1,3-Butadiene
Westerly Water Department
14
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 14 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2015-03-30 | 3215891 | ND |
| 2015-03-30 | 3215802 | ND |
| 2015-03-30 | 3215834 | ND |
| 2015-03-30 | 3215900 | ND |
| 2015-03-30 | 3215793 | ND |
| 2015-03-30 | 3215811 | ND |
| 2015-03-30 | 3215844 | ND |
| 2015-09-16 | 3324210 | ND |
| 2015-09-16 | 3324040 | ND |
| 2015-09-16 | 3323692 | ND |
| 2015-09-16 | 3323715 | ND |
| 2015-09-16 | 3323746 | ND |
| 2015-09-16 | 3323881 | ND |
| 2015-09-16 | 3323890 | ND |