Wyoming Administrative Code
Agency 010 - Agriculture, Dept. of
Sub-Agency 0008 - Public Swimming Pools
Chapter 4 - SANITARY FACILITIES AND CONTROLS
Section 4-12 - Overflow Systems

Universal Citation: WY Code of Rules 4-12

Current through December 21, 2024

(a) A public pool shall be operated with a continuous overflow system.

(i) The overflow system shall be a perimeter-type system or a system of overflow skimmers.

(b) A general-use pool or a limited-use pool with more than two thousand (2,000) square feet (185.78m²) of surface area shall use a perimeter-type overflow system.

(c) A limited-use pool with less than two thousand (2,000) square feet (185.87m²) of surface area shall use a perimeter-type system or a skimmer system.

(d) A perimeter-type system shall in addition be connected to the re-circulation system with a system surge capacity of at least one (1) gallon (3.785 1) per square foot (.3m²) of pool surface.

(i) External surge systems shall be capable of transferring water at a rate equal to one-hundred (100) percent of the design pool flow rate.

(e) Gutters shall:

(i) Drain in two (2) minutes or less after sudden flooding;

(ii) Extend completely around the pool;

(iii) Be smooth and easy to clean;

(iv) Slope at least one-eighth (1/8) inch (3mm) per foot (30cm); and

(v) In combination with the upper rim of the pool, constitute a handhold.

(f) A skimmer-type system shall:

(i) Have one skimmer for each four-hundred (400) square feet (37.17m²) of surface area with a minimum of two skimmers per pool;

(ii) Be used only in conjunction with a continuous handhold extending the full perimeter of the pool; and

(iii) Be located so as to achieve effective skimming action over the entire surface area of the pool.

(g) Where surface skimmers are used in a spa pool, the flow rate through the skimmer shall:

(i) Be designed to provide fifty (50) percent of the total turnover rate with a maximum flow through any single skimmer of thirty (30) gpm;

(ii) Have the minimum width of a skimmer intake throat of five (5) inches (12.Scm); and

(iii) Where surface skimmers are used as the sole overflow system, one (1) surface skimmer shall be provided for each one hundred (100) square feet (9.3m²) or fraction thereof of the spa's surface area.
(A) If a conflict arises between (i) and this subsection, the subsection requiring the greatest number of skimmers shall apply.

(iv) When two (2) or more skimmers are used in a spa, they shall be located to maintain effective skimming action over the entire surface area of the spa.

(h) Overflow systems shall be designed to return overflow water to the re-circulation system ahead of the filters; and

(i) Provisions shall be made for diverting gutter water to waste when cleaning the gutter.

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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