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An analysis of monitoring data for the Stage 1 Disinfectants/Disinfection Byproducts Rule
In this research, disinfection by‐product monitoring data for the period between Jan. 1, 2004, and Sept. 30, 2005, were obtained for 113 North Carolina water systems serving 10,000 or more customers. Data were analyzed to assess compliance with the trihalomethane (THM) and haloacetic acid (HAA) regulatory requirements of the Stage 1 Disinfectants/Disinfection Byproduct Rule (D/DBPR) as well as potential future compliance with the Stage 2 D/DBPR. Analysis of the data indicated that relatively few systems had experienced noncompliance with the Stage 1 D/DBPR. Of the 452 systemwide running annual averages (SRAAs) available for the seven quarters of data analyzed, only eight of the SRAAs exceeded the Stage 1 maximum contaminant level (MCL) for total THMs, and eight exceeded the MCL for the five regulated HAAs. An examination of bromine incorporation patterns among the THM and HAA species suggests that omission of several of the brominated HAA species in the reported HAA measurements in accordance with regulatory requirements ignores a significant portion of HAA exposure in some North Carolina systems.
An analysis of monitoring data for the Stage 1 Disinfectants/Disinfection Byproducts Rule
In this research, disinfection by‐product monitoring data for the period between Jan. 1, 2004, and Sept. 30, 2005, were obtained for 113 North Carolina water systems serving 10,000 or more customers. Data were analyzed to assess compliance with the trihalomethane (THM) and haloacetic acid (HAA) regulatory requirements of the Stage 1 Disinfectants/Disinfection Byproduct Rule (D/DBPR) as well as potential future compliance with the Stage 2 D/DBPR. Analysis of the data indicated that relatively few systems had experienced noncompliance with the Stage 1 D/DBPR. Of the 452 systemwide running annual averages (SRAAs) available for the seven quarters of data analyzed, only eight of the SRAAs exceeded the Stage 1 maximum contaminant level (MCL) for total THMs, and eight exceeded the MCL for the five regulated HAAs. An examination of bromine incorporation patterns among the THM and HAA species suggests that omission of several of the brominated HAA species in the reported HAA measurements in accordance with regulatory requirements ignores a significant portion of HAA exposure in some North Carolina systems.
An analysis of monitoring data for the Stage 1 Disinfectants/Disinfection Byproducts Rule
Shoaf, David R. (author) / Singer, Philip C. (author)
Journal ‐ American Water Works Association ; 99 ; 69-80
2007-10-01
12 pages
Article (Journal)
Electronic Resource
English
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