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National Drinking Water Database

Methyl isobutyl ketone in California

Methyl isobutyl ketone (4-Methyl-2-pentanone) is an industrial chemical used in the production of paints, pesticides, textiles, inks and rubber.

The Most Polluted Communities in California

2 water utilities reported detecting Methyl isobutyl ketone in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Methyl isobutyl ketone level

RankSystem Population Served Positive test results of total reported tests Average Level
1City of Galt
Galt, CA
22,9821 of 10.73 ppb
(0.73 ppb)
2Yucaipa Valley WD Id-A&2
Yucaipa, CA
34,0001 of 480.32 ppb
(0 to 15.5 ppb)

Health Based Limits for Methyl isobutyl ketone

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

Violation Summary for Methyl isobutyl ketone in California

There are no violations reported for this contaminant in California