Dalapon

Montgomery County Municipal Utility District 127

NOTE: Montgomery County Municipal Utility District 127 purchases water from Montgomery County Municipal Utility District 115 which is required to test for dalapon. Sample information shown below was taken by Montgomery County Municipal Utility District 115.

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

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	2	ND
2015	ND	2	ND
2016	ND	1	ND
2017	ND	1	ND
2018	ND	1	ND
2019	ND	8	ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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

All test results

Date	Lab ID	Result
2014-06-23	AC57684	ND
2014-06-23	AC57683	ND
2015-07-20	AD00097	ND
2015-07-20	AD00098	ND
2016-09-13	AD49138	ND
2016-09-13	AD49135	ND
2017-09-06	AD94889	ND
2017-09-06	AD94894	ND
2018-07-26	AE34670	ND
2018-07-26	AE34671	ND
2018-09-11	AE39540	ND
2018-09-11	AE39563	ND
2018-11-30	AE47577	ND
2018-11-30	AE47578	ND
2019-02-13	AE54290	ND
2019-02-13	AE54292	ND
2019-05-21	AE67354	ND
2019-05-21	AE67353	ND
2019-09-05	AE82234	ND
2019-09-05	AE82232	ND
2019-11-21	AE90135	ND
2019-11-21	AE90139	ND