Authority: IC 13-14-8; IC 13-15-1-2; IC 13-15-2-1; IC 13-18-3-1; IC 13-18-4-1

Affected: IC 13-11-2; IC 13-13-5-1; IC 13-18-2

Sec. 17. A production water well equipped with a pitless unit shall meet the following requirements:

1. (1) A pitless unit shall be:

   1. (A) constructed of steel, stainless steel, or other material compatible with the casing as approved by the commissioner, unless the well casing is constructed of PVC in accordance with section 16 of this rule; and

   2. (B) installed on the well casing using one (1) of the following types of joints:

      1. (i) Welded, with either mechanical or chemical weld.
      2. (ii) Flanged.
      3. (iii) Threaded.
2. (2) The discharge connection of a pitless unit shall be pressurized at all times.

3. (3) A pitless unit shall:

   1. (A) be designed so that the pump can be removed for servicing and maintenance without disturbing the underground discharge piping; and
   2. (B) have an inside diameter greater than or equal to the casing diameter if the casing diameter is less than twelve (12) inches.
4. (4) At least one (1) check valve shall be installed inside the well casing if a submersible pump is used.
5. (5) A compression joint shall not be used for the installation of a pitless unit.
6. (6) A buried suction line is not permitted.

7. (7) A saddle-type pitless adapter is not permitted except at systems with a well casing and a diameter of six (6) inches or less. At these systems, a saddle-type pitless adapter may be used if:

   1. (A) it maintains positive pressure;
   2. (B) the pitless adapter is designed to support the weight of the column and pump; and
   3. (C) the pump is accessible.

(Water Pollution Control Division; 327 IAC 8-3.4-17; filed Jun 17, 1999, 1:50 p.m.: 22 IR 3375; readopted filed Jan 10, 2001, 3:23 p.m.: 24 IR 1518; filed Apr 24, 2006, 3:00 p.m.: 29 IR 2967; readopted filed Nov 21, 2007, 1:16 p.m.: 20071219-IR-327070553BFA; readopted filed Jul 29, 2013, 9:21 a.m.: 20130828-IR-327130176BFA; readopted filed Jun 14, 2019, 1:59 p.m.: 20190710-IR-327190246BFA; readopted filed Oct 18, 2024, 1:57 p.m.: 20241113-IR-327230810RFA)