Summit Park PSD's Cross-Connection Control program exists to protect our public water system against potential     contamination from backflow. 

Backflow is the reversal of the normal flow of water.  It can happen when a drastic change in water pressure occurs.

It is a source of contamination is connected to a plumbing system when backflow occurs--such as a fertilizer dispenser on a hose--those contaminants could be siphoned back into the home or building's plumbing system, and potentially, our public water lines.

That's why state and federal regulations require water systems to identify cross connections between the public water system and private plumbing systems and take steps to prevent backflow through these cross connections.

Click this link to watch a short video explaining backflow
Brought to you by Charleston Water System, Charleston SC.

Our Backflow Requirements

Summit Park PSD requires customers, whose operations present a potential backflow hazard to install, maintain and annually test a backflow prevention assembly that meets state and federal specifications.

Our staff along with certified inspectors indentify customer connections that may present a backflow hazard, such as businesses, manufacturing facilities, and in-ground irrigation systems.  We then contact those customers and ask them to complete a form that provides the information we need to determine the degree of backflow hazard and what type of backflow prevention device should be installed.

Summit Park PSD does not install or test backflow preventers.  Customers are responsible for having backflow preventers installed according to our specifications and tested annually by a state certified tester.

Frequently Asked Questions

What is cross connection?
A cross connection is a link between a potable water system and a non-potable water system--in our case, Summit Park's public water lines and our customers' private plumbing systems. Backflow can occur throught cross-connections.

Click this link for more details provided by West Sound Utility District

What is backflow?
Backflow is the reveral of the normal flow of water. It can happen as a result of water pressure differences or sudden changes in pressure and can allow contaminants to be siphoned back into buildings' plumbing systems, and potentially, the public water supply.  There are two types of backflow - back pressure backflow and back siphonage backflow.

What can cause backflow?
Backflow can be caused by a sudden drop in pressure in a public water main, which can create a sub-atmospheric condition.  

For example, if a drop in pressure occurs while a hose is in a bucket of dirty water, that water could be sucked back into the home or building's plumbing system, and into the public water system, potentially contaminating the water for other users.  A drop in pressure could be caused by a variety of things, including a water main break, hydrant flushing, etc. 
Backflow preventers keep this from happening.

What does Summit Park PSD do to prevent backflow?
Summit Park PSD has installed and continues to install dual check valves in customers meter wells.  Summit Park PSD also requires a testable backflow prevention assembly appropriate for the degree of hazard.  Backflow prevention assemblies prevent water from re-entering the public water supply during a loss of system pressure.

What can I do to prevent backflow?
You can prevent backflow in your home plumbing system by installing an inexpensive hose-bib vacuum breaker on each of your outside water spigots.

These vacuum breakers will prevent water from being back-siphoned from a polluted or even contaminated water source into your home's water pipes or the public water distribution system.  These devices cost about $7 and are available at most hardware stores.  Hose-bib vacuum breakers have been required by the Standard Plumbing Code since 1963.

Who should I contact for more information?
Summit Park PSD office staff and field technicians will be happy to answer your questions.  Call 304-623-5304 or email

Cross Connection and Backflow Prevention

             Summit Park Public Service District