Size (Peak day design capacity, gallons per day) - 1,000,001 - 5,000,000 | 16 |
Water Supply Source - Surface water maintaining filtration avoidance criteria under 18 AAC 80.620 | 8 |
Pretreatment - Roughing filter: Non-backwashable strainer or filter | 2 |
Disinfection - Liquid and powdered hypochlorites | 3 |
Disinfection - Additional points if hypochlorites are generated on-site | 2 |
Disinfection - Ultraviolet light, for meeting required inactivation | 4 |