The Power of Information

National Drinking Water Database

Merphos in California

Merphos is an organophosphorus compound used for pesticide manufacturing; millions of pounds are produced annually.

The Most Polluted Communities in California

1 water utilities reported detecting Merphos in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Merphos level

RankSystem Population Served Positive test results of total reported tests Average Level
1Brock Mutual Water Company
Bakesrfield, CA
3001 of 12.15 ppb
(2.15 ppb)

Health Based Limits for Merphos

There are no health based standards that EWG is using for this chemical

Violation Summary for Merphos in California

There are no violations reported for this contaminant in California