1. Overflow System Required. All pools/spas shall be provided with a surface overflow system which shall be an integral part of the circulation system and which shall consist of either built-in-place gutters, prefabricated gutters, and/or recessed automatic surface skimmers.

2. Combination Gutter/Skimmer System. Nothing in this section shall preclude use of a surface overflow system which combines both a gutter and a recessed automatic surface skimmer. All pools with a water surface greater than 3,000 square feet shall be equipped with gutters or a combination of gutters and skimmers.

1. Capacity. The system shall be capable of handling 100 percent of the circulation flow (based upon the required turnover rate) without the overflow troughs being flooded for any appreciable period of time.

2. Surge Capacity. A surge capacity shall be provided either in the system and/or by use of a surge tank. The total surge capacity shall be at least equal to one gallon/square foot of swimming pool water surface area.

3. Water Level. The water level of the swimming pool/spa shall be maintained at or slightly higher than the level of the overflow rim of the perimeter overflows, except for the time needed to transfer all of the water which may be in surge capacity back into the swimming pool after a period of use, provided that this transfer time shall not be greater than 20 minutes.

4. Overflow Gutters. Gutters shall extend entirely around the perimeter of the pool and have the necessary slope to prevent accumulations of debris, dirt, etc., be of ample size to carry off normal amounts of water introduced into them, and be easily accessible for cleaning. Drainage outlets shall be provided at least every 15 feet and shall be covered by removable grating.

5. Overflow Rim. When installed, the tolerance of the overflow rim shall not exceed 1/4 inch as measured between the highest point and the lowest point of the overflow rim.

6. Automatic Skimming. During non-use, the overflow system shall be capable of providing continuous and automatic skimming action to the water at the surface of pool.

7. Overflow Troughs. The overflow troughs shall be installed completely around the perimeter of the swimming pool, except at steps, recessed ladders and stairs.

1. NSF Approval Required. Whenever a recessed automatic surface skimmer is installed it shall be designed and constructed in accordance with the current NSF standards pertaining to recessed automatic surface skimmers.

2. Skimmer Design and Material. The recessed skimmer shall be of a grade designed for commercial pools, be of substantial, durable, reasonably corrosion resistant material and equipped with an automatic skimmer weir and removable strainer basket and flat lid flush with deck and securely attached at all times.

3. Skimmer Flow Rate. The skimmer shall be designed for a flow rate based on a minimum 70% of the total flow, in gpm.

4. Skimmer Flow Adjustment Valve. All skimmers shall have an integral trimmer valve.

5. Skimmer Minimum Required.

Skimmer quantity for other water recreation attractions or special purpose pools shall be as determined by the Department during the design review process.

6. Skimmer Location. On outdoor pools/spas the recessed automatic surface skimmer or skimmers shall be so located as to take into consideration the direction of prevailing winds.

7. Skimmer Recessed. A recessed automatic skimmer shall not protrude into the pool.

8. Skimmer Weir. The weir in the skimmer shall adjust automatically and operate freely to variations in water level over a minimum range flow of four inches. The floating basket design is approved in lieu of weirs.

9. Equalizer. Equalizer piping for skimmers is not allowed.