Dale Plumbing, Redwood City, CA: Backflow Testing

Approvals

✓ On the City of Palo Alto list Phone matches its Google profile

City of Palo Alto approved backflow testers, as of August 10, 2026. Being on this list means the utility lets the company file backflow test reports in its water system; it is not a state license.

Certified tester	Certificate
Samuel Kerrigan
Andrew Verna

Ask for the certificate number of the tester who will do your test, and check that your own water utility accepts reports from this company.

Call (650) 366-4675 Visit website More testers in California

Price reports

What a backflow test costs in Redwood City

Not enough reports yet for Redwood City 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

$0$25$50$75$100$125

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.

Where you will find Dale Plumbing

These are the city pages close enough for this business to appear on.

Other backflow testers nearby

Business	Services	Distance
Roto Rooter	Backflow Testing	4 mi
Dittmann Plumbing	Backflow Testing	8 mi
Loral Landscaping	Backflow Testing	9 mi
Above All Plumbing	Backflow Testing	10 mi
Master Plumbing	Backflow Testing	11 mi
Skaates Inc.	Backflow Testing	12 mi

Questions about Dale Plumbing

Is Dale Plumbing approved to test backflow assemblies?

Dale Plumbing is on the City of Palo Alto list, as of August 10, 2026. That means the utility lets the company file backflow test reports in its system; it is not a state license. Ask for the tester's certificate number before the test.

What does Dale Plumbing do?

Their listing covers backflow testing. Call to confirm the service you need, because offerings change.

What areas does Dale Plumbing serve?

They are based in Redwood City, California, within driving distance of San Mateo, Sunnyvale, Burlingame, Hayward, South San Francisco. Service areas are set by the business, so confirm yours when you call.

How do I reach Dale Plumbing?

Call (650) 366-4675. Their website is linked on this page.

Compiled from public records and public business information. Not an endorsement. Check licensing before you hire.

Is this your business?

Claim this listing free: add the utilities you file with, your service area and your residential test price, and get annual test-due requests from property owners.

Claim this listing