| Size (Peak day design capacity, gallons per day) - less than 10,000 | 1 | 
				
					| Water Supply Source - Groundwater | 2 | 
				
					| Pretreatment - Roughing filter: Non-backwashable strainer or filter | 2 | 
				
					| Adjustment and Corrosion Control - Corrosion inhibitor | 3 | 
				
					| Aeration / Ion Exchange - Aeration: Mechanical or diffused | 3 | 
				
					| Activated Carbon - Granular activated carbon contactors | 4 | 
				
					| Oxidation - Potassium permanganate | 4 | 
				
					| Coagulation - Primary coagulant | 5 | 
				
					| Flocculation - Hydraulic flocculator | 4 | 
				
					| Sedimentation - Tube settlers | 2 | 
				
					| Filtration - Membrane filtration | 8 | 
				
					| Disinfection - Liquid and powdered hypochlorites | 3 | 
				
					| Sludge Treatment - Discharge to sewer or other off-site treatment | 0 | 
				
					| Storage - Tank capacity less than 50,000 gallons | 1 | 
				
					| Storage - Pressure tanks | 0 |