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Backflow testing, by water system

Your backflow assembly is not governed by the fire department or by the state. It is governed by whoever sells you water — and every water system sets its own deadline, its own forms and its own list of testers it will accept. Find yours below.

Water systems we cover

Not sure which one supplies your building? It is on your water bill. Or call us on (614) 526-4995 and we will work it out from the address.

City of Columbus, Columbus Water & Power
Columbus · Dublin · Hilliard · Grove City · Gahanna and 9 more
Del-Co Water Company
Powell · Lewis Center · Sunbury · Galena · Ostrander and 3 more
Aqua Ohio — Marion
Marion · La Rue
City of Zanesville Water Department
Zanesville
City of Wooster Water Department
Wooster
Muskingum County Water Department
Muskingum County rural areas
Aqua Ohio — Franklin County systems
Blacklick · Huber Ridge · Lake Darby · Worthington Hills · Timberbrook
City of Ashland Water Department
Ashland
City of Pickerington Water Department
Pickerington
Licking Regional Water District
Licking County rural areas · Hebron area
City of Bucyrus Water Department
Bucyrus
Jefferson Water and Sewer District
Jefferson Township · Blacklick area
Earnhart Hill Regional Water and Sewer District
Ashville · Commercial Point · South Bloomfield · Pickaway County rural
City of Pataskala Water Department
Pataskala
City of Orrville Water Department
Orrville
Knox County Water and Wastewater
Knox County rural areas · Apple Valley
City of Ontario Water Department
Ontario
Village of Granville Water Department
Granville
City of Johnstown Water Department
Johnstown
Village of Millersport Water Department
Millersport · Buckeye Lake area
Village of Millersburg Water Department
Millersburg
Village of Baltimore Water Department
Baltimore · Thurston
City of Circleville Water Department
Circleville
City of Coshocton Water Department
Coshocton
City of Delaware Water Department
Delaware
Fairfield County Utilities
Pickerington area · Violet Township · Bloom Township
City of Heath Water Department
Heath
City of Lancaster Water Department
Lancaster
City of London Water Department
London
City of Mansfield Water Department
Mansfield
City of Marysville Water Department
Marysville
Village of Mount Gilead Water Department
Mount Gilead
City of Mount Vernon Water Department
Mount Vernon
City of Newark Water Department
Newark
Southwest Licking Community Water and Sewer District
Pataskala · Etna · Kirkersville
City of Westerville Water Division
Westerville

What every water system has in common

Annual testing, nearly everywhere

Ohio EPA requires a containment assembly to be tested at installation, after any repair, and at least once every twelve months. Your purveyor can ask for more often, and some do.

The tester has to be one they accept

The rule is that testing is done by someone approved by the supplier of water and acceptable to Ohio EPA. In practice most systems keep their own list, and a test by someone not on it does not count.

The result has to reach them

A test nobody filed is a test that did not happen as far as your water company is concerned. We file the result with the purveyor rather than handing you a form to post on.

A failure starts a clock

Fail a test and you usually have a short window to repair and retest before the water company acts. We carry rebuild kits for the common assemblies, so a failure is often fixed on the same visit.

Assemblies we test and repair

  • Reduced pressure zone assemblies (RPZ)
  • Double check valve assemblies (DCVA)
  • Double check detector assemblies (DCDA) on fire lines
  • Reduced pressure detector assemblies (RPDA)
  • Pressure vacuum breakers (PVB)
  • Lawn irrigation assemblies

Communities on these systems include Apple Valley, Ashland, Ashley, Ashville, Baltimore, Bexley, Blacklick, Blacklick area, Bloom Township, Buckeye Lake area, Bucyrus, Canal Winchester and more. More about how we test →