Endothall

City of Denham Springs Water System

Endothall is a herbicide used to kill aquatic plants and algae. It's also used on potato and cotton crops.

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	14	ND
2015	ND	2	ND
2016	N/A	0	N/A
2017	ND	8	ND
2018	ND	2	ND
2019	N/A	0	N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 94 ppb

The EWG Health Guideline of 94 ppb for endothall 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 harm to the stomach and intestines.

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for endothall, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1960s.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-06-17	AD92289	ND
2014-06-17	AD92285	ND
2014-06-17	AD92289	ND
2014-06-17	AD92288	ND
2014-06-17	AD92287	ND
2014-06-17	AD92286	ND
2014-06-17	AD92285	ND
2014-06-17	AD92286	ND
2014-06-17	AD92287	ND
2014-06-17	AD92288	ND
2014-06-24	AD92626	ND
2014-06-24	AD92626	ND
2014-12-08	AE00303	ND
2014-12-08	AE00303	ND
2015-09-16	35207899001	ND
2015-09-16	35207899001	ND
2017-07-17	35325021001	ND
2017-07-17	35325021004	ND
2017-07-17	35325021003	ND
2017-07-17	35325021002	ND
2017-07-17	35325021001	ND
2017-07-17	35325021004	ND
2017-07-17	35325021003	ND
2017-07-17	35325021002	ND
2018-01-29	35371221001	ND
2018-01-29	35371221001	ND