GM Plumbing
Company Overview
At GM Plumbing, we focus on drainage, waste services, septic solutions, and drain cleaning. We are licensed installers for Malibu, MRP IT-15002. For over 20 years, we have proudly served the San Fernando Valley. Our expertise spans commercial, home, modular homes, and restaurants. We collaborate with property management companies, insurance companies, leased spaces, and service contracts. Our services include winterization, hot water systems, water pressure issues, septic tank repairs, lot drainage solutions, waste line cleaning, code violation corrections, appliance setups, complete plumbing solutions, camera services, garbage disposals, faucets, leaky showers, bathtub swaps, piping upgrades, sump pumps, water loss detection, subsurface leaks, fungus elimination, backflow devices, jetting services, sewer cleaning, gas system services, on-demand heaters, fresh water connections, and seismic shut-off systems. Inquire about our guarantee.
Home Onsite Sewage Services
Malibu, the Golden State
Malibu OWTS Inspectors
We offer complete onsite sewage solutions for residential and commercial property owners in Malibu and greater Los Angeles. From Malibu-approved septic inspections to soil percolation testing, to custom septic installations and installation, we excel in all aspects of septic care. Our helpful staff understands Calabasas septic system regulations and requirements, enabling us to expedite your project. Our knowledgeable wastewater treatment consultants can assist you in avoiding costly redesigns due to hidden requirements.
Your system may require pumping if:
Drains and toilets are backing up with sewage
Toilets flush slowly
Wastewater surfaces
Unpleasant odors linger around your home
Excessive plant growth is seen over the absorption field
Your system hasn't had maintenance in some time.
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: | Open 24 hours |
Tue: | Open 24 hours |
Wed: | Open 24 hours |
Thu: | Open 24 hours |
Fri: | Open 24 hours |
Sat: | Open 24 hours |
Sun: | Open 24 hours |
Recommended Customer Reviews

I am in the process of buying a house with a septic tank, which I have never used before. I hired GMP plumbing and sewer to inspect the system before purchase. Mr.Morris came on time, took a few pictures, explained to me the system was not draining and he could not do anything more. He informed me of different options ranging from $10,000-$80,000. The seller's did their own inspection three days later and processed their report a day later stating there was no issue. I didn't receive a report from GMP for 6 days, and it took numerous emails and calls from the realtor and myself to get it: 3 pictures and a page with check marks and little information- which stated at the bottom ""not for real estate use"". To say I wasted $575 is an understatement, and I do not have any documentation to refute the seller's report. DO NOT USE.

Would not recommend this company. The owner is not knowledgeable about the process in Malibu and led to a lot of delays for our septic system.