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Subpart 1.

Department determination.

The department shall use the criteria specified in this part to assign priority and notify a public water supplier in writing that a wellhead protection plan must be prepared for an existing well.

Subp. 2.

Well vulnerability criteria.

A public water supply well is vulnerable if:


the well water contains ten milligrams per liter or more nitrate plus nitrite nitrogen;


the well water contains quantifiable levels of pathogens as defined in part 7040.0100, subpart 26, or chemical compounds that indicate groundwater degradation as defined in Minnesota Statutes, section 103H.005, subdivision 6;


the well water contains one tritium unit or more when measured with an enriched tritium detection method; or


an enriched tritium analysis of the well water has not been performed within the past ten years; and


information on the well construction is not available; or


the geological material from the land surface to where the groundwater enters the public water supply well is:


fractured bedrock;


solution weathered bedrock;


sandstone bedrock;


unconsolidated material 0.062 millimeters (fine sand) or larger; or


a combination of the materials specified in units (a) to (d).

Statutory Authority:

MS s 103I.101


22 SR 668

Published Electronically:

October 27, 2003

Official Publication of the State of Minnesota
Revisor of Statutes