Methoxychlor

Waikoloa

Methoxychlor is an endocrine-disrupting, neurotoxic insecticide similar to DDT. Banned in the U.S. in 2002, methoxychlor was historically used on farm animals and in animal feed, lumber, gardens and agricultural crops.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2013	N/A	0	N/A
2014	ND	18	ND
2015	N/A	0	N/A
2016	N/A	0	N/A
2017	ND	6	ND
2018	N/A	0	N/A
2019	N/A	0	N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.09 ppb

The EWG Health Guideline of 0.09 ppb for methoxychlor 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 hormone disruption.

EPA Maximum Contaminant
Level (MCL) 40 ppb

The legal limit for methoxychlor, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-08-18	201408190818	ND
2014-08-18	201408190804	ND
2014-08-18	201408190818	ND
2014-08-18	201408190804	ND
2014-09-08	C14-09-0036	ND
2014-09-08	C14-09-0035A	ND
2014-09-08	C14-09-0036	ND
2014-09-08	C14-09-0035A	ND
2014-09-15	201409180857	ND
2014-09-15	201409180857	ND
2014-11-10	201411110095	ND
2014-11-10	201411110094	ND
2014-11-10	201411110094	ND
2014-11-10	201411110095	ND
2014-12-01	C14-12-0047	ND
2014-12-01	C14-12-0048	ND
2014-12-01	C14-12-0047	ND
2014-12-01	C14-12-0048	ND
2017-04-10		ND
2017-04-10		ND
2017-07-17		ND
2017-07-17		ND
2017-08-16		ND
2017-08-16		ND