Strontium

City of Merced

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
2014	0.377 ppb	40	40	0.200 ppb - 0.660 ppb
2015	0.253 ppb	3	3	0.210 ppb - 0.290 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
2014-05-07	A4D2217-31A	0.370 ppb
2014-05-07	A4D2215-16A	0.460 ppb
2014-05-07	A4D2215-21A	0.290 ppb
2014-05-07	A4D2217-26A	0.300 ppb
2014-05-07	A4D2215-26A	0.450 ppb
2014-05-07	A4D2215-31A	0.340 ppb
2014-05-07	A4D2217-06A	0.660 ppb
2014-05-07	A4D2216-01A	0.320 ppb
2014-05-07	A4D2217-11A	0.290 ppb
2014-05-07	A4D2216-06A	0.260 ppb
2014-05-07	A4D2216-16A	0.220 ppb
2014-05-07	A4D2215-11A	0.530 ppb
2014-05-07	A4D2217-16A	0.250 ppb
2014-05-07	A4D2216-11A	0.220 ppb
2014-05-07	A4D2217-01A	0.650 ppb
2014-05-07	A4D2216-21A	0.250 ppb
2014-05-07	A4D2217-21A	0.200 ppb
2014-05-07	A4D2216-26A	0.250 ppb
2014-05-07	A4D2215-01A	0.580 ppb
2014-05-07	A4D2215-36A	0.290 ppb
2014-05-07	A4D2215-06A	0.560 ppb
2014-12-04	A4K1983-03A	0.210 ppb
2014-12-04	A4K1982-15A	0.300 ppb
2014-12-04	A4K1983-05A	0.210 ppb
2014-12-04	A4K1983-09A	0.290 ppb
2014-12-04	A4K1984-09A	0.300 ppb
2014-12-04	A4K1982-07A	0.330 ppb
2014-12-04	A4K1984-07A	0.290 ppb
2014-12-04	A4K1983-11A	0.300 ppb
2014-12-04	A4K1982-09A	0.290 ppb
2014-12-04	A4K1983-07A	0.220 ppb
2014-12-04	A4K1983-01A	0.330 ppb
2014-12-04	A4K1982-11A	0.470 ppb
2014-12-04	A4K1984-05A	0.310 ppb
2014-12-04	A4K1982-05A	0.580 ppb
2014-12-04	A4K1982-13A	0.350 ppb
2014-12-04	A4K1982-01A	0.630 ppb
2014-12-04	A4K1982-03A	0.640 ppb
2014-12-04	A4K1984-01A	0.610 ppb
2014-12-04	A4K1984-03A	0.660 ppb
2015-05-07	A5D2609-01A	0.260 ppb
2015-12-17	A5K1755-01A	0.290 ppb
2015-12-17	A5K1755-03A	0.210 ppb