The Power of Information

National Drinking Water Database

Glyoxal in California

Glyoxal is a synthetic chemical used for production of paper coatings, textiles and polymers and as an intermediate for making other chemicals; it is used as a disinfectant in medicine and may form as a byproduct of tap water ozonation.

The Most Polluted Communities in California

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

Ranked by highest average Glyoxal level

RankSystem Population Served Positive test results of total reported tests Average Level
1Valley County Water Dist.
Baldwin Park, CA
55,0002 of 25.1 ppb
(3.2 to 7 ppb)
2San Gabriel Valley Water Co.-El Monte
El Monte, CA
153,6576 of 113.75 ppb
(0 to 16 ppb)
3South Tahoe Pud - Main
South Lake Tahoe, CA
60,0005 of 150.65 ppb
(0 to 5.2 ppb)

Health Based Limits for Glyoxal

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

Violation Summary for Glyoxal in California

There are no violations reported for this contaminant in California