The State of Indiana
requires that public water systems implement, monitor and enforce a
cross-connection control program (Title 327 IAC 8 Rule 10).
What is backflow?
It's just what it sounds like:
the water is flowing in the opposite direction from its normal flow. With the
direction of flow reversed, due to a change in pressures, backflow can allow
contaminants to enter our drinking water system through cross-connections. A
potentially hazardous cross-connection occurs every time someone uses a garden
hose sprayer to apply insecticides or herbicides to their lawn. Another cross-connection
occurs when someone uses his or her garden hose to clear a stoppage in their
sewer line. Other cross-connections can occur when someone uses his or her
garden hose to clear a stoppage in their sewer line; fill a pool while leaving
the hose in the water and having an automatic timer set on their hose.
Without a backflow prevention
device between your hose and hose bib (spigot or outside faucet), the contents
of the hose and anything it is connected to can backflow into the piping system
and contaminate your drinking water.
What harm could that
Plenty. When water is delivered
to your property it is exposed to many different types of fixtures, including
sprinklers, washing machines, hose-bibs, kitchen faucets, tubs, showers, and
toilets. For industrial users, the system may be attached to boilers, photo
processing equipment, chemical mixing tanks, chillers, water towers, pressure
pumps, healthcare and laboratory equipment, etc. Connections between the
potable water system and potential sources of pollution, or contamination, are
called "cross connections." When backflow occurs through a cross
connection, there is a chance that contaminants can be drawn into the public
When does my backflow
device need to be tested?
- Air Gaps (AG) shall be
inspected at intervals not exceeding one (1) year to ensure that they continue
to meet the requirements.
- Double Check Valve Backflow
Prevention Assembly (DC) shall be tested at intervals not exceeding one (1)
year to ensure that both check valves holds pressure at 2.0 or greater under
all pressure differentials.
- Double Check-Detector Backflow
Prevention Assembly (DCDA) shall be tested at intervals not exceeding one (1)
year to ensure that both check valves hold pressure and do not leak under all
- Pressure Vacuum Breakers (PVB)
shall be tested at intervals not to exceed six (6) months (annually, if
installed on an irrigation system) to ensure that the air inlet opens fully
when water pressure and the check valve holds closed under pressure.
Who can test these
Testers are certified by the
State of Indiana after attending a 40-hour training class, passing 2 written
examinations, and successfully completing actual tests on prevention devices.
We have two certified backflow testers on our team.
Where do you send my test
Once we complete the test
reports for properties we submit to the respective city water department.