EWG's Tap Water Database — 2021 UPDATE



Milo Public Water Supply

1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20140.700 ppb110.700 ppb
20150.733 ppb660.600 ppb - 0.900 ppb
20160.600 ppb220.600 ppb
20170.567 ppb330.500 ppb - 0.600 ppb
20180.675 ppb440.600 ppb - 0.700 ppb
20190.700 ppb770.500 ppb - 0.900 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for cis-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-12-1520981890.700 ppb
2016-03-16OE3558560.600 ppb
2016-03-16OE3558550.600 ppb