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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.

History:

17 SR 2773; 33 SR 211

Published Electronically:

September 2, 2008

700 State Office Building, 100 Rev. Dr. Martin Luther King Jr. Blvd., St. Paul, MN 55155 ♦ Phone: (651) 296-2868 ♦ TTY: 1-800-627-3529 ♦ Fax: (651) 296-0569