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 IX - Storage Facilities
Section NR 811.65 - Plant storage
Universal Citation: WI Admin Code ยง NR 811.65
Current through August 26, 2024
The applicable design standards of ss. NR 811.63 and shall be 811.64 followed for plant storage. In addition:
(1) FILTER WASHWATER TANKS. Filter washwater tanks shall be sized, in conjunction with available pump units and finished water storage, to provide the backwash water required by s. NR 811.49. The design shall address the possibility of having to backwash more than one filter at a time, or several filters in succession.
(2) CLEARWELL.
(a) Clearwell storage shall be sized, in
conjunction with distribution system storage, to relieve the filters from the
strain of fluctuations in water use or peak demands.
(b) When water storage is used to provide
proper contact time for disinfection, documentation, including tracer testing,
shall be provided to assure adequate detention time under all operating
conditions. The department may require the installation of baffle walls or
additional reservoir capacity if necessary to prevent short circuiting and to
obtain adequate contact times.
(3) BASINS AND WET-WELLS. Receiving basins, pump cans, and pump wet-wells for finished water or water to become finished water shall be designed as finished water storage structures.
Disclaimer: These regulations may not be the most recent version. Wisconsin 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.
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