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Cross-Connection Division

The State of Wisconsin through Wisconsin Administrative Code Section NR 811.09 and Department of Commerce Section 82.41 requires that a Cross-Connection program protect all public water supply systems.

Wisconsin Administrative Code

NR 811.09 Cross–connections and interconnections.
Installation or replacement of cross–connections is prohibited. Plumbing back–siphonage, cross–connection and potability control regulations are provided in s. Comm 82.41; watersystem interconnections are prohibited except as provided in sub.(2). In addition the following requirements
shall be met.

(1) CROSS–CONNECTION CONTROL PROGRAM. The supplier of water for every municipal water system shall develop and implement a comprehensive control program for the elimination of all existing cross–connections and prevention of all future cross–connections. A record of the cross–connection control program shall be kept current and available for annual review by the department.  The control program shall include but not be limited to:

            (a) A complete description of the program and the administration procedures, including designation of the inspection or enforcement agency or agencies;

            (b) Local authority for implementation of the program, such as ordinance or rule;

            (c) A time schedule for inspection and reinspection of consumer premises for cross–connections including appropriate record keeping. Unless otherwise authorized by the department,  each supplier of water shall inspect every service a minimum of once every 10 years. It is recommended that industrial and commercial services be inspect ed once every 2 years.

            (d) A description of the methods and devices which will be used to protect the water supply by reference to or inclusion of ch. Comm 82;

            (e) Provisions for denial or discontinuance of water service, after reasonable notice, to any premises where an unprotected cross–connection exists.

            (f) Submission to the department of a copy of an ordinance establishing a cross–connection control program.

(2) INTERCONNECTIONS WITH OTHER ACCEPTABLE WATER SOURCES. Interconnections between the public water supply system and another source of water are prohibited unless permitted by the department in individual cases. Approval of the department shall be obtained prior to the interconnection. History: Cr. Register, April, 1992, No. 436, eff. 5–1–92; correction in (intro.) and

            (1) (d) made under s. 13.93 (2m) (b) 7., Stats., Register, December, 1998, No.516.

Department of Commerce Section

Comm 82.41 Cross connection control.
(1) SCOPE.  The provisions of this section set forth the requirements for the protection of potable water within water supply systems when and where there is the possibility of contamination due to cross connections or backflow conditions. Note: The Department of Natural Resources governs the operation and design of community water systems and under s. NR 811.09 requires the supplier of water to develop and implement a comprehensive cross connection control program.

(2) MATERIALS. (a) All devices, assemblies and mechanisms intended to protect water supplies relative to cross connection or backflow shall be of a type recognized and approved in accordance with ch. Comm 84 and as described in sub. (4). (b) All methods including barometric loops and air gaps intended to protect water supplies relative to cross connection or backflow shall be constructed of materials suitable for water supply systems in accordance with ch. Comm 84.

(3) GENERAL REQUIREMENTS. Water supply systems and the connection of each plumbing fixture, piece of equipment, appliance or nonpotable water piping system shall be designed, installed and maintained in such a manner to prevent the contamination of water supplies by means of cross connections. (a) Types of cross connection control. 1. Water supply systems shall be protected against contamination due to cross connections or backflow conditions by one of the methods or devices specified in Table 82.41−1 depending upon the situation or Table 82.41−2 depending upon the specific application or use, and the limitations specified in sub. (4). 2. For the situations described in par. (b) 3., cross connection control shall be provided as part of the fixture fitting outlet or in the water supply piping for the fixture fitting outlet.