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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Heptanal


Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.

Heptanal is a synthetic chemical used in cosmetics and flavors and is also used as a chemical intermediate.

 
Detected
Found above
health guidelines
Found above
legal limit
States
1
-
-
Water utilities
2
-
-
People Served
1,147
-
-

Heptanal Exposure by State

Water utilities in 1 states have reported detecting Heptanal in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Heptanal contamination
SystemsPopulation
Texas21,147
Total21,147

The Most Polluted Communities

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

Ranked by highest average Heptanal level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Arroyo Wsc
Rio Hondo, TX
8471 of 11.23 ppb
(1.23 ppb)
2Paradise Point Water Supply Co
Tow, TX
3001 of 11 ppb
(1 ppb)

Testing Summary for Heptanal

Are tests routinely required for Heptanal by federal law?No
Water suppliers reporting tests for Heptanal (2005-2006):2 of 47,576
Average testing rate for water supplier reporting tests (2005-2006):0.5 per year