Supporting Safe Drinking Water Act Compliance on Tribal Lands

Photo of water towers

Project Brief

The U.S. Environmental Protection Agency helps tribal governments and utilities implement the Safe Drinking Water Act on tribal lands. When EPA’s Region 9 needed further capabilities for its SDWA support at the Navajo Nation in New Mexico, it turned to ERG. ERG assisted with inspection of the Nation’s public water system; collected samples from source water and taps; prepared and delivered samples to SDWA-certified laboratories for analysis for total coliform, E. coli, nitrates/nitrites, cyanide, mercury, total metals, fluoride, and sodium; and developed a technical report summarizing the results. This work confirmed that the Navajo Nation’s drinking water met SDWA requirements.


U.S. Environmental Protection Agency