1,3-Butadiene
Tarrytown Water Supply
NOTE: Tarrytown Water Supply purchases water from New York City System which is required to test for 1,3-butadiene. Sample information shown below was taken by New York City System.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | ND | 3 | 0 | ND |
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 3 | 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: Tarrytown Water Supply purchases water from New York City System which is required to test for 1,3-butadiene. Sample information shown below was taken by New York City System.
| Date | Lab ID | Result |
|---|---|---|
| 2013-12-10 | 201312110816AM | ND |
| 2013-12-10 | 201312110609AM | ND |
| 2013-12-10 | 201312110762AM | ND |
| 2014-03-11 | 201403120478AM | ND |
| 2014-03-11 | 201403120608AM | ND |
| 2014-03-11 | 201403120580AM | ND |
| 2014-06-24 | 201406250133AM | ND |
| 2014-06-24 | 201406250381AM | ND |
| 2014-06-24 | 201406250127AM | ND |
| 2014-09-23 | 201409240402AM | ND |
| 2014-09-23 | 201409240447AM | ND |
| 2014-09-23 | 201409240450AM | ND |
| 2015-06-25 | 201505020407AM | ND |
| 2015-09-23 | 201508080112AM | ND |
| 2015-12-08 | 201511070106AM | ND |