(a) Generally. A public potable water supply system shall be designed, installed and maintained in such a manner as to prevent contamination from non-potable sources through cross-connections or any piping connection to the system.
(b) Cross-connections prohibited. Cross-connections are prohibited except when and where as approved by the City Administrator suitable backflow preventers are properly installed, tested and maintained to ensure proper operation on a continuing basis.
(c) Interconnections. Interconnection between two or more public water supplies shall be permitted only with the approval of the State Department of Health and Environment. (See K.S.A. 65-163(a).)
(d) Individual water supplies. Connections between a private water supply and the public potable water are prohibited. (See K.S.A. 65-163(a).)
(e) Connections to boilers. Potable water connections to boiler feed water systems in which boiler water conditioning chemicals are or can be introduced shall be made through an air gap or through a reduced pressure zone principle backflow preventer located in the potable water line before the point where such chemicals may be introduced.
(f) Prohibited connections. Connection to the public potable water supply system for the following is prohibited unless properly protected by the appropriate backflow prevention device:
(1) Bidets;
(2) Operating, dissecting, embalming and mortuary tables or similar equipment. In such installations, the hose used for water supply shall terminate at least 12 inches away from every point of the table or attachments;
(3) Pumps for non-potable substances. Priming only through an air gap;
(4) Building drains, sewers or vent systems;
(5) Commercial buildings or industrial plants manufacturing or otherwise using polluting or contaminating substances; or
(6) Any fixture of similar hazard.
(g) Refrigeration unit condensers and cooling jackets. Except when potable water provided for a refrigeration condenser or cooling jacket is entirely outside the piping or tank containing a toxic refrigerant, the inlet connection shall be provided with an approved backflow preventer. Heat exchangers used to heat water for potable use shall be of the double wall type.
(h) Protective devices required. The type of protective device required under this article shall be determined by the degree of hazard which exists as follows.
(1) Premises having auxiliary water supply shall protect the public system by either an approved air gap or an approved reduced pressure principle backflow prevention assembly.
(2) Premises having water or substances which would be non-hazardous to the health and well being of the consumers shall protect the public system with no less than an approved double check valve assembly.
(3) Premises where material dangerous to health is handled in a manner which creates an actual or potential hazard shall protect the public system by an approved air gap or an approved reduced pressure principle backflow prevention assembly.
(4) Premises where cross-connections are uncontrolled shall protect the public water supply by installing an approved air gap or an approved reduced pressure principle backflow prevention device at the service connection.
(5) Premises, where because of security requirements or other prohibitions, it is impossible to complete an in plant cross-connection inspection, the public system shall be protected by an approved air gap or an approved reduced pressure principle backflow prevention assembly.
(6) Premises which may fall into one or more of the above mentioned categories may be, but are not limited to, the following:
(A) Beverage bottling plants;
(B) Buildings , hotels, apartments, public or private buildings or other structures having actual or potential cross-connections;
(C) Car wash facilities;
(D) Chemical manufacturing, handling or processing plants;
(E) Chemically contaminated water;
(F) Dairies and cold storage facilities;
(G) Film or photography processing laboratories;
(H) Fire systems;
(I) Hospitals, medical centers, morgues, mortuaries/autopsy facilities, clinics or nursing and convalescent homes;
(J) Irrigation systems;
(K) Laundries;
(L) Metal cleaning, processing or fabricating plants;
(M) Oil and gas production, storage or transmission facilities;
(N) Packing or food processing plants;
(O) Paper and paper products plants;
(P) Power plants;
(Q) Radioactive materials plants or handling facilities;
(R) Restricted or classified facilities;
(S) Rubber plants;
(T) Sand, gravel or asphalt plants;
(U) Schools or colleges;
(V) Sewage and storm drainage facilities and reclaimed water systems;
(W) Solar heating systems;
(X) Temporary service - fire hydrants, air valves, blow-offs and other outlets; or
(Y) Water front marinas.
(Ord. 768, passed 8-21-1989)