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EWG's Tap Water Database — 2021 UPDATE

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Thallium

Ridgewood Water

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.

 

346

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND520ND
2015ND540ND
2016ND570ND
2017ND640ND
2018ND620ND
2019ND570ND

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
2014-03-054030099-08ND
2014-03-054030099-05ND
2014-03-054030099-06ND
2014-03-054030099-03ND
2014-03-054030099-09ND
2014-03-054030099-07ND
2014-03-054030099-01ND
2014-03-054030099-02ND
2014-03-054030099-11ND
2014-03-054030099-04ND
2014-03-054030099-10ND
2014-05-284050791-09ND
2014-05-284050791-01ND
2014-05-284050791-04ND
2014-05-284050791-02ND
2014-05-284050791-03ND
2014-05-284050791-06ND
2014-05-284050791-05ND
2014-05-284050791-07ND
2014-05-284050791-08ND
2014-07-094070294-06ND
2014-07-094070294-14ND
2014-07-094070294-07ND
2014-07-094070294-04ND
2014-07-094070294-01ND
2014-07-094070294-08ND
2014-07-094070294-02ND
2014-07-094070294-05ND
2014-07-094070294-03ND
2014-07-094070294-09ND
2014-07-094070294-12ND
2014-07-094070294-11ND
2014-07-094070294-10ND
2014-07-094070294-13ND
2014-07-234070750-04ND
2014-07-234070750-02ND
2014-07-234070750-05ND
2014-07-234070750-01ND
2014-07-234070750-06ND
2014-07-234070750-03ND
2014-10-294100857-04ND
2014-10-294100857-03ND
2014-10-294100857-05ND
2014-10-294100857-12ND
2014-10-294100857-01ND
2014-10-294100857-08ND
2014-10-294100857-09ND
2014-10-294100857-02ND
2014-10-294100857-07ND
2014-10-294100857-06ND
2014-10-294100857-10ND
2014-10-294100857-11ND
2015-03-095030145-09ND
2015-03-095030145-02ND
2015-03-095030145-01ND
2015-03-095030145-04ND
2015-03-095030145-06ND
2015-03-095030145-11ND
2015-03-095030145-05ND
2015-03-095030145-08ND
2015-03-095030145-07ND
2015-03-095030145-03ND
2015-03-095030145-10ND
2015-03-105030178-01ND
2015-03-305030652-01ND
2015-03-315040020-01ND
2015-05-125050322-09ND
2015-05-125050322-03ND
2015-05-125050322-06ND
2015-05-125050322-01ND
2015-05-125050322-08ND
2015-05-125050322-07ND
2015-05-125050322-02ND
2015-05-125050322-10ND
2015-05-135050377-01ND
2015-06-095060246-08ND
2015-07-155070473-07ND
2015-07-155070473-03ND
2015-07-155070473-05ND
2015-07-155070473-01ND
2015-07-155070473-08ND
2015-07-155070473-02ND
2015-07-155070473-06ND
2015-07-155070473-04ND
2015-07-155070473-10ND
2015-07-155070473-09ND
2015-07-155070473-13ND
2015-07-155070473-12ND
2015-07-155070473-11ND
2015-07-155070473-14ND
2015-07-165070495-01ND
2015-10-145100424-04ND
2015-10-145100424-03ND
2015-10-145100424-10ND
2015-10-145100424-05ND
2015-10-145100424-01ND
2015-10-145100424-09ND
2015-10-145100424-02ND
2015-10-145100424-07ND
2015-10-145100424-06ND
2015-10-145100424-08ND
2015-10-215100667-03ND
2015-10-215100667-02ND
2015-10-215100667-04ND
2015-10-215100667-01ND
2015-12-295120773-02ND
2016-01-076010110-06ND
2016-01-076010110-01ND
2016-01-076010110-07ND
2016-01-076010110-04ND
2016-01-076010110-02ND
2016-01-076010110-05ND
2016-01-076010110-03ND
2016-01-076010110-09ND
2016-01-076010110-10ND
2016-01-076010110-11ND
2016-01-076010110-08ND
2016-01-076010110-12ND
2016-01-086010173-01ND
2016-01-086010173-02ND
2016-04-066040180-04ND
2016-04-066040180-06ND
2016-04-066040180-05ND
2016-04-066040180-02ND
2016-04-066040180-03ND
2016-04-066040180-01ND
2016-04-066040180-08ND
2016-04-066040180-07ND
2016-04-066040180-09ND
2016-04-196040629-02ND
2016-04-196040629-01ND
2016-05-036050075-01ND
2016-05-116050372-04ND
2016-07-066070112-06ND
2016-07-066070112-09ND
2016-07-066070112-07ND
2016-07-066070112-04ND
2016-07-066070112-01ND
2016-07-066070112-08ND
2016-07-066070112-02ND
2016-07-066070112-05ND
2016-07-066070112-03ND
2016-07-066070112-11ND
2016-07-066070112-10ND
2016-07-066070112-14ND
2016-07-066070112-13ND
2016-07-066070112-12ND
2016-07-066070112-15ND
2016-10-116100288-07ND
2016-10-116100288-06ND
2016-10-116100288-11ND
2016-10-116100288-08ND
2016-10-116100288-04ND
2016-10-116100288-03ND
2016-10-116100288-09ND
2016-10-116100288-01ND
2016-10-116100288-05ND
2016-10-116100288-02ND
2016-10-116100288-10ND
2016-10-116100288-13ND
2016-10-116100288-12ND
2016-10-116100288-14ND
2016-10-116100288-15ND
2017-01-187010444-04ND
2017-01-187010444-07ND
2017-01-187010444-05ND
2017-01-187010444-03ND
2017-01-187010444-02ND
2017-01-187010444-06ND
2017-01-187010444-01ND
2017-01-187010444-10ND
2017-01-187010444-11ND
2017-01-187010444-12ND
2017-01-187010444-14ND
2017-01-187010444-13ND
2017-01-187010444-08ND
2017-01-187010444-09ND
2017-01-187010444-15ND
2017-01-187010444-16ND
2017-01-247010573-01ND
2017-04-187040506-04ND
2017-04-187040506-06ND
2017-04-187040506-05ND
2017-04-207040580-05ND
2017-04-207040580-01ND
2017-04-207040580-10ND
2017-04-207040580-03ND
2017-04-207040580-02ND
2017-04-207040580-04ND
2017-04-207040580-07ND
2017-04-207040580-08ND
2017-04-207040580-06ND
2017-04-207040580-09ND
2017-05-107050367-02ND
2017-05-107050367-01ND
2017-05-177050640-03ND
2017-07-057070048-06ND
2017-07-057070048-10ND
2017-07-057070048-07ND
2017-07-057070048-04ND
2017-07-057070048-03ND
2017-07-057070025-01ND
2017-07-057070048-08ND
2017-07-057070048-01ND
2017-07-057070048-05ND
2017-07-057070048-02ND
2017-07-057070048-09ND
2017-07-057070048-12ND
2017-07-057070048-11ND
2017-07-057070048-15ND
2017-07-057070048-14ND
2017-07-057070048-13ND
2017-10-037100035-07ND
2017-10-037100035-06ND
2017-10-037100035-08ND
2017-10-037100035-12ND
2017-10-037100035-09ND
2017-10-037100035-04ND
2017-10-037100035-03ND
2017-10-037100035-10ND
2017-10-037100035-01ND
2017-10-037100035-05ND
2017-10-037100035-02ND
2017-10-037100035-11ND
2017-10-037100035-14ND
2017-10-037100035-13ND
2017-10-037100035-15ND
2018-01-038010030-05ND
2018-01-038010030-04ND
2018-01-038010030-03ND
2018-01-038010030-02ND
2018-01-038010030-01ND
2018-01-038010030-06ND
2018-01-038010030-07ND
2018-01-038010030-08ND
2018-01-098010168-03ND
2018-01-098010168-04ND
2018-01-098010168-01ND
2018-01-098010168-02ND
2018-01-098010168-05ND
2018-01-098010168-06ND
2018-02-058020087-03ND
2018-04-038040027-06ND
2018-04-038040027-01ND
2018-04-038040027-07ND
2018-04-038040027-04ND
2018-04-038040027-03ND
2018-04-038040027-08ND
2018-04-038040027-05ND
2018-04-038040027-02ND
2018-04-038040027-09ND
2018-04-038040027-11ND
2018-04-038040027-10ND
2018-04-048040074-03ND
2018-04-048040074-05ND
2018-04-268040945-02ND
2018-04-268040945-01ND
2018-07-028070013-07ND
2018-07-028070013-11ND
2018-07-028070013-08ND
2018-07-028070013-05ND
2018-07-028070013-04ND
2018-07-028070013-01ND
2018-07-028070013-09ND
2018-07-028070013-02ND
2018-07-028070013-06ND
2018-07-028070013-03ND
2018-07-028070013-10ND
2018-07-028070013-13ND
2018-07-028070013-14ND
2018-07-028070013-12ND
2018-07-028070013-16ND
2018-07-028070013-15ND
2018-10-028100082-08ND
2018-10-028100082-07ND
2018-10-028100082-09ND
2018-10-028100082-01ND
2018-10-028100082-05ND
2018-10-028100082-04ND
2018-10-028100082-02ND
2018-10-028100082-06ND
2018-10-028100082-03ND
2018-10-038100136-01ND
2018-10-038100136-02ND
2018-10-038100136-03ND
2018-10-038100136-05ND
2018-10-038100136-06ND
2018-10-038100136-04ND
2018-10-038100136-07ND
2019-01-109010342-02ND
2019-01-109010342-06ND
2019-01-109010342-03ND
2019-01-109010342-01ND
2019-01-109010342-09ND
2019-01-109010342-04ND
2019-01-109010342-08ND
2019-01-109010342-05ND
2019-01-109010342-15ND
2019-01-109010342-14ND
2019-01-109010342-13ND
2019-01-109010342-11ND
2019-01-109010342-12ND
2019-01-109010342-07ND
2019-01-109010342-16ND
2019-01-109010342-10ND
2019-04-109040481-02ND
2019-04-109040481-06ND
2019-04-109040481-12ND
2019-04-109040481-07ND
2019-04-109040481-11ND
2019-04-109040481-10ND
2019-04-109040481-09ND
2019-04-109040481-01ND
2019-04-109040481-03ND
2019-04-109040481-08ND
2019-04-109040481-05ND
2019-04-109040481-04ND
2019-07-249071191-08ND
2019-07-249071191-14ND
2019-07-249071191-02ND
2019-07-249071191-01ND
2019-07-249071191-05ND
2019-07-249071191-09ND
2019-07-249071191-11ND
2019-07-249071191-07ND
2019-07-249071191-06ND
2019-07-249071191-10ND
2019-07-249071191-03ND
2019-07-249071191-13ND
2019-07-249071191-12ND
2019-07-249071191-04ND
2019-09-199090882-01ND
2019-10-099100466-06ND
2019-10-099100466-07ND
2019-10-099100466-13ND
2019-10-099100466-03ND
2019-10-099100466-01ND
2019-10-099100466-11ND
2019-10-099100466-09ND
2019-10-099100466-05ND
2019-10-099100466-08ND
2019-10-099100466-04ND
2019-10-099100466-12ND
2019-10-099100466-10ND
2019-10-099100466-02ND
2019-12-049120094-01ND