Molybdenum in drinking water
A natural trace metal.
40 ppb
EPA health advisory
Across the US
4,734
systems with results
2,434
detected at least once
36
results above the health guideline
Those 36 systems serve about 921,005 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 |
|---|---|---|
| City of Punta Gorda | 36,302 | 196 ppb |
| Nipomo Comm Services District | 13,771 | 190 ppb |
| California American Water – Oakhurst | 3,710 | 180 ppb |
| City of California City | 14,198 | 150 ppb |
| Owensboro Municipal Utilities | 60,473 | 140 ppb |
| Cape Girardeau Public Water System | 39,941 | 102 ppb |
| Lake Gibson Estates Water System | 1,897 | 100 ppb |
| Connecticut Water Company – Unionville System | 14,693 | 93 ppb |
| City of Paso Robles Water Division | 31,176 | 86 ppb |
| East Daviess County Water Association Inc | 11,997 | 81 ppb |
| Winter Garden Water Dept | 72,205 | 77.9 ppb |
| City of Hartington | 1,499 | 77 ppb |
| South Tahoe Public Utility District – Main | 30,089 | 72 ppb |
| Southwest/Polk County Utility | 39,209 | 69.2 ppb |
| Daviess County Water District | 33,655 | 68 ppb |
| Indiana American Water – Sheridan | 4,435 | 67.1 ppb |
| City of Auburndale | 35,239 | 63.8 ppb |
| Clermont East Water System | 39,279 | 62 ppb |
| Fillmore Water Dept | 16,419 | 61 ppb |
| Marion City Water Works | 28,363 | 60 ppb |
| Windermere Community Water System | 21,231 | 59.4 ppb |
| US Army Fort Irwin Water System | 7,800 | 59 ppb |
| City of Clermont | 10,048 | 56 ppb |
| Ruidoso Water System | 15,947 | 53 ppb |
| Lindenhurst Water System | 14,500 | 52.9 ppb |
States with the most detections
- California: 376
- Texas: 298
- Illinois: 218
- Ohio: 165
- Florida: 130
- Indiana: 84
- Minnesota: 72
- Arizona: 66
- Michigan: 64
- Pennsylvania: 63
- Colorado: 56
- Missouri: 54
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 Molybdenum in drinking water?
There is no federal legal limit. EPA health advisory: 40 ppb.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.