EWG Official Report — Boise Idaho

WHAT’S ACTUALLY IN BOISE WATER

Boise has the most contaminants above EWG guidelines of any city in Idaho. Verified results from independent scientists.

Common Questions

FAQ

EWG Official Report — Sacramento

WHAT’S ACTUALLY IN YOUR WATER

The Environmental Working Group independently tested Sacramento city tap water. Sacramento’s water utility serves over 500,000 people. The water is sourced from the American River and Sacramento River. EWG found 36 contaminants. 15 exceed EWG health guidelines. The City of Sacramento reports zero legal violations. Legal does not equal safe. Federal limits have not been updated in almost 20 years.

EWG Official Report — Folsom, CA

WHAT’S ACTUALLY IN FOLSOM WATER

Folsom gets 100% of its drinking water from Folsom Lake. Treated at the Folsom Water Treatment Plant. Serves over 80,000 residents. The City reports zero legal violations. Legal does not equal safe.

EWG independent testing found 6 contaminants in Folsom tap water. Every single one exceeds EWG health advocacy guidelines.

EWG Official Report — Roseville, CA

WHAT’S ACTUALLY IN ROSEVILLE WATER

The Environmental Working Group independently tested City of Roseville tap water. Roseville’s water utility serves 149,859 people. Water sourced from Folsom Lake surface water.

What Gets Through In Rocklin

CLEANER SOURCE. NOT CLEAN ENOUGH.

Rocklin is served by Placer County Water Agency’s Foothill system. PCWA Foothill draws from the Yuba and Bear River watersheds, Lake Spaulding, and the American River. The water is genuinely cleaner than most California systems. That is the truth.

Here is the other truth. EWG independent testing still flags disinfection byproducts in PCWA Foothill water. Every surface-water system that adds chlorine creates them. Rocklin is no exception.

EWG Official Report — Elk Grove, CA

WHAT’S ACTUALLY IN ELK GROVE WATER

The Environmental Working Group tested Elk Grove Water Service data from the California State Water Resources Control Board. Elk Grove draws from groundwater wells. 22 total contaminants detected. 8 exceed EWG health guidelines. The City reports full legal compliance. Legal does not equal safe. Federal limits have not been updated in almost 20 years.

What EWG Found — Granite Bay, CA

GOOD SOURCE WATER. NOT CLEAN ENOUGH.

Granite Bay is served by Placer County Water Agency’s Foothill system. PCWA draws from the Yuba River, Bear River, Lake Spaulding, and the American River. The source water is genuinely cleaner than most California systems.

But every surface water system that adds chlorine to kill bacteria creates disinfection byproducts. PCWA Foothill is no exception. EWG independent testing found cancer-linked trihalomethanes, haloacetic acids, and chromium-6 above health guidelines in PCWA Foothill water.

EWG Official Report — Lincoln, CA

WHAT’S ACTUALLY IN LINCOLN WATER

City of Lincoln draws from groundwater wells and a mix of surface water sources in Placer County. EWG independent testing through the California State Water Resources Control Board found contaminants including a banned agricultural pesticide that persists in Lincoln’s groundwater more than four decades after it was prohibited.

EWG Official Report — Davis, CA

WHAT’S ACTUALLY IN DAVIS WATER

City of Davis water is sourced from Sacramento River surface water and groundwater wells in Yolo County. Davis uses an advanced ozone treatment process, which is more effective than standard chlorination at killing pathogens. But ozone treatment comes with a tradeoff. When ozone reacts with naturally occurring bromide in the source water, it creates bromate, a known carcinogen.

EWG independent testing found arsenic, chromium-6, bromate, and chlorate all above EWG health guidelines in Davis tap water.