Drain Problems? We’ll Get to the Root of It!
From backed-up sewer lines to failing drain pipes, CPI Service delivers expert drain repair services across San Jose. Our licensed team uses advanced tools and time-tested techniques to restore your system and protect your home.
New Customers: Get 5% Off Any Service
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Coupon Rules: Must mention coupon code when scheduling an appointment. Limit 1 per household. Cannot be combined with other offers. New Customers only.
About CPI Service
When drains stop doing their job, it’s more than an inconvenience—it’s a red flag for deeper plumbing problems. At CPI Service, we specialize in diagnosing and repairing serious drain and sewer issues before they cause structural damage or hazardous backups.
Whether your system is struggling with recurring clogs, collapsed lines, invasive tree roots, or outdated piping, our expert technicians use state-of-the-art equipment to pinpoint the problem and fix it at the source. We offer everything from spot repairs and sewer video inspections to full drain repiping and trenchless sewer line replacement.
With over 30 years of experience in San Jose and the South Bay, CPI has earned a reputation for transparent service, durable repairs, and fast response times. We’re here to protect your home and your peace of mind—one drain at a time.
Drain & Sewer Repairs
We repair damaged, collapsed, or corroded drain lines with minimal disruption to your property. Whether inside your home or under the yard, we’ll restore proper flow and protect your plumbing system long-term.
Hydro Jetting
Using high-pressure water, we clear years of buildup from your pipes—grease, sludge, roots, and more. Hydro jetting restores full flow capacity and helps prevent recurring clogs without harsh chemicals.
Camera Inspections
We use advanced sewer camera technology to inspect your pipes in real-time, allowing us to diagnose cracks, root intrusion, and blockages with precision—before digging or replacing anything.
Why Choose Us?
Serious drain issues require serious expertise. CPI Service brings advanced diagnostic tools, deep plumbing experience, and a customer-first approach to every job. We don’t just patch problems—we solve them for good.
Why San Jose homeowners turn to CPI:
- Licensed, bonded, and insured drain and sewer specialists
- Advanced tools like hydro jetting and video inspection
- Honest assessments with clear, written estimates
- Full-service repairs from rooter service to pipe replacement
- Friendly, respectful pros who explain everything
- Emergency scheduling and prompt project turnaround
We fix your drains without drama—just clean, efficient service that lasts.
What Our Customers Say
Real Relief From Serious Drain Problems
At CPI Service, we help homeowners resolve complex drain issues quickly and thoroughly. Our clients appreciate our calm approach, clear communication, and reliable results—even for major sewer repairs.
EXCELLENT Based on 75 reviews Jose Cotto2025-07-13Trustindex verifies that the original source of the review is Google. Had my AC serviced…they fixed my issue and it’s running great. Tilman Wekel2025-07-10Trustindex verifies that the original source of the review is Google. Alex did an excellent job today fixing the blower wheel of our AC unit. Kevin Fukuda2025-07-09Trustindex verifies that the original source of the review is Google. Bungalow Hong was very friendly and thorough when diagnosing the problem. He was very helpful and explained everything to me. Then he was able to correct the problems quickly Heather Wilper2025-07-08Trustindex verifies that the original source of the review is Google. My service technician, Bunhak Hong, was prompt, courteous, and good at his job. I was so happy to get it repaired today. Melveta Brown2025-07-07Trustindex verifies that the original source of the review is Google. Excellent service. Arrived on time was very knowledgeable and answered all my questions. Banhak was my service tech. Bill Hubbard2025-06-27Trustindex verifies that the original source of the review is Google. I have used CPI for both commercial and residential plumbing services for over 20 years! They are the best! Eric Chan2025-06-24Trustindex verifies that the original source of the review is Google. Good Nancy DeFever2025-06-16Trustindex verifies that the original source of the review is Google. Bunhak was a wonderful technician Kartik Rao2025-06-16Trustindex verifies that the original source of the review is Google. I had a great experience with CPI. Unlike many other plumbing services, they charge a fixed price for fixing the problem — no surprise hourly charges. From the start, they were clear and transparent about the total cost, which gave me peace of mind. Most importantly, they were committed to actually solving the issue, not just diagnosing it. The plumber stayed until the job was done right, without rushing or trying to upsell unnecessary services. It's refreshing to work with a company that values quality and customer trust. Highly recommend CPI Plumbing for anyone looking for reliable and honest service. Deepthi Sai2025-06-10Trustindex verifies that the original source of the review is Google. We got a new water heater installed by CPI. Shamir came in to give the quote and explained our options and the process. Sam the plumber came in the next day and took care of the heater installation and bringing it up to latest code. Excellent work. Reasonable prices. Highly recommended!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
New Customers
5%
OFF Any Service
Coupon Rules: Must mention coupon code when scheduling an appointment. Limit 1 per household. Cannot be combined with other offers. New Customers only.
Plumbing Repair
$47
OFF
Coupon Rules: Must mention coupon code when scheduling an appointment. Limit 1 per household. Cannot be combined with other offers. New Customers only.
Video Inspection
FREE
Coupon Rules: Must mention coupon code when scheduling an appointment. Limit 1 per household. Cannot be combined with other offers. New Customers only.
FAQ
Got Questions About Drain Repairs? We’ve Got Answers
When something’s wrong below the surface, we’re here to help you get clarity—and a clean solution. Here’s what San Jose homeowners often ask when facing drain issues:
How do I know if I need a drain repair or full replacement?
Our team performs a thorough inspection using a sewer camera to determine the condition of your pipes. If the damage is localized (like a cracked section), we can repair it. If the entire line is compromised, a replacement may be recommended.
What causes recurring drain clogs?
Recurring clogs may be caused by pipe sagging (bellies), tree root intrusion, grease buildup, or improper slope. Our inspections and hydro jetting services help identify and remove the source so clogs don’t keep coming back.
What’s hydro jetting, and when is it needed?
Hydro jetting uses high-pressure water to blast through blockages and clean pipe interiors. It’s ideal for tough clogs, sewer backups, or preventive maintenance before problems escalate.
Do you handle sewer line replacements?
Yes—we offer complete sewer line replacement services using traditional and trenchless methods. We’ll evaluate your specific situation and recommend the best solution for performance and budget.
Can you fix toilets with slow draining or flushing issues?
Absolutely. Sometimes the problem isn’t the toilet—it’s the drain line behind it. We’ll determine if your toilet needs repair, replacement, or if the underlying drain requires service.
Let’s Get Things Flowing Again
You don’t have to live with gurgling pipes, frequent backups, or foul odors. CPI Service delivers fast, professional drain and sewer repairs that restore your home’s plumbing and prevent future problems.
Call today for an inspection and get your drains working like they should—quietly, cleanly, and reliably.