Contaminant occurrence support document for category 2 contaminants for the second six-year review of national primary drinking water regulations
HERO ID
3841324
Reference Type
Technical Report
Subtype
EPA Report
Year
2009
Language
English
| HERO ID | 3841324 |
|---|---|
| Material Type | EPA Report |
| Year | 2009 |
| Title | Contaminant occurrence support document for category 2 contaminants for the second six-year review of national primary drinking water regulations |
| Authoring Organization | U.S. Environmental Protection Agency |
| Publisher Text | U.S. Environmental Protection Agency, Office of Water |
| City | Washington, D.C. |
| Abstract | This document provides occurrence-related background information on 47 regulated drinking water contaminants in support of the Environmental Protection Agency’s (EPA’s) second Six-Year Review of National Primary Drinking Water Regulations (the “second Six-Year Review”). For the second Six-Year Review, these 47 regulated contaminants are referred to as the “Category 2” contaminants. The “Category 1” contaminants (discussed in a separate report) are those regulated contaminants with relatively high rates of occurrence at or near concentration thresholds of concern, new or ongoing health effects assessments; and potential new laboratory analytical capabilities. The Category 2 contaminants discussed in this report are the regulated contaminants that meet some, but not all, of the occurrence, health effects, or laboratory analytical factors defining the Category 1 contaminants. For example, some Category 2 contaminants might exhibit moderately high occurrence nationally, but research on their health effects is still in progress and has not yet concluded. A list of the 47 regulated contaminants assessed here is included in this document’s Table of Contents. This support document is divided into contaminant-specific chapters. The individual contaminant chapters include background information (regulatory history, general chemical information, and environmental fate and behavior), use and environmental release information, an overview of occurrence in ambient water, and national estimates of contaminant occurrence in public drinking water systems. The national drinking water occurrence estimates presented here are based on the data contained in the National Compliance Monitoring Information Collection Request Dataset for the Second Six-Year Review (the “Six Year Review-ICR Dataset”), which includes data collected from 1998 to 2005. This is the largest and most comprehensive drinking water contaminant dataset ever compiled by EPA’s Drinking Water Program and includes 15 million records for 69 regulated contaminants submitted by 47 states/primacy agencies (45 states plus Region 8 and Region 9 tribes). Using this dataset, a variety of occurrence estimates were generated to characterize the national occurrence of regulated contaminants in public water systems (PWSs). |
| Report Number | EPA-815-B-09-011 |
| Url | https://www.epa.gov/sites/production/files/2014-12/documents/815b09011.pdf |
| Is Certified Translation | No |
| Dupe Override | No |
| Number Of Pages | 374 |
| Is Public | Yes |
| Language Text | English |
| Relationship(s) |
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