The application of any type of filter and media must be supported by water quality data for the period of use sufficient to characterize any variation in water quality. All public systems using surface water or groundwater under the direct influence of surface water must have filtration systems that meet the minimum requirements of parts 4720.3945 to 4720.3955. Filtration systems must meet the requirements in parts 4720.3945 to 4720.3955.
MS s 144.383
15 SR 1842; 18 SR 1960
October 27, 2003
Official Publication of the State of Minnesota
Revisor of Statutes