(1) Overflow gutters shall be provided on all pools having a surface area over 1600 square feet unless the license applicant can demonstrate that use of more skimmers than minimally required will provide sufficient recirculation to meet or exceed required turnover rates.

(2) Pools having a surface area less than 1600 square feet may use either overflow gutters or skimmers.

(3) Overflow gutters shall extend around the entire perimeter of the pool, except at steps or recessed ladders.

(4) The hydraulic capacity of the overflow gutter shall be designed to be capable of handling 100 percent of the recirculation flow.

(5) Where large or surge gutters are used they shall be designed to prevent entrance or entrapment of a bather's arms or legs.

(6) The overflow gutter edge or lip shall also be designed to serve as a handhold.

(7) The water level in the pool, spa, or other water feature shall be maintained at a level one-quarter inch above the overflow gutter or as designed by the manufacturer.