Must a pool, spa or bathing lake be disinfected?
All pools and spas must be continuously and automatically disinfected by an approved means, which will maintain an adequate and readily measurable residual of disinfectant in the water. Bathing lakes may not be required to be disinfected unless disinfection is necessary to meet bacteriological standards.

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1. What are the minimum design requirements?
2. Do you have guidance for design features not listed in the regulations?
3. What is my pool's maximum allowed bathing load?
4. What is my spa’s maximum allowed bathing load?
5. What are the requirements for water used to fill a pool, spa or bathing lake?
6. Is drinking water required at a public pool or spa?
7. Must a pool, spa or bathing lake be disinfected?
8. Where can filter backwash or wasted water be disposed?