BackflowNear Test-Due Reminder

Approved backflow testers in Martinez, CA

43 backflow testing businesses work within 25 miles of Martinez, 2 of them based in town. Every one is on the approved tester list of 15 water utilities.

43 businesses within 25 miles

Backflow testing companies near Martinez

Most of these businesses are also listed on Concord, CA.

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 Martinez? One sponsor per county, clearly labelled. Sponsor this county

Matrix

100/100
✓ CA Utility-Approved Tester Verified ★ 3.6 (43 reviews) 3 certified testersOn EBMUD listOn San Francisco authorized testersOn City of Pleasanton list Backflow Testing

115 Mason Cir, Concord, CA 94520 · 3 mi from Martinez

Call (925) 459-9200 Details Website
Verified Oct 2026 · Unclaimed listing

Landscape Care, Inc

90/100
✓ CA Utility-Approved Tester Verified ★ 4 (4 reviews) On EBMUD listOn DSRSD list Backflow Testing

4026 Pacheco Blvd, Martinez, CA 94553 · under 1 mile from Martinez

Call (925) 372-7973 Details Website
Verified Oct 2026 · Unclaimed listing

Preferred Plumbing & Drain

90/100
✓ CA Utility-Approved Tester Verified ★ 4.3 (133 reviews) On EBMUD listOn City of Pleasanton listOn City of Tracy list Backflow Testing

5600 Imhoff Dr Ste C, Concord, CA 94520 · 2 mi from Martinez

Call (925) 676-2143 Details Website
Verified Oct 2026 · Unclaimed listing

Guerra Bros Plumbing

90/100
✓ CA Utility-Approved Tester Verified ★ 4.7 (38 reviews) On EBMUD listOn San Francisco authorized testers Backflow Testing

100 Medburn St B, Concord, CA 94520 · 3 mi from Martinez

Call (925) 288-0409 Details Website
Verified Oct 2026 · Unclaimed listing

Philco Building Maint

90/100
✓ CA Utility-Approved Tester Verified ★ 3.2 (11 reviews) On EBMUD listOn DSRSD listOn City of Pleasanton listOn Alameda County Water District list Backflow Testing

1062 Shary Cir, Concord, CA 94518 · 5 mi from Martinez

Call (925) 363-7755 Details Website
Verified Oct 2026 · Unclaimed listing

Escos Fire and Safety

90/100
✓ CA Utility-Approved Tester Verified ★ 5 (12 reviews) On City of San Diego list Backflow Testing

187 Mayhew Way #C, Walnut Creek, CA 94597 · 5 mi from Martinez

Call (925) 217-0500 Details Website
Verified Oct 2026 · Unclaimed listing

The Landscape Company

80/100
✓ CA Utility-Approved Tester Verified On EBMUD list Backflow Testing

4861 Pacheco Blvd, Martinez, CA 94553 · under 1 mile from Martinez

Call (925) 228-6800 Details
Verified Oct 2026 · Unclaimed listing

Jackson & Son Plumbing

80/100
✓ CA Utility-Approved Tester Verified ★ 3.7 (3 reviews) On DSRSD listOn City of Pleasanton listOn City of Milpitas listOn City of Tracy list Backflow Testing

211 Montego Dr, Hercules, CA 94547 · 8 mi from Martinez

Call (510) 799-9800 Details
Verified Oct 2026 · Unclaimed listing

City Mechanical Inc.

90/100
✓ CA Utility-Approved Tester Verified ★ 2.8 (12 reviews) On EBMUD listOn San Francisco authorized testersOn DSRSD list Backflow Testing

724 Alfred Nobel Dr, Hercules, CA 94547 · 10 mi from Martinez

Call (510) 724-9088 Details Website
Verified Oct 2026 · Unclaimed listing

L J Kruse Company

90/100
✓ CA Utility-Approved Tester Verified ★ 4.9 (327 reviews) On EBMUD listOn San Francisco authorized testersOn Alameda County Water District list Backflow Testing

920 Pardee St, Berkeley, CA 94710 · 15 mi from Martinez

Call (510) 644-0260 Details Website
Verified Oct 2026 · Unclaimed listing

The Backflow Pro, Inc.

90/100
✓ CA Utility-Approved Tester Verified On EBMUD listOn San Francisco authorized testersOn City of Napa listOn DSRSD listOn City of Pleasanton listOn City of Lathrop listOn City of Milpitas listOn Alameda County Water District listOn North Marin Water District listOn City of Palo Alto listOn City of Tracy listOn City of Petaluma list Backflow Testing

360 Grand Ave #153, Oakland, CA 94610 · 16 mi from Martinez

Call (800) 511-2210 Details Website
Verified Oct 2026 · Unclaimed listing

Malcolm Plumbing & Mechanical

100/100
✓ CA Utility-Approved Tester Verified ★ 4.8 (54 reviews) 2 certified testersOn San Francisco authorized testers Backflow Testing

184 Mendell St, San Francisco, CA 94124 · 24 mi from Martinez

Call (415) 621-1985 Details Website
Verified Oct 2026 · Unclaimed listing

AAA Backflow Testing LLC

100/100
✓ CA Utility-Approved Tester Verified ★ 5 (3 reviews) 2 certified testersOn San Francisco authorized testers Backflow Testing

3450 Sacramento St #357, San Francisco, CA 94118 · 25 mi from Martinez

Call (415) 535-1332 Details Website
Verified Oct 2026 · Unclaimed listing

Carrier Commercial Svcs

90/100
✓ CA Utility-Approved Tester Verified ★ 1.8 (5 reviews) On EBMUD listOn San Francisco authorized testers Backflow Testing

600 McCormick St B, San Leandro, CA 94577 · 20 mi from Martinez

Call (510) 347-2000 Details Website
Verified Oct 2026 · Unclaimed listing

ACCO Engineered Sys

90/100
✓ CA Utility-Approved Tester Verified ★ 4.3 (6 reviews) On EBMUD listOn San Francisco authorized testers Backflow Testing

1133 Aladdin Ave, San Leandro, CA 94577 · 21 mi from Martinez

Call (800) 598-2226 Details Website
Verified Oct 2026 · Unclaimed listing

Proper Plumbing Services

90/100
✓ CA Utility-Approved Tester Verified On EBMUD listOn DSRSD listOn City of Pleasanton list Backflow Testing

3185 Castro Valley Blvd, Castro Valley, CA 94546 · 21 mi from Martinez

Call (415) 837-8727 Details Website
Verified Oct 2026 · Unclaimed listing

Thorpe Design Inc

90/100
✓ CA Utility-Approved Tester Verified ★ 3.9 (21 reviews) On EBMUD listOn Sacramento County certifiedOn San Francisco authorized testersOn DSRSD listOn Diablo Water District listOn City of Pleasanton listOn City of Tracy list Backflow Testing

410 Beatrice Ct A, Brentwood, CA 94513 · 22 mi from Martinez

Call (925) 848-6432 Details Website
Verified Oct 2026 · Unclaimed listing

Bay Area Backflow Inc

90/100
✓ CA Utility-Approved Tester Verified ★ 5 (4 reviews) On City of Pleasanton listOn City of Tracy list Backflow Testing

Dublin, CA 94568, Dublin, CA 94568 · 22 mi from Martinez

Call (925) 829-3183 Details Website
Verified Oct 2026 · Unclaimed listing

Marin Mechanical

90/100
✓ CA Utility-Approved Tester Verified ★ 5 (5 reviews) On San Francisco authorized testersOn North Marin Water District list Backflow Testing

3100 Kerner Blvd # B1, San Rafael, CA 94901 · 23 mi from Martinez

Call (415) 485-4472 Details Website
Verified Oct 2026 · Unclaimed listing

All Star Plumbing

90/100
✓ CA Utility-Approved Tester Verified ★ 4.9 (145 reviews) On City of Napa list Backflow Testing

325 3rd St, Napa, CA 94559 · 23 mi from Martinez

Call (707) 226-9502 Details Website
Verified Oct 2026 · Unclaimed listing

Price reports

What a backflow test costs in Martinez

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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 Oakland and San Francisco: every utility's rules, filing portals and published prices in one place.

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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 Martinez 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 Martinez

Where are the backflow testing businesses listed for Martinez based?

43 backflow testing businesses are listed within 25 miles of Martinez. 2 are based in Martinez itself, 10 more within 15 miles and 31 further out, up to 25 miles away. Other towns with more than one listing: San Francisco (10), Concord (4) and San Leandro (4). The closest is Landscape Care, Inc, under 1 mile from Martinez.

Which tester lists are the businesses near Martinez on?

Every one is on the approved tester list of 15 water utilities.

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

30 of the 43 listed for Martinez have 3 or more Google reviews. Ace Plumbing & Rooter has the most reviews, 1,179, with an average of 4.9 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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