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Environmental Services
Swimming Pool

Dispose of Pool Water Properly

Tips to Dispose of Treated Water from Pools, Spas and Fountains
The average swimming pool holds 20,000-25,000 gallons of water that may contain a variety of chemicals used to kill algae. These chemicals are toxic to the environment, wildlife and fish. In fact, emptying water containing chemicals from pools, spas and fountains to nearby storm drains pollutes waterways and unmanaged discharge is prohibited by local, state and federal laws.
Did you know?
Section 23.2-4.1(6) of the Prince William County Code regulates the unlawful discharge to the stormwater system and waters of the County. It states that it shall be a violation for any person to discharge chlorinated swimming pool water without dissipating chlorine first.
Before you drain:
· Allow pool water to sit for several days without treating it to allow chlorine to dissipate.
· Add sodium thiosulphate, a salt that breaks down chlorine, to the water for faster results.
· The pH of the water should be 6.5-8.5.
· Drain pool water containing chlorine or bromine into grassy areas where it will soak into the ground rather than flow to nearby storm drains or streams.
· Be considerate of neighbors’ property and landscaping when you release water.
· When releasing pool water, make sure it is gradually released over a flat area to allow it to spread out as it is flows.
For more information or guidance, please call 703-792-7070. 


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