LAC 51:XII.323. Filtration [formerly paragraph 12:006]

A. All potable water derived from surface waters shall be filtered before distribution. Pressure filters shall not be used as the primary turbidity removal mechanism in the filtration of surface waters. On a case-by-case basis, the Department of Health and Hospitals (DHH) may allow pressure filters to be used as the primary turbidity removal mechanism in systems identified as being a groundwater under the direct influence of surface water (GWUDISW) system.