Strontium

City of Shafter

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.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	0.623 ppb	12	12	0.370 ppb - 0.770 ppb
2014	0.763 ppb	12	12	0.400 ppb - 1.10 ppb
2015	N/A	0	0	N/A
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
2013-09-19	A3H1649-10A	0.720 ppb
2013-09-19	A3H1649-08A	0.480 ppb
2013-09-19	A3H1649-06A	0.700 ppb
2013-09-19	A3H1649-01A	0.370 ppb
2013-09-19	A3H1649-17A	0.570 ppb
2013-09-19	A3H1649-12A	0.640 ppb
2013-11-07	A3J2457-11A	0.750 ppb
2013-11-07	A3J2457-03A	0.580 ppb
2013-11-07	A3J2457-07A	0.770 ppb
2013-11-07	A3J2457-01A	0.760 ppb
2013-11-07	A3J2457-05A	0.640 ppb
2013-12-23	A3L0626-01A	0.490 ppb
2014-04-08	A4B1765-16A	0.780 ppb
2014-04-08	A4B1765-28A	0.430 ppb
2014-04-08	A4B1765-20A	0.770 ppb
2014-04-08	A4B1765-22A	0.660 ppb
2014-04-08	A4B1765-24A	0.740 ppb
2014-04-08	A4B1765-18A	0.800 ppb
2014-04-08	A4B1765-04A	0.790 ppb
2014-04-08	A4B1765-06A	0.850 ppb
2014-04-08	A4B1765-10A	1.10 ppb
2014-04-08	A4B1765-12A	0.730 ppb
2014-04-08	A4B1765-08A	1.10 ppb
2014-05-13	A4E0469-01A	0.400 ppb