Water Chemistry Guidelines
Effective October 2019, APSP and the NSPF merged to form the Pool & Hot Tub Alliance (PHTA). The ranges listed below are the original APSP guidelines.
Recommended Guidelines For Water Quality
Effective October 2019, APSP and the NSPF merged to form the Pool & Hot Tub Alliance (PHTA). The ranges listed below are the original NSPF guidelines.