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EWG's Tap Water Database — 2021 UPDATE

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4,4'-dde

Nob Hill Water Association

 

4

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND20ND
2019ND20ND

ppb = parts per billion

All test results

Date Lab ID Result
2018-06-06ND
2018-06-06ND
2019-05-14ND
2019-05-14ND