Picloram

Southwest Ouachita Waterworks Inc.

Picloram is a herbicide that in studies of laboratory animals has been linked with reduced testicular size and damage to the liver and thyroid.

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
2014	ND	16	ND
2015	ND	2	ND
2016	N/A	0	N/A
2017	ND	14	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 166 ppb

The EWG Health Guideline of 166 ppb for picloram 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 change to internal organs.

EPA Maximum Contaminant
Level (MCL) 500 ppb

The legal limit for picloram, established in 1992, was based on toxicity studies in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-06-16	AD92414	ND
2014-06-16	AD92413	ND
2014-06-16	AD92414	ND
2014-06-16	AD92413	ND
2014-08-11	AD95317	ND
2014-08-11	AD95317	ND
2014-08-11	AD95318	ND
2014-08-11	AD95318	ND
2014-10-20	AD98780	ND
2014-10-20	AD98781	ND
2014-10-20	AD98782	ND
2014-10-20	AD98783	ND
2014-10-20	AD98783	ND
2014-10-20	AD98782	ND
2014-10-20	AD98781	ND
2014-10-20	AD98780	ND
2015-01-05	AE00867	ND
2015-01-05	AE00867	ND
2017-06-12	35318592003	ND
2017-06-12	35318592002	ND
2017-06-12	35318592001	ND
2017-06-12	35318592001	ND
2017-06-12	35318592002	ND
2017-06-12	35318592003	ND
2017-10-16	35343270001	ND
2017-10-16	35343270004	ND
2017-10-16	35343270003	ND
2017-10-16	35343270002	ND
2017-10-16	35343270001	ND
2017-10-16	35343270004	ND
2017-10-16	35343270003	ND
2017-10-16	35343270002	ND