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EWG's Tap Water Database — 2019 UPDATE

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Caffeine

Washington Aqueduct Division

Caffeine, from coffee and other beverages, is a key indicator of water contamination from wastewater effluent.

 

50

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.00875 ppb81ND - 0.0700 ppb
2013ND80ND
2014ND80ND
2015ND80ND
2016ND80ND
20170.0800 ppb101ND - 0.800 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-01McMillan0.0700 ppb
2012-01-01DalecarliaND
2012-04-01DalecarliaND
2012-04-01McMillanND
2012-07-01DalecarliaND
2012-07-01McMillanND
2012-10-01DalecarliaND
2012-10-01McMillanND
2013-01-01DalecarliaND
2013-01-01McMillanND
2013-04-01DalecarliaND
2013-04-01McMillanND
2013-07-01McMillanND
2013-07-01DalecarliaND
2013-10-01DalecarliaND
2013-10-01McMillanND
2014-01-01DalecarliaND
2014-01-01McMillanND
2014-04-01DalecarliaND
2014-04-01McMillanND
2014-07-01DalecarliaND
2014-07-01McMillanND
2014-10-01DalecarliaND
2014-10-01McMillanND
2015-01-01DalecarliaND
2015-01-01McMillanND
2015-04-01DalecarliaND
2015-04-01McMillanND
2015-07-01DalecarliaND
2015-07-01McMillanND
2015-10-01McMillanND
2015-10-01DalecarliaND
2016-01-01DalecarliaND
2016-01-01McMillanND
2016-04-01DalecarliaND
2016-04-01McMillanND
2016-07-01DalecarliaND
2016-07-01McMillanND
2016-10-01McMillanND
2016-10-01DalecarliaND
2017-01-01DalecarliaND
2017-01-01McMillanND
2017-04-01DalecarliaND
2017-04-01McMillanND
2017-07-01DalecarliaND
2017-07-01McMillan0.800 ppb
2017-10-01DalecarliaND
2017-10-01McMillanND
2017-12-01DalecarliaND
2017-12-01McMillanND