Wisconsin Administrative Code
Department of Natural Resources
NR 800 - Environmental Protection - Water Supply
Chapter NR 811 - Requirements For The Operation And Design Of Community Water Systems
Subchapter III - Source Development - Surface Water
Section NR 811.231 - Off-Stream raw water storage

Universal Citation: WI Admin Code ยง NR 811.231

Current through August 26, 2024

(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.

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