Wyoming Administrative Code
Agency 010 - Agriculture, Dept. of
Sub-Agency 0008 - Public Swimming Pools
Chapter 4 - SANITARY FACILITIES AND CONTROLS
Section 4-10 - Filters; Types, Uses, Requirements
Universal Citation: WY Code of Rules 4-10
Current through September 21, 2024
(i) Filters used in pools, spas and similar installations shall be capable of maintaining pool water clarity as described in chapter 5, section 1(a) under maximum use load conditions.
(ii) The filter rate shall not exceed the following:
(i) High rate
sand filters - twenty (20) gpm or (56.8 lpm) per square foot (.093cm²) of
filter media or that rate approved by the National Sanitation Foundation for
that particular filter, whichever is less;
(ii) Rapid sand filters - three (3) gpm (11.4
1pm) per square foot (.093m2) of filter media;
(iii) Diatomaceous earth filters - two (2)
gpm (7.6 1pm) per square foot (.093m2) of filter media; or
(iv) Cartridge filters - 0.5 gpm (1.9 1pm)
per square foot (.093m2) of effective filter area.
(c) The filter tank shall be designed to
permit the release of air that enters the filter tank.
(d) Filter components that require servicing
shall be accessible and available for inspection and repair.
(e) Filters shall be designed so that
filtration surfaces may be easily inspected and serviced.
(f) Filters shall meet the safety performance
standards of the NSF-50, Circulation System Components and Related Materials
for Swimming Pools, Spas/Hot Tubs.
(g) Diatomaceous earth filter backwash water
must discharge to the sewer system through a separation tank.
(i) The separation tanks shall:
(A) Be provided with a manual means air
release mechanism or a lid that provides a slow and safe release of pressure;
and
(B) Have a precautionary
statement affixed to warn the user that the air release must be opened before
starting the circulation pump.
(h) Pools with a perimeter overflow system
shall be provided with surge tanks unless predesigned and prefabricated to use
in-gutter surge.
(i) The surge
tanks shall have a capacity of one (1) gallon (3.8 l) per square foot
(.093m²) of pool surface.
Disclaimer: These regulations may not be the most recent version. Wyoming 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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