Residential and Commercial Plumbing Lathrop, CA
Running a business means you can’t afford downtime from plumbing problems. That’s why Knights Plumbing & Drain is to the rescue for commercial plumbing in Lathrop. With over 30 years of experience, we deliver fast, reliable solutions for offices, restaurants, warehouses, and retail spaces — all backed by upfront pricing and our Happy Today or You Don’t Pay Guarantee.
Our Plumbing Services in Lathrop
Burst Pipe Repair
Fast, expert pipe repairs to stop leaks and prevent water damage in Lathrop homes.
Gas Line Leak Detection & Repair
Licensed specialists provide accurate detection and safe, lasting repairs.
Leak Detection
Advanced tools to find hidden leaks before they cause costly water damage.
Slab Leak Repair
Professional repairs to protect your foundation and keep your home safe.
Commercial Plumbing
Complete plumbing services for Lathrop businesses, including offices, warehouses, and restaurants.
- Our Offers
Plumbing Coupons and Special Offers
We believe every customer deserves high-quality plumbing at a fair price. Take advantage of our current coupons to save instantly on essential services:
$15 OFF
ANY DRAIN CLEANING SERVICE
Coupon must be presented at the time of service and cannot be combined with other offers.
$15 OFF
ANY PLUMBING REPAIR SERVICE
Save on common repairs like leaks, clogs, or fixture replacements.
$15 OFF
ANY WATER HEATER (INSTALLED)
Upgrade to a new water heater and enjoy instant savings.
- plumbing service company
Main Services We Cover
- 5-Star Reviews
Over 3k Positive Reviews From Our Clients
EXCELLENT Based on 542 reviews Posted on E XTrustindex verifies that the original source of the review is Google. We always request Joe to service our home because he is very professional and knowledgeable! He’s also quick and cleans after his service!Posted on Vikki FrazierTrustindex verifies that the original source of the review is Google. As always (we live in an old house) Knights Plumbing are our go to plumbers. Always respectful and in good moods. Today it was Victor’s turn to tackle roots in the pipes. Fast, professional and overall a great guy. He was informative without being pushy about our pipe and tree situation (we do know it’s not great) 5/5 stars. Thanks VictorPosted on Diana GillisTrustindex verifies that the original source of the review is Google. Victor was amazing. Very professional and personable. He explained everything so that I could understand. His workmanship is great and was done in a timely manner. I would trust him with all future work. Thanks Victor...you're the best and I love your friendly personality.Posted on B. J.Trustindex verifies that the original source of the review is Google. Victor is an awesome plumber. He has excellent plumbing and customer service skills, and is very efficient and clean. He fixes any plumbing issues I ever had every time the first time. Highly recommend Victor to anyone who expects a professional plumber!Posted on Elena SanchezTrustindex verifies that the original source of the review is Google. Our technician Victor did a fantastic job of running his cable and camera in our sewer line. He unclogged our blockage, fast and efficiently. He was very respectful. I would recommend this company to anyone who’s looking for plumbing services.. Leslie took our phone call and he got someone to us in less than an hour! It wasn’t expensive for the amount of work that was done .If I could give this company more stars, I would.Posted on Jose RanesesTrustindex verifies that the original source of the review is Google. Victor was on time and knowledgeable tech and gave me alot of information about tankless water heatersPosted on Jake HaigTrustindex verifies that the original source of the review is Google. Michael was the service technician that helped me out and he was very thorough and neat with his work. He made sure his work was done correctly and was very communicative with his process during installation and through their office. Would recommend again.Posted on J DTrustindex verifies that the original source of the review is Google. Very pleased with the service. Technician Michael was just awesome. Well versed, polite and helpful. Definitely recommend to all!
Common Plumbing Issues in Lathrop Businesses
Lathrop’s fast-growing mix of residential and commercial properties brings unique plumbing challenges:
- Clogged Drains & Grease Buildup – Restaurants and commercial kitchens often face frequent clogs. Prevention Tip: Schedule regular hydro-jetting and grease trap maintenance.
- Pipe Leaks in Industrial Buildings – Warehouses and commercial sites may face slab leaks or pipe corrosion. Prevention Tip: Annual video inspections catch problems before they shut down operations.
- Hard Water Damage – Like much of the Central Valley, Lathrop water contains minerals that shorten appliance lifespan. Prevention Tip: Install a water softener or filtration system for long-term savings.
- Water Heater Demands – Businesses with heavy hot water use need durable systems. Prevention Tip: Tankless or heat pump water heaters are efficient options, with annual maintenance to prevent breakdowns.
- Serving the Central Valley
Our Service Area
Affordable Plumbing for Everyone
Plumbing Specials & Coupons
Save instantly on everyday plumbing services.
Flexible Financing
Easy payment options so you don’t have to delay important repairs or upgrades.
Royalty Club Membership
Exclusive perks like discounts, inspections, annual water heater flushes for members.
- Our Process
Plumbing Rescue in 4 Easy Steps
Step 1
Call or Schedule Online
Book your plumbing service with ease.
Step 2
Upfront Estimate
Get a transparent quote before work begins.
Step 3
Expert Service
Our plumbers complete the job right the first time.
Step 4
Guaranteed Satisfaction
If you’re not happy, you don’t pay.
- go to plumbing service company
Why Choose Knights Plumbing
- 30+ Years Serving Lathrop & the Central Valley
- Commercial & Residential Plumbing Expertise
- Happy Today or You Don’t Pay Guarantee
- Certified, Licensed & Drug-Free Technicians
- Same-Day Service Available
- 24/7 Emergency Plumbing for Club Royalty Members Only
- Thousands of 5-Star Reviews
- Our Work
Latest Projects
With more than 30 years of experience, we’re proud to be recognized as the best plumbing contractor for remodeling projects in the Central Valley. From kitchens and bathrooms to full commercial build-outs, we deliver expert plumbing, dependable service, and lasting results that bring your remodeling vision to life.

Nice Water Heater Swap Stockton, CA
Knights Plumbing and Drian responded to a service request regarding a water heater not producing hot water in Stockton, CA. Upon arrival, the Plumber met with the customer

50-Gallon Water Heater Replacement in Manteca, CA
The team at Knights Plumbing & Drain was recently called to a home in Manteca, where the customer was experiencing issues with their aging State

40-Gallon Rheem Water Heater Installation
Knights Plumbing and Drain responded to a service request in Modesto, CA, regarding a 40-gallon Water Heater that was not working correctly, leaving the customers with
- FAQS
FAQs About Commercial Plumbing in Lathrop
Yes — but emergency service is only available for Club Royalty members, who enjoy 24/7 response, free annual inspections, and priority scheduling.
Costs depend on the scope of work. Small repairs may cost a few hundred dollars, while larger projects like trenchless sewer repair or repiping are more. We always provide clear, upfront estimates.
Yes. We provide complete plumbing installation for new builds, tenant improvements, and remodeling projects.
We work with restaurants, offices, warehouses, retail spaces, and residential communities.
Absolutely. While we specialize in commercial plumbing, we also serve homeowners with repairs, installations, and maintenance.
Clogged drains, slab leaks, water heater problems, and hard water damage are the issues we see most often in local businesses.
Yes. Through GreenSky, we provide flexible financing for larger projects like repiping, remodels, or major system installations.
Yes. Root intrusion can cause backups in sewer lines. We use video inspections and hydro-jetting to detect and clear blockages.
You’re fully protected by our Happy Today or You Don’t Pay Guarantee.