Thallium
City of Mesa
Thalium is a naturally occurring metal released into the environment from metal smelting and coal burning. Exposure to too much thalium can cause hair loss, liver damage, reduced sperm motility and nervous system impairment.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 1 | 0 | ND |
2015 | ND | 30 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 30 | 0 | ND |
2019 | ND | 15 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for thallium was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 2 ppb
The legal limit for thallium, established in 1992, was based on analytical detection limits at the time that the standard was set.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-10-08 | 14100297 | ND |
2015-04-07 | 15040273 | ND |
2015-04-07 | 15040272 | ND |
2015-04-07 | 15040249 | ND |
2015-04-14 | 15040400 | ND |
2015-04-21 | 15040606 | ND |
2015-04-28 | 15040768 | ND |
2015-04-29 | 15040771 | ND |
2015-04-29 | 15040772 | ND |
2015-07-06 | 15070077 | ND |
2015-07-06 | 15070076 | ND |
2015-07-06 | 15070074 | ND |
2015-07-06 | 15070073 | ND |
2015-07-07 | 15070120IOC | ND |
2015-07-07 | 15070119I | ND |
2015-07-07 | 15070117 | ND |
2015-07-13 | 15070247I | ND |
2015-07-13 | 15070249 | ND |
2015-07-13 | 15070251 | ND |
2015-07-13 | 15070250 | ND |
2015-07-14 | 15070255 | ND |
2015-07-14 | 15070254 | ND |
2015-07-14 | 15070253 | ND |
2015-07-14 | 15070252I | ND |
2015-07-20 | 15070391 | ND |
2015-07-21 | 15070448 | ND |
2015-07-21 | 15070447 | ND |
2015-07-21 | 15070449 | ND |
2015-07-21 | 15070450 | ND |
2015-07-21 | 15070451 | ND |
2015-07-27 | 15070541 | ND |
2016-06-08 | 16060165I | ND |
2016-10-04 | 16100039 | ND |
2017-10-10 | 17100401 | ND |
2018-04-02 | 18030942 | ND |
2018-04-04 | 18030948 IOC | ND |
2018-04-09 | 18040100 IOC | ND |
2018-04-09 | 18040098 | ND |
2018-04-10 | 18040101 | ND |
2018-04-16 | 18040222 IOC | ND |
2018-04-16 | 18040220 IOC | ND |
2018-04-17 | 18040224 | ND |
2018-04-17 | 18040223 IOC | ND |
2018-04-24 | 18040504 IOC | ND |
2018-04-24 | 18040503 IOC | ND |
2018-04-24 | 18040502 IOC | ND |
2018-04-30 | 18040540 IOC | ND |
2018-05-10 | 18050425 | ND |
2018-08-07 | 18080202 IOC | ND |
2018-10-11 | 18100452 | ND |
2018-10-15 | 18100506 | ND |
2018-10-15 | 18100484 | ND |
2018-10-16 | 18100519 | ND |
2018-10-16 | 18100517 | ND |
2018-10-17 | 18100557 | ND |
2018-10-17 | 18100555 IOC | ND |
2018-10-18 | 18100597 | ND |
2018-10-22 | 18100638 | ND |
2018-10-22 | 18100640 | ND |
2018-10-23 | 18100673 | ND |
2018-10-24 | 18100683 | ND |
2018-10-24 | 18100681 | ND |
2018-10-29 | 18100752 | ND |
2018-11-26 | 18110662 IOC | ND |
2019-03-27 | 19030655 | ND |
2019-03-28 | 19030580 | ND |
2019-04-08 | 19040180 | ND |
2019-04-08 | 19040182 | ND |
2019-04-10 | 19040260 | ND |
2019-04-11 | 19040287 | ND |
2019-04-15 | 19040331 | ND |
2019-04-16 | 19040354 | ND |
2019-04-16 | 19040352 | ND |
2019-04-24 | 19040522 | ND |
2019-08-05 | 19080019 | ND |
2019-08-08 | 19080129 | ND |
2019-08-15 | 19080280 | ND |
2019-08-26 | 19080657 | ND |
2019-09-19 | 19090600 | ND |