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

Commercial plumbing
from urgent repairs to full installations.

When plumbing trouble hits your business, every hour matters, and we are here to keep you running. We serve restaurants, retail, multi-unit residential, hotels, office buildings, warehouses, and light industrial properties throughout the Inland Empire, with reliable 24/7 response, after-hours scheduling around your operating hours, and full installations done right the first time.

Properties we service

Commercial properties we service.

  • Restaurants: high-volume systems, commercial dishwashers, ice machines, beverage lines
  • Retail and shopping centers: public restrooms, drinking fountains, employee break rooms
  • Multi-family residential: apartments, condos, and HOAs, both common-area plumbing and unit-specific service
  • Hotels and motels: guest room plumbing, laundry facilities, kitchen drain maintenance
  • Office buildings: restrooms, break rooms, fire suppression coordination
  • Warehouses and light industrial: process water, washdown stations, specialty drainage
  • Schools and institutional: high-traffic restrooms, kitchens, athletic facilities
Commercial services

Specialized commercial plumbing services.

Whatever your property needs, we are glad to help. Explore the commercial services we provide most often:

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

Recent jobs like this

Real commercial plumbing work from our crews.

See all recent jobs →
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…

TP
Troy Pham
★★★★★ May 2026
GOOGLE

I would like to recognize Freddy Lopez for the outstanding service and professionalism he provided. Freddy demonstrated excellent communication, attention to detail, and a strong commitment to customer satisfaction throughout the entire process. He was…

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.

How much does commercial plumbing cost in the Inland Empire?
We look at the job first, then give you your options in writing before any work begins, each with one flat-rate price. The price you approve is the price you pay. Our customers tell us our pricing is honest and fair.
Are you licensed for commercial plumbing in California?
Yes. Sweetwater Plumbing is a licensed C-36 Plumbing Contractor (California CSLB #889182), fully bonded with $2M general liability insurance.
Where do you offer commercial plumbing?
We provide commercial plumbing throughout the Inland Empire, including Montclair, Ontario, Upland, Rancho Cucamonga, Chino, Chino Hills, Pomona, Claremont, Fontana, Riverside, and 14 other cities. Call (909) 312-4516 to confirm coverage.
Can you provide a certificate of insurance?
Yes. We can send a certificate of insurance to you or your property management company before work starts. Sweetwater Plumbing carries $2M in general liability insurance.
Do you work with purchase orders and invoicing?
Yes. We work with purchase orders and invoice businesses and property managers directly.
(909) 312-4516 Text us