Minn. R. agency 144, ch. 4725, WATER-SUPPLY WELLS, pt. 4725.5250
A buried discharge line between a water-supply well casing and the pressure tank in an installation, including a deep well turbine or a submersible pump, must not be under negative pressure at any time. If a check valve is installed in a buried water line between the well casing and the pressure tank, the water line between the well casing and the check valve must meet the requirements of part 4725.5150 unless equipped with a vacuum release or combination air release and vacuum release device located between the check valve and the well. Pump discharge lines must be constructed of materials approved in part 4725.5150, subpart 1.
Minn. R. agency 144, ch. 4725, WATER-SUPPLY WELLS, pt. 4725.5250
Statutory Authority: MS s 103I.101; 103I.111; 103I.205; 103I.221; 103I.301; 103I.401; 103I.451; 103I.501; 103I.525; 103I.531; 103I.535; 103I.541; 103I.621; 144.05; 144.12; 144.383; 157.04; 157.08; 157.09; 157.13