In California, public swimming pool safety is governed by a combination of the Health and Safety Code, Title 22 (Social Security), and Title 24 (Building Standards).
As of January 1, 2026, California has introduced landmark changes to pool heating and energy efficiency, moving the state toward total decarbonization of new aquatic facilities.
California’s new "decarbonization mandate" significantly changes how new pools are built:
Primary Heat Source: For new construction or major remodels adding a heater, gas-fired heaters can no longer be the primary source. You must use an Electric Heat Pump or a Solar Thermal system.
Gas Heaters as Backup: Gas heaters are still allowed but only as a "supplemental" source. They must be programmed to only kick in if the heat pump cannot maintain the temperature.
Mandatory Covers: Any outdoor pool or spa equipped with a heat pump or gas heater must use a pool cover to minimize heat loss.
Hydraulic Efficiency: New rules mandate "sweep elbows" and specific pipe sizing to reduce friction, allowing pumps to run more efficiently.
These are the day-to-day rules that inspectors (Registered Environmental Health Specialists) enforce:
Disinfection & pH: * Free Chlorine: Minimum 1.0 ppm (no cyanuric acid) or 2.0 ppm (with cyanuric acid). Spas require 3.0 ppm.
pH: Must be between 7.2 and 7.8.
Daily Logs: Facilities with 25+ units must test water daily. Smaller facilities (<25 units) must test at least twice per week. Records must be kept for 2 years.
Water Clarity: The "main drain" or a small black disc at the deepest part must be clearly visible. If the water is cloudy, the pool must close immediately.
Lifeguard Services: Required if a direct fee is charged for use. If no fee is charged (e.g., hotels/apartments), you must post a "NO LIFEGUARD ON DUTY" sign.
Safety Signs:
"Keep Closed": Required on the exterior of all gates in 4-inch letters.
"Diarrhea Notice": A specific sign warning patrons not to swim if they have had diarrhea in the last 14 days.
Emergency Equipment: A life ring (min. 17-inch diameter) with an attached rope and a 12-foot shepherd’s crook are mandatory (except for spas/wading pools).
Fencing: Barriers must be at least 5 feet (60 inches) high with self-closing, self-latching gates that open outward.
California Code of Regulations Title 22, § 65501: Definitions and operational health standards for public pools.
California Building Code Chapter 31B (Public Pools): The structural, lighting, and safety equipment requirements.
California Title 24, 2026 Energy Standards Guide: Details on the heat pump and solar mandates for 2026.
CDPH Public Swimming Pools Page: The California Department of Public Health’s central hub for recreational water safety.
Note for 2026: If you submitted your pool permit application before December 31, 2025, you likely "locked in" the old standards and can still use a gas heater as your primary source. Projects permitted after January 1, 2026, must follow the new electric/solar mandates.
5170A Timberlea Blvd.