Know Your Environment. Protect Your Health.

Heptachlor

Arizona Water Company - Sierra Vista

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

 

29

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND140ND
2019N/A00N/A
2020N/A00N/A
20210.0188 ppb152ND - 0.230 ppb
2022N/A00N/A
2023N/A00N/A

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

Date Lab ID Result
2018-01-23201801240105SND
2018-01-23201801240106SND
2018-01-23201801240107SND
2018-01-23201801240108SND
2018-01-23201801240109SND
2018-01-23201801240110SND
2018-01-23201801240104SND
2018-07-25201807250636SND
2018-07-25201807250647SND
2018-07-25201807250646SND
2018-07-25201807250645SND
2018-07-25201807250644SND
2018-07-25201807250643SND
2018-07-25201807250635SND
2021-05-2021E2311-01 SOCND
2021-05-2021E2311-07SOCND
2021-05-2021E2311-06SOCND
2021-05-2021E2311-05SOCND
2021-05-2021E2311-03 SOCND
2021-05-2021E2311-02 SOCND
2021-11-1621K2237-010.230 ppb
2021-11-1621K2237-02ND
2021-11-1621K2237-030.0520 ppb
2021-11-1721K2431-01ND
2021-11-1721K2431-02ND
2021-11-1721K2431-03ND
2021-11-1721K2431-04ND
2021-12-0821L1169-01ND
2021-12-2221L2776-01ND