Know Your Environment. Protect Your Health.

4,4'-dde

College Place Water Department

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020N/A00N/A
2021N/A00N/A
2022ND40ND
2023ND30ND

ppb = parts per billion

All test results

Date Lab ID Result
2018-06-25ND
2018-06-25ND
2019-09-17ND
2019-09-17ND
2022-05-314364682ND
2022-08-224364686ND
2022-08-224364685ND
2022-11-014373087ND
2023-02-064411984ND
2023-08-294512981ND
2023-12-124560258ND