1. (a) The owner of a PBF shall plainly and conspicuously mark the depth of water in feet:

   1. (1) At or above the waterline on the vertical wall of the PBF; and
   2. (2) On the top of the coping or edge of the deck or walkway next to the PBF.
2. (b) Depth markers on surfaces used for walking shall be slip-resistant.

3. (c) Depth markers shall be installed at:

   1. (1) The maximum and minimum water depths;
   2. (2) All points of slope change;
   3. (3) Intermediate increments of water depth not to exceed 2 feet, nor spaced at distances greater than 25-foot intervals; and
   4. (4) When an underwater shelf does not use steps as a transition to the rest of the pool, depth markers of the adjacent pool depth shall be placed at the underwater shelf’s edge a minimum of every 10 feet.
4. (d) Depth markers on irregularly shaped pools and spas also shall designate depths at all major deviations in shape.

5. (e) Depth markers shall be:

   1. (1) At least 4 inch in height;
   2. (2) Of contrasting color to the background on which they are applied; and
   3. (3) Of a permanent nature, provided that semi-permanent markers may be used until the PBF undergoes renovations that allow permanent markers to be affixed.
6. (f) Any PBF having depths greater than 5 feet shall have a rope with attached floats placed across the pool one to 2 feet from the 5-foot depth on the shallow side of the break.

Source. #10577, eff 5-1-14 (See Revision Note #2 at chapter heading for Env-Wq 1100); ss by #13198, eff 5-1-21 (see Revision Note #3 at chapter heading for Env-Wq 1100) (formerly Env-Wq 1105.18)