Strontium
City of Gilroy
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.
20
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 | 0.378 ppb | 9 | 9 | 0.260 ppb - 0.520 ppb |
| 2015 | 0.354 ppb | 11 | 10 | ND - 0.550 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 |
|---|---|---|
| 2014-01-14 | A3L2052-05A | 0.260 ppb |
| 2014-01-14 | A3L2052-17A | 0.360 ppb |
| 2014-01-14 | A3L2052-07A | 0.440 ppb |
| 2014-01-14 | A3L2052-15A | 0.380 ppb |
| 2014-01-14 | A3L2052-03A | 0.270 ppb |
| 2014-03-24 | A4C1501-01A | 0.460 ppb |
| 2014-05-27 | A4C1893-01A | 0.400 ppb |
| 2014-08-04 | A4G2633-01A | 0.310 ppb |
| 2014-09-16 | A4I0774-01A | 0.520 ppb |
| 2015-04-22 | A5D1761-03A | 0.260 ppb |
| 2015-04-22 | A5D1761-05A | 0.410 ppb |
| 2015-04-22 | A5D1760-01A | 0.420 ppb |
| 2015-04-22 | A5D1760-03A | 0.550 ppb |
| 2015-04-22 | A5D1761-01A | 0.350 ppb |
| 2015-04-22 | A5D1761-02A | ND |
| 2015-04-22 | A5D1760-05A | 0.380 ppb |
| 2015-04-22 | A5D1761-07A | 0.380 ppb |
| 2015-08-19 | A5G2521-01A | 0.360 ppb |
| 2015-08-19 | A5G2521-05A | 0.300 ppb |
| 2015-08-19 | A5G2521-03A | 0.480 ppb |