Dalapon

Montrose, City of

The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Year	Average result	Samples taken	Detections	Range of results
2014	ND	1	0	ND
2015	N/A	0	0	N/A
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	0.250 ppb	8	2	ND - 1.000 ppb
2019	0.200 ppb	10	2	ND - 1.000 ppb

ppb = parts per billion

EPA Maximum Contaminant
Level (MCL) 200 ppb

The legal limit for dalapon, established in 1992, was based on a toxicity study in laboratory animals published in 1960.

ppb = parts per billion