Minnesota Administrative Rules
Agency 144 - Health Department
Chapter 4720 - PUBLIC WATER SUPPLIES
GENERAL WELLHEAD PROTECTION REQUIREMENTS AND CRITERIA
Part 4720.5550 - CRITERIA FOR ASSESSING WELL VULNERABILITY
Universal Citation: MN Rules 4720.5550
Current through Register Vol. 49, No. 13, September 23, 2024
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:
A. the well water contains ten milligrams per
liter or more nitrate plus nitrite nitrogen;
B. 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;
C. the well water contains one
tritium unit or more when measured with an enriched tritium detection method;
or
D. an enriched tritium analysis
of the well water has not been performed within the past ten years; and
(1) information on the well construction is
not available; or
(2) the
geological material from the land surface to where the groundwater enters the
public water supply well is:
(a) fractured
bedrock;
(b) solution weathered
bedrock;
(c) sandstone
bedrock;
(d) unconsolidated
material 0.062 millimeters (fine sand) or larger; or
(e) a combination of the materials specified
in units (a) to (d).
Statutory Authority: MS s 103I.101
Disclaimer: These regulations may not be the most recent version. Minnesota may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google
Privacy Policy and
Terms of Service apply.
