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USEPA offers first glimpse of Stage 2 D/DBPR
Author(s) -
Scharfenaker Mark A.
Publication year - 2001
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.2001.tb09347.x
Subject(s) - stage (stratigraphy) , environmental science , groundwater , environmental engineering , environmental planning , engineering , geology , paleontology , geotechnical engineering
This article discusses the new Stage 2 Disinfectants/Disinfection By‐products Rule that essentially seeks to prevent delivery to some customers of tap water that regularly contains disinfection by‐products (DBPs) in amounts that exceed standards as measured on a systemwide basis. The article discusses compliance methods for the Stage 2 D/DBPR requirements for community water systems and nontransient‐noncommunity water systems that use surface water or groundwater and add disinfectants other than ultraviolet light or deliver water treated in such a manner. The Stage 2 rule aims to strengthen the Stage 1 rule by requiring a two‐phased transition over nine years that will have all systems start by conducting an initial distribution system evaluation (IDSE) to identify the best monitoring sites, simultaneously comply in three years with State 1 RAA standards and “transitional” Stage 2 LRAA standards at Stage 1 monitoring sites, and eventually switch to complying only with final Stage 2 LRAA standards at IDSE‐identified monitoring sites.