Strontium
Golden State Water Company (GSWC) - Claremont
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.
50
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 | 0.366 ppb | 26 | 26 | 0.320 ppb - 0.400 ppb |
| 2015 | 0.367 ppb | 24 | 24 | 0.310 ppb - 0.400 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 |
|---|---|---|
| 2014-07-15 | 201407150678AM | 0.320 ppb |
| 2014-07-15 | 201407150666AM | 0.380 ppb |
| 2014-07-15 | 201407150676AM | 0.340 ppb |
| 2014-07-15 | 201407150664AM | 0.400 ppb |
| 2014-07-15 | 201407150682AM | 0.380 ppb |
| 2014-07-15 | 201407150680AM | 0.360 ppb |
| 2014-07-15 | 201407150684AM | 0.340 ppb |
| 2014-07-15 | 201407150686AM | 0.340 ppb |
| 2014-07-15 | 201407150688AM | 0.360 ppb |
| 2014-07-15 | 201407150690AM | 0.330 ppb |
| 2014-07-15 | 201407150670AM | 0.380 ppb |
| 2014-07-15 | 201407150668AM | 0.370 ppb |
| 2014-07-15 | 201407150696AM | 0.370 ppb |
| 2014-07-15 | 201407150694AM | 0.400 ppb |
| 2014-07-15 | 201407150674AM | 0.400 ppb |
| 2014-07-15 | 201407150692AM | 0.340 ppb |
| 2014-07-15 | 201407150672AM | 0.400 ppb |
| 2014-10-10 | 201410100270AM | 0.350 ppb |
| 2014-10-10 | 201410100276AM | 0.380 ppb |
| 2014-10-10 | 201410100286AM | 0.380 ppb |
| 2014-10-10 | 201410100274AM | 0.320 ppb |
| 2014-10-10 | 201410100284AM | 0.350 ppb |
| 2014-10-10 | 201410100278AM | 0.400 ppb |
| 2014-10-10 | 201410100272AM | 0.360 ppb |
| 2014-10-10 | 201410100282AM | 0.390 ppb |
| 2014-10-10 | 201410100280AM | 0.370 ppb |
| 2015-01-07 | 201501070617AM | 0.360 ppb |
| 2015-01-07 | 201501070625AM | 0.330 ppb |
| 2015-01-07 | 201501070623AM | 0.360 ppb |
| 2015-01-07 | 201501070635AM | 0.310 ppb |
| 2015-01-07 | 201501070631AM | 0.370 ppb |
| 2015-01-07 | 201501070633AM | 0.400 ppb |
| 2015-01-07 | 201501070627AM | 0.370 ppb |
| 2015-01-07 | 201501070629AM | 0.380 ppb |
| 2015-01-07 | 201501070637AM | 0.350 ppb |
| 2015-01-07 | 201501070639AM | 0.390 ppb |
| 2015-01-07 | 201501070641AM | 0.360 ppb |
| 2015-01-07 | 201501070619AM | 0.350 ppb |
| 2015-01-07 | 201501070613AM | 0.350 ppb |
| 2015-01-07 | 201501070621AM | 0.400 ppb |
| 2015-01-07 | 201501070615AM | 0.400 ppb |
| 2015-04-15 | 201504150633AM | 0.380 ppb |
| 2015-04-15 | 201504150629AM | 0.350 ppb |
| 2015-04-15 | 201504150635AM | 0.370 ppb |
| 2015-04-15 | 201504150621AM | 0.400 ppb |
| 2015-04-15 | 201504150623AM | 0.370 ppb |
| 2015-04-15 | 201504150631AM | 0.360 ppb |
| 2015-04-15 | 201504150625AM | 0.350 ppb |
| 2015-04-15 | 201504150627AM | 0.390 ppb |
| 2015-04-15 | 201504150619AM | 0.360 ppb |