Dieldrin

Natick Water Department

Dieldrin is a highly toxic insecticide that was banned in the 1970s due to its persistence in the environment and toxicity to people and wildlife.

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Year	Average result	Samples taken	Range of results
2013	N/A	0	N/A
2014	N/A	0	N/A
2015	N/A	0	N/A
2016	ND	4	ND
2017	N/A	0	N/A
2018	N/A	0	N/A
2019	ND	8	ND

ppb = parts per billion