A · B · C-36 Licensed Underground Utility Contractor
Trenchless Sewer, Water Main & Pipe Bursting Specialists
When a sewer, water main, or gas line fails, you need a contractor with the equipment, experience, and licensing to complete the job correctly. COR Plumbing specializes in underground utility construction, trenchless pipe replacement, and water main installation throughout Ventura County and surrounding areas.
Trenchless Technology
Replace Underground Pipe Without Tearing Up Your Property
Our trenchless technology replaces underground pipelines with minimal excavation — protecting landscaping, driveways, sidewalks, parking lots, and buildings while reducing project time and restoration costs.
What We Do Underground
Trenchless & Underground Utility Services
Sewer, water, and gas — from a single residential sewer lateral replacement to underground utility installation for a commercial site.
- Trenchless Sewer Replacement
- Trenchless Pipe Bursting
- Sewer Main Repairs
- Sewer Laterals
- Water Main Replacement
- Commercial Water Services
- Gas Line Installation & Replacement
- Underground Gas Lines
- Emergency Water Main Repairs
- Fire Line Installation
- Underground Utility Installation
- Underground Utility Excavation
Trenchless Pipe Bursting
Replace Your Sewer Without Destroying Your Property
Traditional replacement means digging long trenches through landscaping, concrete, asphalt, and driveways. With pipe bursting, we pull a new HDPE pipe through the old pipeline while breaking apart the damaged pipe underground.
Benefits
- Minimal digging
- Faster installation
- Strong, seamless HDPE pipe
- Root resistant
- Long service life
- Less property damage
- Lower restoration costs
Ideal For
- Clay sewer pipes
- Orangeburg pipe
- Cast iron sewer lines
- Broken sewer mains
- Root intrusion
- Collapsed sewer laterals
Sewer Main Replacement
We Inspect, Locate, and Replace
Every property is different. We inspect, locate, and replace your sewer using the best method for your property — trenchless where it fits, traditional excavation where it doesn’t.
Common Signs
- Sewer backups
- Slow drains
- Sewer odors
- Wet spots in the yard
- Broken clay pipe
- Multiple recurring stoppages
We Perform
- Sewer camera inspections
- Pipe locating
- Trenchless replacement
- Traditional excavation
- Sewer testing
- City inspections
Water Main Replacement
Low Pressure and Constant Leaks Get Expensive
A damaged water service means expensive bills, low pressure, and continual leaks. We replace water lines from the meter to the building with minimal disruption.
We Install
- Residential water services
- Commercial water mains
- Domestic water systems
- Copper water mains
- HDPE water mains
- C900 PVC water mains
- PEX underground services
Gas Line Installation & Replacement
Gas Work, Installed Safely and to Code
From a single service line to a complete gas system, our gas work is installed safely and to code for residential and commercial properties.
We Install
- Underground gas lines
- Gas service lines
- Black iron gas piping
- CSST
- Gas line repairs
- Gas pressure regulators
- Commercial & residential gas systems
Commercial Underground Utility Contractor
Underground Utility Work for Commercial Properties
We perform underground utility work for a wide range of property types across Ventura County and neighboring counties:
- Commercial Buildings
- Restaurants
- Apartment Complexes
- Shopping Centers
- Industrial Facilities
- Schools
- Government Facilities
- Medical Buildings
- Property Management Companies
Why Choose COR Plumbing
The Right Licensing and the Right Equipment
California Licensed Contractor
A-General Engineering, B-General Building, and C-36 Plumbing licenses under LIC #1064765.
Underground Utility Specialists
Underground utility construction is a core part of our work, not an occasional side job.
Trenchless Equipment
The equipment to burst and pull new pipe rather than trench across your whole property.
Sewer Camera Inspection
We see the actual condition of your line before quoting, so the plan matches the problem.
Water Main Experts
Residential services through commercial water mains, in copper, HDPE, C900 PVC, and PEX.
Gas Line Specialists
Underground and above-ground gas systems, installed and tested to code.
Commercial & Residential
From a single-family sewer lateral to underground utilities for a commercial site.
Fully Insured
Licensed and insured, so your property and your project are protected.
Emergency Service Available
Water main breaks and sewer failures don’t wait — call or text our emergency line.
Where We Work
Our Service Area
- Santa Paula
- Ventura
- Oxnard
- Camarillo
- Fillmore
- Thousand Oaks
- Moorpark
- Simi Valley
- Ojai
- Port Hueneme
- Newbury Park
We proudly serve these communities and the greater Ventura County, Santa Barbara County, and western Los Angeles County areas. Not sure if we reach you? Call or text (805) 947-8391.
Good to Know
Trenchless & Underground Questions
It depends on the length of the pipe, its depth, access to the property, and the pipe material. We provide a detailed written estimate after a camera inspection, so the price reflects your actual line rather than a guess.
Often, yes. Trenchless work usually means less excavation, shorter projects, and lower restoration costs. Some situations still call for traditional excavation, and we’ll tell you honestly which method fits your property.
Yes. We replace residential water services and commercial water mains, along with the underground utility piping that goes with them.
Yes — underground and above-ground gas lines for both residential and commercial properties, installed to code.
Yes — commercial underground utility work is one of our primary specialties, from restaurants and apartment complexes to industrial and government facilities.
Call COR Plumbing Today
Schedule your inspection and receive a detailed evaluation with the best repair options for your property.