Serving Montclair & the Inland Empire
Licensed & Insured Honest. Reliable. Local.
Sweetwater Plumbing 💬 Text us ☎ (909) 312-4516

Commercial sewer line
repair & replacement.

Sweetwater Plumbing repairs and replaces commercial sewer laterals and main lines in Montclair and across the Inland Empire. When a line fails, we use trenchless methods where the pipe allows, to keep disruption to your operations and tenants low. Sewage backing up right now? Call (909) 312-4516; we answer calls 24/7.

Repair options

Trenchless when possible. Open-cut when needed.

  • Trenchless pipe lining (CIPP): a cured-in-place liner is inserted through existing access, and the pipe is restored without excavation. Best when the pipe is cracked or root-damaged but still holds its shape.
  • Pipe bursting: replaces the old pipe by pulling new pipe through it; requires only entry and exit pits, not a full trench.
  • Open-cut replacement: traditional excavation when access or pipe condition requires it.
  • Spot repair: repair of a single section when only one part is damaged.
Before any repair

We look first, then we recommend.

Every commercial sewer job starts with a camera inspection, so the repair matches what is actually wrong. A single cracked joint, a root-filled section, a sag that holds waste, and a line that is failing end to end each call for a different fix. You see the footage and get the options in writing, with the trade-offs of each, before any work begins.

Older commercial lines in the Inland Empire are often clay or cast iron. Clay joints let roots in, and cast iron scales and cracks from the inside. Newer buildings usually have plastic pipe, where the common problems are sags and damaged joints. Knowing which you have changes the right repair.

Working around your business

Built around your tenants and customers.

  • After-hours scheduling: we can schedule work outside your business hours to keep disruption low
  • Clear communication: property managers and owners get the findings, the options and the plan in writing
  • Background-checked technicians: every technician passes an independent background check and a psychological screening to work in high-security commercial facilities
  • Documentation: camera footage and written findings you can keep for your records, your tenants or your insurer
Service Area

Serving 24 cities across the Inland Empire.

Chino · Chino Hills · Claremont · Colton · Corona · Diamond Bar · Eastvale · Fontana · Grand Terrace · Highland · La Verne · Loma Linda · Mira Loma · Montclair · Norco · Ontario · Pomona · Rancho Cucamonga · Redlands · Rialto · Riverside · San Bernardino · San Dimas · Upland

What customers say

Real reviews from real customers.

★★★★★4.8 / 5 average
· View all 588+ Google reviews →
AA
Amber Adams
★★★★★ Mar 2025
GOOGLE

Can't say enough good things about Sweetwater Plumbing. They've serviced our drains at our car wash twice now. Their employees are all very friendly, knowledgeable and efficient. Not only were they on time but they were early! The owner, John, couldn't be…

GW
Gail Williamson
★★★★★ Dec 2025
GOOGLE

Prompt, thorough, and knowledgeable. I also like the fact that I have had technicians return after a few years and remember me and my past projects.

Common Questions

Frequently asked questions.

Do you inspect a commercial sewer line before recommending a repair?
Yes. We run a camera through the line first, so the repair matches the actual problem. You see what we see and get the options in writing before any work begins.
When is trenchless repair an option for a commercial line?
Lining works when the pipe still holds its shape and is cracked or root-damaged. Pipe bursting replaces the pipe through small access pits, and it works even when the old pipe has collapsed. If the line has a bad sag, or access rules out trenchless, open-cut repair may be the right answer. The camera inspection tells us which fits.
Can you work after hours?
Yes. We offer after-hours scheduling for commercial work, so repairs can happen when your business is closed.
Can you give us documentation for our records?
Yes. You get the camera footage and written findings, which many owners keep for tenants, buyers or insurance.
What areas do you cover for commercial sewer work?
We serve commercial properties in 24 cities across the Inland Empire. See the list of cities on this page, or call (909) 312-4516.

Related Services

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