Strontium
Derry Water Department
Strontium is a metal that accumulates in the bones. Radioactive strontium-90 can cause bone cancer and leukemia, and any form of strontium at high doses can harm bone health.
8
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 | 0.0476 ppb | 8 | 8 | 0.0410 ppb - 0.0520 ppb |
| 2015 | 0.0537 ppb | 8 | 8 | 0.0482 ppb - 0.0599 ppb |
| 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 1,500 ppb
The EWG Health Guideline of 1,500 ppb for strontium was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against harm to bones.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-03-04 | 35179044003AM | 0.0577 ppb |
| 2015-03-04 | 35179044001AM | 0.0493 ppb |
| 2015-06-03 | 35192587001AM | 0.0482 ppb |
| 2015-06-03 | 35192587003AM | 0.0564 ppb |
| 2015-11-05 | 35215616003AM | 0.0599 ppb |
| 2015-11-05 | 35215616001AM | 0.0489 ppb |
| 2015-12-09 | 35220725003AM | 0.0592 ppb |
| 2015-12-09 | 35220725001AM | 0.0496 ppb |