Vanadium
San Francisco City Water System
Vanadium is a metal used in steels and other alloys. People are commonly exposed to vanadium in water and food. Excessive exposure can be toxic during pregnancy and childhood.
20
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 | 0.148 ppb | 16 | 8 | ND - 0.480 ppb |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 21 ppb
The EWG Health Guideline of 21 ppb for vanadium was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against change in blood chemistry.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2013-01-31 | 201302010154AM | ND |
| 2013-01-31 | 201302010153AM | 0.200 ppb |
| 2013-02-21 | 201302220322AM | 0.480 ppb |
| 2013-02-21 | 201302220323AM | 0.340 ppb |
| 2013-04-29 | 201304300206AM | 0.360 ppb |
| 2013-04-29 | 201304300195AM | 0.280 ppb |
| 2013-06-06 | 201306070202AM | 0.200 ppb |
| 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 | 0.240 ppb |
| 2013-10-07 | 201310080350AM | 0.270 ppb |
| 2013-10-10 | 201310110406AM | ND |
| 2013-10-10 | 201310110456AM | ND |
| 2016-06-14 | 9553-001-0920 | ND |
| 2017-06-19 | 9553-001-1015 | ND |
| 2018-06-18 | 9553-001-1025 | ND |
| 2019-06-17 | 9553-001-0905 | ND |