Del-Co Water Company: backflow testing rules

Who must test

• Customers should have each backflow assembly inspected every year by a certified inspector, repair any that fail, and send the annual inspection reports to Del-Co Water. Source.

How the report is filed

• Registered testers submit test reports through Del-Co's GIS map portal, either by uploading the passing report or filling in the online form, and can search by address, serial number or asset number. Source.

Tester registration

• Testers return a tester data sheet, their Ohio Department of Commerce certification and the test kit calibration by email; once everything is received they get a login for the system. Source.

Fees

• The annual registration fee is $200.00 per tester, paid by check or cash. Source.

Approved testers

• Del-Co keeps a list of registered testers on its website for customers choosing a tester. Directory: delcowater.org (not downloaded). Source.

Program

• Del-Co follows Ohio Administrative Code Chapter 3745-95: where a hazard exists at a service connection, the customer must install and maintain an appropriate backflow preventer at the meter or at the hazard. Source.

How to file your backflow test with Del-Co Water Company

1. Read your notice. It names the assembly, its location and the date the report is due.
2. Book a tester Del-Co Water Company accepts. See finding a tester below; book early so there is time to repair a failed assembly.
3. The tester tests the assembly and fills in the test report. A failed assembly is repaired and tested again.
4. The report is filed. Registered testers submit test reports through Del-Co's GIS map portal, either by uploading the passing report or filling in the online form, and can search by address, serial number or asset number.Source.
5. Fees. The annual registration fee is $200.00 per tester, paid by check or cash. Source.
6. Keep a copy and set a reminder for next year. Set a free test-due reminder.

Finding a tester Del-Co Water Company accepts

Del-Co Water Company keeps its register of testers in an online lookup on delcowater.org. We link it and do not copy it, because it changes as testers register. Open the lookup. The testers on this site hold a state certificate; registration with Del-Co Water Company is a separate step.

Before you book, ask the tester:

• Are you registered with Del-Co Water Company?
• Will you send the test report to the utility for me, and how?
• When is my report due? The date is on your notice; the tester needs time to test, repair if needed and file.

Other water utilities in Ohio

• Cleveland Water
• City of Columbus Division of Water
• Greater Cincinnati Water Works
• City of Canton Water Department
• City of Dayton Water
• City of Toledo Division of Water

Read October 6, 2026. Program page: delcowater.org.

Backflow testers near Delaware

What the badges mean

✓ OH Certified Backflow Tester Verified

A state roster lists at least one certified tester at this business, with a current certificate. The state sets the exam and renewal.

✓ OH 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.

All testers near Delaware · Ohio roster