Minnesota Administrative Rules

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.

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

History:

17 SR 2773; 33 SR 211

Published Electronically:

September 2, 2008