Section NR 811.231 - Off-Stream raw water storage(1) DEFINITION. In this section, "off-stream raw water storage reservoir" is defined as a facility into which water is pumped during periods of good quality and high stream flow for future release to the treatment facilities.(2) CONSTRUCTION. Off-stream raw water storage reservoirs shall be constructed to assure all of the following: (a) Water quality is protected by controlling runoff into the reservoir.(b) Dikes are structurally sound and protected against wave action and erosion.(c) Intake structures meet the requirements of s. NR 811.22.(d) Point of influent flow is separated from the point of withdrawal, with separate pipes for influent to and effluent from the reservoir.(e) Water is regularly circulated to prevent stagnation.(f) The reservoir is surrounded by a fence and unauthorized access is prevented.(g) The reservoir is covered.(h) The requirements of s. NR 811.47 (7) are met if the reservoir is to be used as a pre-sedimentation basin.(i) A bypassing line is provided to allow for direct pumping to the treatment facilities.Wis. Admin. Code Department of Natural Resources NR 811.231
CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10.Amended by, CR 22-074: am. (2) (d), (g), cr. (2) (i) Register January 2024 No. 817, eff. 2/1/2024