Iowa Admin. Code r. 567-49.18 - Underground piping and wiring
(1) Underground piping from the well casing
to the pressure tank shall be a minimum 100 psi pressure rating, NSF Standard
61, and meet ASTM standards for potable water.
(2) Underground wiring from a well shall
either be enclosed in a watertight electrical conduit extending from the
entrance of the conduit into the casing to a minimum of three feet below ground
level, threaded into the well cap, or sealed into the cap or casing in a
watertight manner. The internal passage of the conduit shall be sealed around
the wire with a nonhardening, pliable sealing compound.
Notes
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Underground piping from the