Molybdenum
San Francisco City Water System
Molybdenum is a metal that occurs naturally in soil, minerals and water. People who ingest large amounts can have increased levels of uric acid and gout-like symptoms.
17
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | ND | 16 | 0 | ND |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 1 | 0 | ND |
| 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 40 ppb
The EWG Health Guideline of 40 ppb for molybdenum was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against metabolic changes and excess formation of uric acid in the blood.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2013-01-31 | 201302010153AM | ND |
| 2013-01-31 | 201302010154AM | ND |
| 2013-02-21 | 201302220323AM | ND |
| 2013-02-21 | 201302220322AM | ND |
| 2013-04-29 | 201304300206AM | ND |
| 2013-04-29 | 201304300195AM | ND |
| 2013-06-06 | 201306070202AM | ND |
| 2013-06-06 | 201306070190AM | ND |
| 2013-07-30 | 201307310249AM | ND |
| 2013-07-30 | 201307310290AM | ND |
| 2013-08-12 | 201308130156AM | ND |
| 2013-08-12 | 201308130152AM | ND |
| 2013-10-07 | 201310080353AM | ND |
| 2013-10-07 | 201310080350AM | ND |
| 2013-10-10 | 201310110456AM | ND |
| 2013-10-10 | 201310110406AM | ND |
| 2016-06-14 | 9553-001-0920 | ND |