Know Your Environment. Protect Your Health.

DCPA di-acid degradate

College Place Water Department

DCPA di-acid degradate is a residue of the herbicide dacthal, or DCPA, which is used for urban, household and agricultural applications. Dacthal is a possible human carcinogen whose use was limited by the EPA in 2005 due to concerns about water contamination.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020N/A00N/A
20210.180 ppb110.180 ppb
20220.150 ppb42ND - 0.380 ppb
20230.312 ppb440.202 ppb - 0.497 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2018-06-25ND
2019-05-28ND
2021-12-0142318340.180 ppb
2022-05-3143699580.380 ppb
2022-06-144309373ND
2022-08-094331460ND
2022-11-0143730860.219 ppb
2023-02-0644119820.343 ppb
2023-04-2444485910.497 ppb
2023-08-2945078090.207 ppb
2023-10-2345386090.202 ppb