Strontium in drinking water
A natural mineral, common in groundwater.
Health: High levels can affect bone development.
1.5 ppm
EPA reference concentration
Across the US
4,734
systems with results
4,734
detected at least once
273
results above the health guideline
Those 273 systems serve about 18.2 million people.
From EPA's earlier unregulated contaminant testing (UCMR 3). These results are older, so ask your utility for current data.
Highest results
| Water system | People | Highest result |
|---|---|---|
| Goforth Special Utility District | 34,893 | 62 ppm |
| Germantown Water Utility | 20,027 | 52.6 ppm |
| Brookfield Water Utility | 29,070 | 40.5 ppm |
| City of Kyle | 52,000 | 39.8 ppm |
| Waukesha Water Utility | 70,718 | 39 ppm |
| Little Chute Waterworks | 12,168 | 27 ppm |
| Kaukauna Utilities | 17,493 | 26.9 ppm |
| Menomonee Falls Water Works – Groundwater | 1,796 | 22 ppm |
| Sjwtx Triple Peak Plant | 32,973 | 21.8 ppm |
| Wrightstown Waterworks | 3,815 | 21 ppm |
| Oatman Water Company | 230 | 13 ppm |
| Fond du Lac Waterworks | 44,678 | 11.7 ppm |
| Aqua Ohio – Tiffin | 20,279 | 11 ppm |
| Darboy Sanitary District 1 | 13,024 | 11 ppm |
| City of Boerne | 24,769 | 10.8 ppm |
| Jackson Public Water System | 15,000 | 10.3 ppm |
| Allouez Waterworks | 13,923 | 9.83 ppm |
| San Antonio Water System | 2.6 million | 9.8 ppm |
| Sarasota County Special Utilities District | 272,267 | 9.69 ppm |
| Middlesex Water Company | 233,376 | 7.76 ppm |
| Ruidoso Water System | 15,947 | 7.6 ppm |
| Antioch Water System | 14,175 | 7.55 ppm |
| Western Virginia Water Authority | 182,700 | 7.28 ppm |
| Pluris-South Gate Utilities | 15,897 | 7.28 ppm |
| City of Kerrville | 30,530 | 7.12 ppm |
States with the most detections
- California: 447
- Texas: 375
- Illinois: 253
- Florida: 252
- Ohio: 179
- Massachusetts: 169
- New Jersey: 168
- Pennsylvania: 166
- New York: 161
- Michigan: 158
- North Carolina: 146
- Tennessee: 136
Sources
The limits, health goals and health effects on this page come from these EPA sources. The results come from EPA's monitoring data for each water system.
- EPA: UCMR occurrence data (the test results)
- EPA: National Primary Drinking Water Regulations (limits and health effects table)
This page summarizes public regulatory information. It is not medical advice. How we source and check this site.
Questions
What is the safe level of Strontium in drinking water?
There is no federal legal limit. EPA reference concentration: 1.5 ppm.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.