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National Drinking Water Database

National Drinking Water Database - Chemical Contaminants

The Most Polluted Communities

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

Ranked by population

RankSystem Population Served Positive test results of total reported tests Average Level
1Cash Wsc
Greenville, TX
14,7362 of 31.67 ppb
(0 to 3.7 ppb)
2City of Bonham
Bonham, TX
10,5431 of 21.2 ppb
(0 to 2.4 ppb)
3East Cedar Creek Fwsd Brookshire
Mabank, TX
9,6991 of 20.6 ppb
(0 to 1.2 ppb)
4City of Marlin
Marlin, TX
6,6001 of 30.83 ppb
(0 to 2.5 ppb)