Picloram

Bethesda WSC

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

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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	11	ND
2015	N/A	0	N/A
2016	ND	4	ND
2017	ND	11	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
2014-06-13	Q1421328007	ND
2014-06-13	Q1421328006	ND
2014-10-07	Q1451274032	ND
2014-10-07	Q1451274031	ND
2014-10-07	Q1451274030	ND
2014-10-07	Q1451274029	ND
2014-10-07	Q1451274028	ND
2014-10-07	Q1451274027	ND
2014-10-07	Q1451274026	ND
2014-10-07	Q1451274025	ND
2014-10-07	Q1451274024	ND
2016-11-08	Q1648213014	ND
2016-11-08	Q1648213015	ND
2016-11-08	Q1648213013	ND
2016-11-08	Q1648213012	ND
2017-01-31	Q1704122001	ND
2017-01-31	Q1704122023	ND
2017-10-17	Q1753293027	ND
2017-10-17	Q1753293018	ND
2017-10-17	Q1753293048	ND
2017-10-17	Q1753293017	ND
2017-10-17	Q1753293047	ND
2017-10-17	Q1753293016	ND
2017-11-01	Q1756223008	ND
2017-11-01	Q1756223032	ND
2017-11-01	Q1756223031	ND