showed, & they have not answered my calls or followed up for the past two days. Furthermore, their voicemail is full & I am unable to even leave a message.
I'm generally pretty lenient with stuff like this, but the level of unprofessionalism I've seen from this ""company"" is unlike anything I've ever seen.

Called and. Scheduled an appointment for 3:30 . No show, won't answer phone . Completely unprofessional.

No stars very un professional, didn't install what was paid for when asked to come and fix and or make right by the elderly customer,has not shown good faith. Install was a hasard waiting to happen.over charged and just all around not fair.

Was quoted $250 for a pump out when his truck was broken...3 months later price went to $300 +..quick to argue...had a bit of an attitude..which I enjoyed. He may be on the ""A.V. SlimFast program""...lol lol
Oh yeah was just quoted $250 (yesterday) for a pump out, by his competitor.
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