Know Your Environment. Protect Your Health.

Heptachlor

City of River Oaks

NOTE: City of River Oaks purchases water from City of Fort Worth which is required to test for heptachlor. Sample information shown below was taken by City of Fort Worth.

Heptachlor is an insecticide used for termite control until 1988. It is linked to cancer, hormone disruption and neurotoxicity.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND40ND
2021ND10ND
2022ND30ND
2023ND50ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.008 ppb

The EWG Health Guideline of 0.008 ppb for heptachlor 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): 0.4 ppb

The legal limit for heptachlor, 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 heptachlor exposure.

ppb = parts per billion

All test results

NOTE: City of River Oaks purchases water from City of Fort Worth which is required to test for heptachlor. Sample information shown below was taken by City of Fort Worth.

Date Lab ID Result
2018-01-24Q1802705006ND
2018-01-24Q1802705007ND
2018-01-24Q1802705005ND
2018-03-20Q1811001002ND
2018-03-20Q1811001006ND
2019-01-23Q1903345004ND
2019-04-24Q1916570021ND
2019-05-22Q1927658003ND
2019-05-22Q1927658010ND
2019-06-17Q1936867002ND
2019-07-24Q1947967024ND
2019-10-23Q1973436019ND
2020-01-22Q2002459003ND
2020-01-22Q2002459029ND
2020-04-22Q2016071001ND
2020-04-22Q2016071002ND
2021-01-20Q2101402001ND
2021-01-20Q2101402002ND
2021-01-20Q2101402007ND
2021-04-21Q2110318001ND
2022-01-19Q2201985001ND
2022-05-19Q2214821001ND
2022-05-19Q2214821002ND
2023-01-04Q2300420005ND
2023-03-21Q2310673006ND
2023-03-21Q2310673007ND
2023-03-21Q2310673008ND
2023-03-21Q2310673018ND