Minnesota State Law Requires
Fluoridation of Municipal Water Systems:
2007 Minnesota Statutes
144.145 FLUORIDATION OF MUNICIPAL WATER
SUPPLIES. For the purpose of promoting public health through prevention of tooth
decay, the person, firm, corporation, or municipality having jurisdiction over a
municipal water supply, whether publicly or privately owned or operated, shall
control the quantities of fluoride in the water so as to maintain a fluoride
content prescribed by the state commissioner of health. In the manner provided
by law, the state commissioner of health shall promulgate rules relating to the
fluoridation of public water supplies which shall include, but not be limited to
the following: (1) The means by which fluoride is controlled; (2) the methods of
testing the fluoride content; and (3) the records to be kept relating to
fluoridation. The state commissioner of health shall enforce the provisions of
this section. In so doing the commissioner shall require the fluoridation of
water in all municipal water supplies on or before January 1, 1970. The state
commissioner of health shall not require the fluoridation of water in any
municipal water supply where such water supply in the state of nature contains
sufficient fluorides to conform with the rules of such commissioner. History:
1967 c 603 s 1; 1977 c 305 s 45; 1985 c 248 s 70; 1986 c 444
Minnesota Administrative Rules - 4720.0030
This part shall be applicable to all municipal
water supplies, as required by Minnesota Statutes, section 144.145.
The fluoride content of the water shall be
controlled to maintain an average concentration of 1.2 milligrams per liter; the
concentration shall be neither less than 0.9 milligrams per liter nor more than
1.5 milligrams per liter.
The chemical feeder apparatus for introducing
fluoride to the water supply shall conform to the standards of the commissioner
Equipment for the adequate and reliable testing
of the fluoride content shall be furnished for each installation. The method of
testing the fluoride content of the water shall be approved by the commissioner
of health. Approval shall require either a photometric colorimetric procedure,
preceded when necessary by distillation or other treatment to remove interfering
materials, or a fluoride-specific electrode and an associated potential
measuring device. Continuous monitoring systems shall be approved when they can
be installed to monitor a representative portion of the entire supply.
Samples collected daily.
Samples shall be collected daily at a point(s)
in the distribution system representative of the entire supply. Sampling point(s)
shall be located downstream sufficiently distant from the point(s) at which
fluoride is fed into the water supply to ensure that the distance traversed and
the time elapsed since the introduction of the fluoride concentrate is adequate
to allow its complete mixing with the water. At least once each three months, at
a time designated by the commissioner of health, a duplicate of the usual daily
sample(s) shall be collected in containers furnished by the commissioner of
health and sent to the Department of Health for comparative analysis.
Records of fluoridation.
Daily records of water fluoridation plant
operations shall be maintained by the owners, officials, or their
representatives. These records shall show the amount of water pumped, amount of
fluoride chemical fed, fluoride test results, and any other pertinent
information required by the commissioner of health. A report of the operation of
each water fluoridation plant shall be submitted monthly to the commissioner of
health on forms furnished by them.
Statutory Authority: MS s 144.12 subd 1;
History: L 1977 c 305 s 39
Posted: October 27, 2003