Section 675IAC20-5-22. Water supply

   (a) The water supply serving the water attraction shall meet 327 IAC, the rules of the water pollution control board, before any bather uses the water attraction.

  (b) No direct mechanical connection shall be made between the potable water supply and the water attraction, disinfectant equipment, chemical feeders, or system piping for the water attraction unless it is protected against backflow and siphonage in a manner acceptable under 675 IAC 16, the Indiana Plumbing Code, or through an approved airgap meeting that same code.

  (c) An over-the-rim spout, if used, shall be under a diving or jump board, diving platform, balance tank, adjacent to a ladder, or otherwise shielded so as not to create a hazard. Its open end shall:

(1) have no sharp edges; and

(2) not protrude more than two (2) inches beyond the interior wall.

The spout shall be separated from the pool water by an air gap of at least six (6) inches or two (2) pipe diameters from the pipe outlet to the rim, whichever is greater.

  (d) For zero (0) depth entry without a surge tank, automatic fill shall be required.

  (e) Spray/splash pads shall have a balance tank. The total water volume of a balance tank including associated piping (in gallons) shall be at a minimum of five (5) times the absolute value of the combined design flow rate of all the attraction pumps or a minimum of one thousand (1,000) gallons, whichever is greater.

  (f) Gravity drains shall be of a capacity of at least one hundred twenty-five percent (125%) of the discharge. (Fire Prevention and Building Safety Commission; 675 IAC 20-5-22; filed Mar 25, 2011, 10:19 a.m.: 20110420-IR-675090789FRA; readopted filed Aug 7, 2013, 8:51 a.m.: 20130904-IR-675130181RFA)