1,3-Butadiene
City of Redmond Water System
12
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 | ND | 9 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2014-06-25 | A4E1998-16A | ND |
| 2014-06-25 | A4E1998-21A | ND |
| 2014-06-25 | A4E1998-11A | ND |
| 2014-06-25 | A4E1998-01A | ND |
| 2014-09-24 | A4H1630-01A | ND |
| 2014-12-17 | A4K1348-01A | ND |
| 2014-12-17 | A4K1345-11A | ND |
| 2014-12-17 | A4K1345-01A | ND |
| 2014-12-17 | A4K1345-06A | ND |
| 2015-03-04 | A5B1435-01A | ND |
| 2015-08-18 | A5G2132-01A | ND |
| 2015-12-15 | A5K1615-01A | ND |