Minn. R. agency 144, ch. 4725, WATER-SUPPLY WELLS, pt. 4725.5350

Current through Register Vol. 49, No. 19, November 4, 2024

Part 4725.5350 - PRESSURE TANKS FOR WATER-SUPPLY WELLS

Subpart 1.Venting.

A pressure relief or air release valve on a pressure tank that contains subterranean gas and is located in a building must be vented to the outside.

Subp. 2.Buried tanks.

A buried or partially buried pressure tank installed on a water-supply well must:

A. be identified with the manufacturer's name, a serial number, the allowable working pressure, and the year fabricated;

B. have an interior coating that complies with ANSI/NSF Standard 61-2003e if the tank has an interior coating in contact with water;

C. have a minimum one-fourth inch wall thickness for a steel pitless adapter tank attached directly to the well casing;

D. have all connections to the pressure tank welded or threaded; and

E. be installed above the water table.

Minn. R. agency 144, ch. 4725, WATER-SUPPLY WELLS, pt. 4725.5350

17 SR 2773; 33 SR 211

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