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EWG's Tap Water Database — 2021 UPDATE

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Toxaphene

City of Houston Utility District 5 - Kingwood

Toxaphene is a neurotoxic, persistent and bioaccumulative insecticide classified by the EPA as a probable human carcinogen.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND10ND
2015ND40ND
2016ND20ND
2017ND20ND
2018ND40ND
2019ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.03 ppb

The EWG Health Guideline of 0.03 ppb for toxaphene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 3 ppb

The legal limit for toxaphene, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to toxaphene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-15AC64084ND
2015-01-16AC76657ND
2015-06-08AC95033ND
2015-06-08AC95034ND
2015-06-08AC95035ND
2016-03-09AD28037ND
2016-04-05AD31891ND
2017-04-27AD81610ND
2017-04-27AD81591ND
2018-01-31AE12002ND
2018-01-31AE12023ND
2018-01-31AE12003ND
2018-01-31AE11999ND
2019-01-22AE50788ND
2019-03-12AE58135ND
2019-04-11AE62162ND
2019-07-22AE75409ND
2019-10-11AE86503ND