DDT
St Charles
24
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 | 0.00527 ppb | 11 | 1 | ND - 0.0580 ppb |
| 2016 | ND | 1 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 9 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-08-18 | 1508E43-004B | ND |
| 2015-08-18 | 1508E43-007B | ND |
| 2015-08-18 | 1508E43-010B | ND |
| 2015-08-18 | 1508E43-013B | ND |
| 2015-08-18 | 1508E43-016B | ND |
| 2015-11-17 | 1511D17-001B | 0.0580 ppb |
| 2015-11-18 | 1511E63-003B | ND |
| 2015-11-18 | 1511E63-005B | ND |
| 2015-11-18 | 1511E63-007B | ND |
| 2015-11-18 | 1511E63-001B | ND |
| 2015-11-19 | 1511E82-001B | ND |
| 2016-10-26 | 6104200-01 | ND |
| 2018-08-09 | 8081943-05 | ND |
| 2018-08-09 | 8081943-04 | ND |
| 2018-08-09 | 8081943-01 | ND |
| 2018-10-30 | 8105673-01 | ND |
| 2018-10-30 | 8105673-03 | ND |
| 2018-10-30 | 8105673-05 | ND |
| 2018-11-05 | 8110572-01 | ND |
| 2018-12-13 | 8122599-01 | ND |
| 2018-12-13 | 8122599-02 | ND |
| 2019-09-04 | 9090566-05 | ND |
| 2019-09-04 | 9090566-03 | ND |
| 2019-09-04 | 9090566-01 | ND |