Strontium

City of Porterville

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	0.273 ppb	35	35	0.180 ppb - 0.410 ppb
2014	0.255 ppb	35	35	0.120 ppb - 0.370 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
2013-09-16	B3I1567-01	0.200 ppb
2013-09-16	B3I1567-04	0.300 ppb
2013-09-16	B3I1567-10	0.330 ppb
2013-09-16	B3I1567-16	0.340 ppb
2013-09-16	B3I1567-23	0.270 ppb
2013-09-16	B3I1567-19	0.290 ppb
2013-09-16	B3I1567-21	0.280 ppb
2013-09-16	B3I1567-07	0.330 ppb
2013-09-16	B3I1567-13	0.270 ppb
2013-09-17	B3I1806-28	0.260 ppb
2013-09-17	B3I1806-04	0.270 ppb
2013-09-17	B3I1806-13	0.320 ppb
2013-09-17	B3I1806-25	0.380 ppb
2013-09-17	B3I1806-01	0.250 ppb
2013-09-17	B3I1806-16	0.280 ppb
2013-09-17	B3I1806-19	0.270 ppb
2013-09-17	B3I1806-10	0.300 ppb
2013-09-17	B3I1806-07	0.260 ppb
2013-09-18	B3I1853-16	0.270 ppb
2013-09-18	B3I1853-19	0.260 ppb
2013-09-18	B3I1853-07	0.230 ppb
2013-09-18	B3I1853-22	0.210 ppb
2013-09-18	B3I1853-13	0.220 ppb
2013-09-18	B3I1853-10	0.210 ppb
2013-09-18	B3I1853-01	0.180 ppb
2013-09-18	B3I1853-04	0.250 ppb
2013-09-18	B3I1853-25	0.240 ppb
2013-09-19	B3I1957-07	0.370 ppb
2013-09-19	B3I1957-10	0.260 ppb
2013-09-19	B3I1957-13	0.300 ppb
2013-09-19	B3I1957-01	0.410 ppb
2013-09-19	B3I1957-04	0.300 ppb
2013-09-26	B3I2610-11	0.190 ppb
2013-09-26	B3I2610-04	0.210 ppb
2013-09-26	B3I2610-01	0.240 ppb
2014-03-10	B4C1040-04	0.230 ppb
2014-03-10	B4C1040-10	0.230 ppb
2014-03-10	B4C1040-07	0.210 ppb
2014-03-10	B4C1040-01	0.280 ppb
2014-03-11	B4C1205-07	0.220 ppb
2014-03-12	B4C1357-04	0.260 ppb
2014-03-12	B4C1357-07	0.370 ppb
2014-03-12	B4C1362-01	0.270 ppb
2014-03-12	B4C1357-01	0.260 ppb
2014-03-17	B4C1726-08	0.240 ppb
2014-03-17	B4C1726-01	0.220 ppb
2014-03-17	B4C1726-11	0.290 ppb
2014-03-18	B4C1885-07	0.340 ppb
2014-03-18	B4C1885-10	0.180 ppb
2014-03-18	B4C1885-04	0.220 ppb
2014-03-20	B4C2126-09	0.280 ppb
2014-03-20	B4C2126-12	0.210 ppb
2014-03-20	B4C2126-05	0.180 ppb
2014-05-13	B4E1297-07	0.280 ppb
2014-05-13	B4E1297-01	0.230 ppb
2014-05-13	B4E1297-11	0.350 ppb
2014-05-13	B4E1297-09	0.260 ppb
2014-05-13	B4E1297-03	0.270 ppb
2014-05-13	B4E1297-05	0.210 ppb
2014-05-14	B4E1516-04	0.270 ppb
2014-05-14	B4E1516-08	0.290 ppb
2014-05-14	B4E1516-06	0.270 ppb
2014-05-14	B4E1516-12	0.280 ppb
2014-05-14	B4E1516-02	0.200 ppb
2014-05-14	B4E1516-10	0.240 ppb
2014-05-15	B4E1588-01	0.260 ppb
2014-05-15	B4E1588-07	0.180 ppb
2014-05-15	B4E1588-05	0.370 ppb
2014-05-15	B4E1588-03	0.340 ppb
2014-05-15	B4E1588-09	0.120 ppb