Interim Enhanced Surface Water Treatment And other microbial contaminants in public water systems serving 10,000 or more persons. The Interim Enhanced Surface Water Treatment Rule IESWTR builds on the requirements of the Surface Water Treatment Rule. IESWTR specifies treatment
Ultraviolet Disinfection Guidance Manual for the Final. The rule balances the need for treatment with potential increases in disinfection by-products. ULTRAVIOLET DISINFECTION GUIDANCE MANUAL. SURFACE WATER TREATMENT RULE Office of Water. including EPA, states.
Alternative Disinfectants and Oxidants Guidance Manual The materials found on this page are intended to assist public water systems and state in the implementation of the IESWTR. April 1999 1-1 EPA Guidance Manual Alternative Disinfectants and Oxidants. April 1999 1-3 EPA Guidance Manual. IESWTR amends the Surface Water Treatment Rule.