1. (1) General. Wells at a storage facility shall comply with applicable requirements in chs. NR 811 and 812.

   Note: Chapters NR 811 and 812 comprise the state well code.

2. (2) Backflow prevention.

   1. (a) All water supply outlets at the storage facility shall be protected against backflow caused by backpressure or backsiphonage. Protection may include any of the following:

      1. 1. A vertical air gap between each water supply outlet and any container or equipment filled from that outlet. The air gap distance shall be at least one inch, or twice the effective opening of the supply outlet, whichever is greater.

      2. 2. A backflow prevention device that complies with s. SPS 382.41.

         Note: SPS 382 is part of the state plumbing code.

   2. (b) An operator shall notify the department at least 7 business days prior to installing or modifying a backflow protection device or system, unless the operator is merely re-installing backflow prevention devices that the operator has temporarily removed to protect them from frost damage.

History

History: CR 05-108: cr. Register October 2006 No. 610, eff. 11-1-06; correction in (2) (a) 2. made under s. 13.92 (4) (b) 7., Stats., Register January 2012 No. 673.