Section 5-4.2 - Certification required | New York Codes, Rules and Regulations

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Plant type	System complexity	System classification	Required minimum grade Operator/ Assistant operator
Water treatment plant with facilities for filtration which is designed to treat over 2.5 MGD (million gallons per day)	Surface water or ground water systems under the direct influence of surface water that provides filtration.	IA	IA IIA
Water treatment plant with facilities for filtration which is designed to treat 2.5 MGD or less	Surface water or ground water systems under the direct influence of surface water that provides filtration.	IIA	IIA IIA
Water treatment plant which is designed to treat over 2.5 MGD	Groundwater (excluding ground water under the direct influence of surface water) or Surface water systems with filtration avoidance without facilities for clarification.	IB	IB IIB
Water treatment plant which is designed to treat 2.5 MGD or less	Groundwater (excluding ground water under the direct influence of surface water) or Surface water systems with filtration avoidance without facilities for clarification.	IIB	IIB C
Water treatment plant and/or distribution system that is designed to serve 1,000 people or less	Systems with facilities for basic treatment (including bag, cartridge, pressure and/or other basic filtration as outlined in sections 5-1.22 and 5-1.30 of this Part), and/or pressure zones, booster stations, storage tanks, fire protection, disinfection, non-residential consumers, cross-connection potential, demand variations, etc.	C	C none required
Distribution system serving greater than 1,000 people and/or purchasing water system.	Pressure zones, booster stations, storage tanks, fire protection, disinfection, non-residential consumers, cross-connection potential, demand variations, etc.	D	D none required