Environmental Issues > Water Main Page > All Water Documents
Arsenic and Old Laws
A Scientific and Public Health Analysis of Arsenic Occurrence in Drinking Water, Its Health Effects, and EPA's Outdated Arsenic Tap Water Standard
Top of Report
NATIONAL ARSENIC OCCURRENCE MAP
This map is intended to show the general areas that are hardest hit by the highest levels of arsenic. However, to determine whether arsenic has been found in a particular public water system, according to data reported to the U.S. Environmental Protection Agency, refer to the table of water systems reported in Appendix A. The map cannot be used by itself to identify whether a particular water system has an arsenic problem, because often there are several water systems located immediately adjacent to each other, and the map was generated at a scale that cannot be used to identify precisely which water system contains a given level of arsenic.

Sign up for NRDC's online newsletter
Water on Switchboard
NRDC experts write about water efficiency, green infrastructure and climate on the NRDC blog.
Recent Water Posts
- State's Refusal to Use Sound Science Continues to Delay the Bay Delta Conservation Plan
- posted by Doug Obegi, 4/29/13
- Floods, Droughts and Agriculture
- posted by Ben Chou, 4/29/13
- Home Run! Appeals Court Upholds EPA Action to Stop Giant, Polluting Mountaintop Removal Mine
- posted by Jon Devine, 4/25/13
NRDC Gets Top Ratings from the Charity Watchdogs

- Charity Navigator awards NRDC its 4-star top rating.
- Worth magazine named NRDC one of America's 100 best charities.
- NRDC meets the highest standards of the Wise Giving Alliance of the Better Business Bureau.


