Premium
Introducing the New Federal Regulations for Disinfectants, DBPs, and Microbials
Author(s) -
Pontius Fred
Publication year - 1999
Publication title -
opflow
Language(s) - English
Resource type - Journals
eISSN - 1551-8701
pISSN - 0149-8029
DOI - 10.1002/j.1551-8701.1999.tb02169.x
Subject(s) - maximum contaminant level , haloacetic acids , disinfectant , surface water , chloramine , chlorine dioxide , environmental science , groundwater , environmental chemistry , turbidity , environmental engineering , water treatment , safe drinking water act , chlorine , water quality , waste management , chemistry , engineering , inorganic chemistry , ecology , oceanography , geotechnical engineering , organic chemistry , geology , biology
This article discusses two rules published by the US Environmental Protection Agency intended to protect customers against harmful levels of disinfectants (D), disinfection byproducts (DBP), and microbial contaminants. Three major components of the Stage 1 D/DBP Rule are discussed: maximum residual disinfectant level goals and maximum residual disinfectant levels for chlorine, chloramines, and chlorine dioxide; maximum contaminant levels for total trihalomethanes at 0.080 mg/L and the sum of 5 haloacetic acids at 0.060 mg/L; and, precursor removal requirements for surface water systems using conventional treatment. Several major components of the Interim Enhanced Surface Water Treatment Rule (IESWTR) are also discussed: a maximum contaminant level goal of zero for Cryptosporidium; increased turbidity performance standards for filtration; individual filter performance requirements; disinfection profiling and benchmarking requirements; prohibition on construction of new uncovered finished water reservoirs; and, requirements that the state conduct sanitary surveys for all systems using surface water or groundwater under direct influence of surface water. Compliance dates for both the Stage 1 D/DBP Rule and the IESWTR are listed.