However, Wichita County health officials say doing that can unleash a flood of health concerns.
Health officials say collecting rain water from your roof or greywater, which is wastewater collected from washing machines, bathtubs and showers, may seem like a good fit for swimming pools but they are not.
Health officials say that water contains bacteria that can be extremely dangerous if ingested.
"Bacteria like Cryptosporidium and Giardia can't be killed with chlorine and simple pool filter. They require a lot of treatment and a really, really good filtration," says Susan Morris, environmental health administrator for the Wichita Falls Wichita County Public Health District.
Morris say ingesting pool water containing either bacteria can cause diarrhea, which can be fatal for the very young and the elderly. That's why Morris says you should only add water that you would also drink.
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