Cyanazine (Bladex)
St. Louis City
Cyanazine, a cancer-causing chemical related to the herbicide atrazine, has been phased out of use in the U.S. since 1995. Cyanazine has been also linked to birth defects and damage to the central nervous system.
18
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 1 ppb
The EWG Health Guideline of 1 ppb for cyanazine was defined by the Environmental Protection Agency as a lifetime health-based limit for effects other than cancer. This health guideline protects against .
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-06-02 | AC23739 | ND |
| 2014-06-02 | AC23738 | ND |
| 2015-03-17 | AC44661 | ND |
| 2015-03-17 | AC44660 | ND |
| 2015-06-01 | AC47107 | ND |
| 2015-06-01 | AC47106 | ND |
| 2016-06-06 | AC75865 | ND |
| 2016-06-06 | AC75864 | ND |
| 2017-05-19 | AC98045 | ND |
| 2017-05-19 | AC98044 | ND |
| 2017-06-21 | AC99039 | ND |
| 2017-06-21 | AC99038 | ND |
| 2017-09-11 | AD07442 | ND |
| 2017-09-11 | AD07443 | ND |
| 2018-05-21 | AD20859 | ND |
| 2018-05-21 | AD20860 | ND |
| 2019-05-28 | AD47824 | ND |
| 2019-05-28 | AD47825 | ND |