BackflowNear Test-Due Reminder

Approved backflow testers in Rancho Cucamonga, CA

35 backflow testing businesses work within 25 miles of Rancho Cucamonga, 3 of them based in town. Every one is on the approved tester list of 17 water utilities.

35 businesses within 25 miles

Backflow testing companies near Rancho Cucamonga

What the badges mean
✓ CA Utility-Approved Tester Verified On the city list
The company is on a water utility's own approved list (the second badge names the list). That is the utility's approval, not a state license, and it counts for that utility.
3 certified testers
How many certified testers the roster lists at this business.
★ 4.8 (25 reviews)
The Google rating, shown as Google reports it. It does not change the order.

Order is by our quality score, never by payment. How we verify listings.

Are you a backflow testing company near Rancho Cucamonga? One sponsor per county, clearly labelled. Sponsor this county

✓ CA Utility-Approved Tester Verified ★ 4 (6 reviews) On Riverside Public Utilities listOn Cucamonga Valley Water District listOn City of Redlands listOn Western Water listOn Rancho California Water District list Backflow Testing

7201 Amethyst Ave, Rancho Cucamonga, CA 91701 · under 1 mile from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 5 (437 reviews) On Cucamonga Valley Water District list Backflow Testing

9350 Base Line Rd Ste c, Rancho Cucamonga, CA 91701 · under 1 mile from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.4 (30 reviews) On Cucamonga Valley Water District list Backflow Testing

10350 Base Line Rd, Rancho Cucamonga, CA 91701 · 1 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.9 (7 reviews) On Riverside Public Utilities listOn Cucamonga Valley Water District listOn Yorba Linda Water District list Backflow Testing

4934 Rosewood St, Montclair, CA 91763 · 7 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4 (27 reviews) On Riverside Public Utilities listOn Cucamonga Valley Water District list Backflow Testing

4329 E State St, Montclair, CA 91763 · 8 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.7 (13 reviews) On Long Beach listOn IRWD listOn Riverside Public Utilities listOn EVMWD listOn West Valley Water District listOn Cucamonga Valley Water District listOn La Puente Valley County Water District listOn City of Redlands listOn Yorba Linda Water District listOn Western Water list Backflow Testing

4774 Murrieta St #13, Chino, CA 91710 · 10 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified On Cucamonga Valley Water District listOn City of Redlands listOn Yorba Linda Water District listOn Rancho California Water District list Backflow Testing

2834 Hamner Ave #410, Norco, CA 92860 · 14 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4 (29 reviews) On Riverside Public Utilities listOn EVMWD listOn City of Redlands listOn Western Water list Backflow Testing

10910 Hole Ave, Riverside, CA 92505 · 16 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.4 (15 reviews) On Riverside Public Utilities listOn Cucamonga Valley Water District listOn City of Redlands listOn Yorba Linda Water District list Backflow Testing

E & F, 575 W Birch Ct #575, Colton, CA 92324 · 16 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.8 (170 reviews) On Riverside Public Utilities listOn Cucamonga Valley Water District listOn City of Redlands list Backflow Testing

4063 Brockton Ave, Riverside, CA 92501 · 16 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified #AWWA #18786 ★ 5 (356 reviews) On IRWD listOn Riverside Public Utilities listOn EVMWD listOn Cucamonga Valley Water District listOn City of Redlands list Backflow Testing

791 Allen Dr, Corona, CA 92879 · 16 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.9 (51 reviews) On Riverside Public Utilities list Backflow Testing

4193 Flat Rock Rd Ste 200, Office 258, Riverside, CA 92505 · 16 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified On Cucamonga Valley Water District listOn Sweetwater Authority listOn Goleta Water District listOn Rancho California Water District list Backflow Testing

274 E Rowland St B, West Covina, CA 91791 · 17 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 5 (71 reviews) On Riverside Public Utilities listOn City of Redlands listOn Rancho California Water District list Backflow Testing

9840 Indiana Ave #6, Riverside, CA 92503 · 17 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.9 (146 reviews) On Riverside Public Utilities listOn EVMWD listOn Western Water listOn Rancho California Water District list Backflow Testing

6956 Indiana Ave #4, Riverside, CA 92506 · 17 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified On City of San Diego listOn Riverside Public Utilities listOn Cucamonga Valley Water District listOn Otay Water District listOn Sweetwater Authority listOn Olivenhain list Backflow Testing

5053 La Mart Dr Unit 203, Riverside, CA 92507 · 19 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 3.9 (12 reviews) On Long Beach listOn IRWD listOn Riverside Public Utilities listOn EVMWD listOn West Valley Water District listOn La Puente Valley County Water District listOn City of Redlands listOn Western Water list Backflow Testing

3424 Del Rosa Ave N, San Bernardino, CA 92404 · 20 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified On Riverside Public Utilities listOn EVMWD listOn Cucamonga Valley Water District listOn City of Redlands listOn Western Water list Backflow Testing

4051 Center Ave, Norco, CA 92860 · 13 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.1 (7 reviews) On Riverside Public Utilities listOn West Valley Water District list Backflow Testing

11626 Sterling Ave D, Riverside, CA 92503 · 17 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified On Rancho California Water District list Backflow Testing

14430 Laurel Dr, Riverside, CA 92503 · 20 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing

Meier Plumbing

100/100
✓ CA Utility-Approved Tester Verified #AWWA #20038 ★ 3.6 (13 reviews) 2 certified testersOn IRWD listOn Yorba Linda Water District list Backflow Testing

3870 Eagle Dr, Anaheim, CA 92807 · 23 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 5 (789 reviews) On Yorba Linda Water District list Backflow Testing

8642 Bridle Cir, Yorba Linda, CA 92886 · 21 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 5 (4 reviews) On Riverside Public Utilities listOn EVMWD list Backflow Testing

231 Alessandro Blvd # A, Riverside, CA 92508 · 21 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified On Riverside Public Utilities listOn EVMWD listOn Rancho California Water District list Backflow Testing

21951 Winding Rd, Moreno Valley, CA 92557 · 22 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.9 (142 reviews) On Riverside Public Utilities list Backflow Testing

4320 E Miraloma Ave, Anaheim, CA 92807 · 22 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.2 (10 reviews) On Riverside Public Utilities listOn West Valley Water District listOn Cucamonga Valley Water District listOn City of Redlands listOn Western Water list Backflow Testing

Highland, CA 92346, Highland, CA 92346 · 22 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.1 (23 reviews) On City of Redlands list Backflow Testing

500 Iowa St, Redlands, CA 92373 · 22 mi from Rancho Cucamonga

Verified Oct 2026 · Unclaimed listing

Price reports

What a backflow test costs in Rancho Cucamonga

Not enough reports yet for Rancho Cucamonga to show a range. Be one of the first: it takes a minute and stays anonymous.

Published prices nationwide

$29.99 to $100 per assembly

Based on 14 published prices · Read Oct 2026 Prices testing businesses list on their own websites, from our cost guide. Listed prices, not what people paid.

Every published price, with its source: what a backflow test costs.

Failed test? Published repair, rebuild and replacement prices: what a backflow repair or replacement costs.

Had your backflow test done? Share what you paid to see local prices.

Metro guide: Backflow testing in Riverside and the Inland Empire: every utility's rules, filing portals and published prices in one place.

Never miss your annual backflow test

Most water utilities require the backflow assembly on an irrigation, fire or commercial line to be tested every year, and a missed test can mean a shutoff notice. Tell us when yours was last tested in Rancho Cucamonga and we'll text you a month before it is due, with certified local testers ready to book.

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Backflow testing questions in Rancho Cucamonga

Where are the backflow testing businesses listed for Rancho Cucamonga based?

35 backflow testing businesses are listed within 25 miles of Rancho Cucamonga. 3 are based in Rancho Cucamonga itself, 6 more within 15 miles and 26 further out, up to 23 miles away. Other towns with more than one listing: Riverside (9), Anaheim (3) and Brea (2). The closest is Advanced Environmental Landscape, under 1 mile from Rancho Cucamonga.

Which tester lists are the businesses near Rancho Cucamonga on?

Every one is on the approved tester list of 17 water utilities.

How many of the backflow testing businesses near Rancho Cucamonga have Google reviews?

29 of the 35 listed for Rancho Cucamonga have 3 or more Google reviews. Coast Plumbing has the most reviews, 789, with an average of 5 stars, as Google showed them at our last check.

Approved list: City of San Diego approved backflow testers, City of San Diego Public Utilities Department.

Approved list: Sweetwater Authority certified backflow testers, Sweetwater Authority.

Approved list: Cucamonga Valley Water District backflow assembly testers list, Cucamonga Valley Water District.

Approved list: Otay Water District approved backflow prevention assembly testers, Otay Water District.

Approved list: EVMWD backflow tester list, Elsinore Valley Municipal Water District.

Approved list: Ventura County certified backflow device tester list, County of Ventura Resource Management Agency.

Approved list: Yorba Linda Water District backflow prevention device testers, Yorba Linda Water District.

Approved list: Riverside Public Utilities backflow tester list, Riverside Public Utilities.

Approved list: City of Redlands backflow tester list (BSI), City of Redlands Municipal Utilities.

Approved list: Western Municipal Water District certified backflow prevention testers, Western Municipal Water District.

Approved list: Rancho California Water District approved backflow testers, Rancho California Water District.

Approved list: Sacramento County certified backflow prevention assembly testers, Sacramento County Environmental Management Department.

Approved list: Olivenhain Municipal Water District certified backflow prevention assembly testers, Olivenhain Municipal Water District.

Approved list: EBMUD approved backflow testers, East Bay Municipal Utility District.

Approved list: Irvine Ranch Water District backflow tester list, Irvine Ranch Water District.

Approved list: San Francisco authorized backflow assembly testing companies, San Francisco Department of Public Health.

Approved list: Padre Dam Municipal Water District approved backflow tester list, Padre Dam Municipal Water District.

Approved list: DSRSD backflow tester list, Dublin San Ramon Services District.

Approved list: City of Palo Alto approved backflow testers, City of Palo Alto Utilities.

Approved list: City of Pleasanton approved backflow prevention testers, City of Pleasanton Water.

Approved list: Certified Backflow Prevention Device Testers, Los Angeles County Public Health.

Approved list: Casitas Municipal Water District approved certified backflow device testers, Casitas Municipal Water District.

Approved list: City of Milpitas qualified backflow prevention assembly testers, City of Milpitas.

Approved list: City of Tracy approved backflow testers, City of Tracy Public Works.

Approved list: City of Long Beach backflow prevention testers, Long Beach Health.

Approved list: City of Ceres certified backflow tester list, City of Ceres.

Approved list: City of Petaluma city certified backflow testers, City of Petaluma.

Approved list: City of Clovis certified backflow testers, City of Clovis Public Utilities.

Approved list: Goleta Water District certified backflow tester listing, Goleta Water District.

Approved list: City of Napa certified backflow prevention testers, City of Napa Utilities.

Approved list: La Puente Valley County Water District approved list of backflow testers, La Puente Valley County Water District.

Approved list: Alameda County Water District approved backflow prevention testers, Alameda County Water District.

Approved list: West Valley Water District backflow tester list, West Valley Water District.

Approved list: Rainbow Municipal Water District certified backflow vendor list, Rainbow Municipal Water District.

Approved list: City of Lathrop approved backflow testers, City of Lathrop Public Works.

Approved list: North Marin Water District backflow assembly tester list, North Marin Water District.

Approved list: Calaveras County Water District recognized BPA testers, Calaveras County Water District.

Approved list: Diablo Water District list of certified backflow testers, Diablo Water District.

Approved list: Forestville Water District approved certified backflow device testers, Forestville Water District.

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