1,3-Butadiene
Helena Water System
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | ND | 5 | 0 | ND |
2014 | ND | 4 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
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
Date | Lab ID | Result |
---|---|---|
2013-07-08 | 729681-9301 | ND |
2013-07-08 | 729691-9301 | ND |
2013-07-08 | 729689-9301 | ND |
2013-10-02 | 750328-9933 | ND |
2013-10-02 | 750326-9933 | ND |
2014-01-16 | 766870-10584 | ND |
2014-01-16 | 766872-10584 | ND |
2014-04-16 | 781016-11187 | ND |
2014-04-16 | 781014-11187 | ND |