FHA does not specifically test the water nor does it have a certain requirement as to the clarity to the water. They do however open up a gray area by stating that the level and quality of the water in the pool must not pose a health or safety risk. I.E. no mosquito infestations or algae!!
My lender of 25 years of FHA experience says yes. Not only that, but the special self closing doors and all that jazz need to be operational (drowning prevention).
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