3701-28-08 Cross-connection and backflow.

(A) For purposes of this rule:

(1) A “backflow prevention device” is any device, method or type of construction to prevent backflow of water, liquids, mixtures, or substances into the distributing pipes of a potable supply of water from any source other than its intended source.

(2) “Cross connection” means any physical connection or arrangement between two otherwise separate piping systems, one of which contains potable water and the other; gas, water, or other liquid of unknown or questionable quality or safety, whereby water may flow from one system to the other, the direction of flow depending on the pressure differential between the two systems.

(B) No person shall install or maintain a private water system where physical cross-connections to another public or private water system exist unless:

(1) The private water system is constructed as a combination of one or more types of water supply sources; and

(2) The private water system has an approved backflow prevention device or approved check valve installed in line prior to any connections from other water sources to prevent the backflow of one water source into another.

(C) No person shall install or maintain a connection within a private water system which could pollute the water system or provide a cross-connection between a source of contamination and the water system unless an approved backflow prevention device is installed.

(D) An approved backflow prevention device shall be installed to protect all service connections, yard hydrants, or where necessary to prevent a potential health or contamination hazard.

(E) All backflow prevention devices shall meet the criteria of and be installed in accordance with the applicable standards listed in table 609.1 of rule 4101:2-61-09 of the

R.C. 119.032 review dates: 12/23/2004 and 11/15/2009

Promulgated Under: 119.03

Statutory Authority: 3701.344

Rule Amplifies: 3701.344

Prior Effective Dates: 1/1/1981, 1/1/00