Free Water Analysis

Perchlorate*

EWG Health Guideline
1 ppb
National Average
0.0919 ppb
Detected In
50 utilities

Health Risks

The EWG Health Guideline of 1 ppb for perchlorate was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hormone disruption.

Filtration Methods

Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes

Utilities That Detected This Contaminant

Utility Name State Level Detected Status
La Verne WD CA 6.5 ppb Exceeds Guideline View
River Rd. Ws #25 CA 4.4 ppb Exceeds Guideline View
East Orosi Community Services District CA 3.8 ppb Exceeds Guideline View
City of Loma Linda CA 3.29 ppb Exceeds Guideline View
Burlington Water Department MA 2.69 ppb Exceeds Guideline View
Westbury WD NY 2.51 ppb Exceeds Guideline View
Plainview WD NY 2.14 ppb Exceeds Guideline View
City of Corona CA 2.04 ppb Exceeds Guideline View
City of Colton CA 1.85 ppb Detected View
Lincoln Avenue Water Company CA 1.69 ppb Detected View
Suburban Water Systems - San Jose Hills CA 1.66 ppb Detected View
Newhall CWD-Newhall CA 1.54 ppb Detected View
Golden State Water Company - West Orange CA 1.52 ppb Detected View
Golden State WC - Placentia CA 1.44 ppb Detected View
Hicksville WD NY 1.38 ppb Detected View
City of Westminster CA 1.35 ppb Detected View
Redlands City CA 1.29 ppb Detected View
Rockville Centre NY 1.29 ppb Detected View
Bethpage WD NY 1.28 ppb Detected View
City of Riverside CA 1.27 ppb Detected View
Mccoy Rd. Ws #05 CA 1.19 ppb Detected View
Golden State Water Company (GSWC) - Florence/Graham CA 1.18 ppb Detected View
City of Garden Grove CA 1.17 ppb Detected View
City of Newman Water Department CA 1.12 ppb Detected View
City of Anaheim CA 1.11 ppb Detected View
Valley Water Company CA 1.09 ppb Detected View
Garden City NY 1.03 ppb Detected View
City of Exeter CA 1 ppb Detected View
San Fernando Water Department CA 1 ppb Detected View
California Domestic Water Company CA 0.897 ppb Detected View
City of Buena Park CA 0.886 ppb Detected View
Azusa Light and Water CA 0.877 ppb Detected View
Glen Cove City NY 0.861 ppb Detected View
Jurupa Community Services District CA 0.855 ppb Detected View
Boulder City NV 0.825 ppb Detected View
Las Vegas Valley Water District NV 0.825 ppb Detected View
North Las Vegas Utilities NV 0.825 ppb Detected View
Pomona Water Department CA 0.808 ppb Detected View
City of Santa Ana CA 0.795 ppb Detected View
Franklin Square WD NY 0.787 ppb Detected View
Citrus Heights Water District CA 0.78 ppb Detected View
Sierra Vista Association CA 0.76 ppb Detected View
San Gabriel Valley Water Company - Fontana CA 0.752 ppb Detected View
City of Chino CA 0.736 ppb Detected View
Twin Valley Inc. CA 0.725 ppb Detected View
Cal/Am Water Company - San Marino CA 0.559 ppb Detected View
City of Fullerton CA 0.551 ppb Detected View
Brock Mutual Water Company CA 0.547 ppb Detected View
Monte Vista Water District CA 0.546 ppb Detected View
Pasadena Water and Power CA 0.543 ppb Detected View