BackflowNear Test-Due Reminder

Backflow testing in Philadelphia, PA

22 backflow testing businesses work within 25 miles of Philadelphia, 6 of them based in town. Every one is on the approved tester list of Philadelphia Water fire.

22 businesses within 25 miles

Backflow testing companies near Philadelphia

What the badges mean
✓ PA 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.

✓ PA Utility-Approved Tester Verified ★ 4.4 (77 reviews) 5 certified testersOn Philadelphia Water fire list Backflow Testing

1717 Fairmount Ave, Philadelphia, PA 19130 · 2 mi from Philadelphia

Verified Oct 2026 · Unclaimed listing

✓ PA Utility-Approved Tester Verified ★ 4.4 (7 reviews) 7 certified testersOn Philadelphia Water fire list Backflow Testing

101 E Laurel Ave #2, Cheltenham, PA 19012 · 6 mi from Philadelphia

Verified Oct 2026 · Unclaimed listing

✓ NJ Utility-Approved Tester Verified ★ 4.5 (8 reviews) 2 certified testersOn Philadelphia Water fire list Backflow Testing

1752 Crown Point Rd, West Deptford, NJ 08086 · 9 mi from Philadelphia

Verified Oct 2026 · Unclaimed listing

✓ PA Utility-Approved Tester Verified ★ 3.7 (21 reviews) On Philadelphia Water fire list Backflow Testing

7107 Rising Sun Ave, Philadelphia, PA 19111 · 6 mi from Philadelphia

Verified Oct 2026 · Unclaimed listing

✓ PA Utility-Approved Tester Verified ★ 4.9 (11 reviews) 2 certified testersOn Philadelphia Water fire list Backflow Testing

700 E Chester Pike, Ridley Park, PA 19078 · 11 mi from Philadelphia

Verified Oct 2026 · Unclaimed listing

✓ PA Utility-Approved Tester Verified ★ 4.1 (42 reviews) 22 certified testersOn Philadelphia Water fire list Backflow Testing

501 Feheley Dr, King of Prussia, PA 19406 · 13 mi from Philadelphia

Verified Oct 2026 · Unclaimed listing

✓ PA Utility-Approved Tester Verified ★ 4.8 (76 reviews) 2 certified testersOn Philadelphia Water fire list Backflow Testing

4020 West Chester Pike, Newtown Square, PA 19073 · 15 mi from Philadelphia

Verified Oct 2026 · Unclaimed listing

✓ PA Utility-Approved Tester Verified 5 certified testersOn Philadelphia Water fire list Backflow Testing

61 Wilmington West Chester Pike, Chadds Ford, PA 19317 · 23 mi from Philadelphia

Verified Oct 2026 · Unclaimed listing

✓ PA Utility-Approved Tester Verified ★ 4.3 (27 reviews) On Philadelphia Water fire list Backflow Testing

2060 Detwiler Rd Ste 111, Harleysville, PA 19438 · 22 mi from Philadelphia

Verified Oct 2026 · Unclaimed listing

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

Philadelphia Water Department: backflow test rules

  • Who must test. The regulations require a City approved backflow assembly at all domestic and fire service connections, installed by a City certified technician; an RP is generally required on domestic lines and a DC is generally allowed on fire sprinkler lines without chemicals. Source.
  • Notices and deadlines. Assemblies that fail PWD performance standards must be repaired or replaced and retested within 14 days of the first test. Source.
  • How the report is filed. Test reports are documented on the Backflow Prevention Assembly Test and Maintenance Record (Form 79-770) and must be sent within 48 hours of completion to the Industrial Waste and Backflow Compliance Unit. Source.
  • Tester registration. To be a City Certified Backflow Technician a person needs a City Master Plumbers License or City Fire Suppression Contractor License plus backflow certification from NEWWA or ASSE, then applies to the IWBC Unit (Form CR-100). Source.
  • Fees. A permit (Form CP-100) from L&I is required for any containment assembly on a City service connection, and only City Certified Backflow Technicians can apply for it. Source.

Everything about Philadelphia Water Department's backflow program

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 Philadelphia 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 Philadelphia

Who can test a backflow preventer in Philadelphia?

A tester certified as Pennsylvania's rules require, and accepted by your water utility. The companies here are on the approved list of Philadelphia Water fire: companies allowed to file backflow test reports in that system. In Philadelphia, see Philadelphia Water Department's rules below.

How many backflow testing companies serve Philadelphia?

22 companies on the approved list of Philadelphia Water fire work within 25 miles of Philadelphia, 6 of them based in town.

How often do I need a backflow test?

Most utilities require a test when the assembly is installed and then every year. Your utility's notice gives the due date and how the tester files the report.

Approved list: Philadelphia Water Department City-certified backflow technicians (fire sprinkler systems), Philadelphia Water Department.

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