1,3-Butadiene
King County Water District #20
NOTE: King County Water District #20 purchases water from Seattle Public Utilities which is required to test for 1,3-butadiene. Sample information shown below was taken by Seattle Public Utilities.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | ND | 1 | 0 | ND |
2014 | ND | 3 | 0 | ND |
2015 | ND | 8 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
2017 | N/A | 0 | 0 | N/A |
2018 | N/A | 0 | 0 | N/A |
2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.0103 ppb
The EWG Health Guideline of 0.0103 ppb for 1,3-butadiene was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.
ppb = parts per billion
All test results
NOTE: King County Water District #20 purchases water from Seattle Public Utilities which is required to test for 1,3-butadiene. Sample information shown below was taken by Seattle Public Utilities.
Date | Lab ID | Result |
---|---|---|
2015-01-13 | 201501140525AM | ND |
2015-01-13 | 201501140778AM | ND |
2015-04-06 | 201504070229AM | ND |
2015-04-06 | 201504070359AM | ND |
2015-07-22 | 201507230496AM | ND |
2015-07-22 | 201507230482AM | ND |
2015-10-13 | 201509280091AM | ND |
2015-10-13 | 201509280090AM | ND |