Thallium

Town of Hempstead Water Department

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.

MORE ABOUT THIS CONTAMINANT

148

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	ND	35	0	ND
2015	0.552 ppb	21	9	ND - 3.20 ppb
2016	ND	28	0	ND
2017	ND	17	0	ND
2018	ND	24	0	ND
2019	ND	23	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
2014-02-03	97973-PRI	ND
2014-02-04	98005-PRI	ND
2014-03-20	1403E39-009-PRI	ND
2014-03-20	1403E39-004-PRI	ND
2014-03-20	1403E39-003-PRI	ND
2014-03-20	1403E39-006-PRI	ND
2014-04-29	98539-04292014-P	ND
2014-04-29	98537-04292014-P	ND
2014-04-29	98533-04292014-P	ND
2014-04-29	98534-04292014-P	ND
2014-04-29	98538-04292014-P	ND
2014-04-29	98535-04292014-P	ND
2014-04-29	98536-04292014-P	ND
2014-06-16	098911-06162014-	ND
2014-07-14	99139-07142014-P	ND
2014-07-14	99137-07142014-P	ND
2014-07-14	99138-07142014-P	ND
2014-07-14	99136-07142014-P	ND
2014-08-27	99388-08272014-P	ND
2014-08-27	99391-08272014-P	ND
2014-08-27	99390-08272014-P	ND
2014-08-27	99387-08272014-P	ND
2014-08-27	99393-08272014-P	ND
2014-10-01	99733-PRI	ND
2014-10-02	99750-PRI	ND
2014-11-17	100002-PRI	ND
2014-11-17	100001-11172014-	ND
2014-11-17	100000-PRI	ND
2014-11-17	9997-11172014-PR	ND
2014-12-01	100115-12012014-	ND
2014-12-01	100116-12012014-	ND
2014-12-01	100114-12012014-	ND
2014-12-01	100120-PRI	ND
2014-12-01	100117-12012014-	ND
2014-12-04	100121-12012014-	ND
2015-01-12	100351-01122015-	ND
2015-01-12	100352-01122015-	ND
2015-01-12	100350-01122015-	0.700 ppb
2015-01-12	100355-01122015-	ND
2015-03-02	100548-03022015-	ND
2015-03-02	100549-03022015-	ND
2015-03-02	100547-03022015-	ND
2015-03-02	100546-03022015-	ND
2015-03-30	100646	ND
2015-03-30	100645	0.00140 ppb
2015-03-30	100639	ND
2015-03-30	100647	ND
2015-04-17	100763	3.20 ppb
2015-04-28	100826	ND
2015-04-28	100844	1.20 ppb
2015-04-28	100842	2.40 ppb
2015-04-28	100830	0.900 ppb
2015-04-28	100845	0.600 ppb
2015-04-28	100841	0.700 ppb
2015-04-28	100846	ND
2015-04-28	100843	1.90 ppb
2016-02-01	1602051-002-PRI	ND
2016-02-04	1602447-002 PRI	ND
2016-03-31	1603P15-003-PRI	ND
2016-03-31	1603P15-001-PRI	ND
2016-03-31	1603P15-004-PRI	ND
2016-03-31	1603P15-002-PRI	ND
2016-04-04	1604218-004-PRI	ND
2016-04-04	1604218-001	ND
2016-04-04	1604218-005-PRI	ND
2016-04-04	1604218-006-PRI	ND
2016-04-04	1604218-003-PRI	ND
2016-04-04	1604218-002-PRI	ND
2016-04-25	1604M30-004-PRI	ND
2016-04-25	1604M30-006-PRI	ND
2016-04-25	1604M30-002-PRI	ND
2016-04-25	1604M30-005-PRI	ND
2016-04-25	1604M30-003-PRI	ND
2016-04-25	1604M30-001-PRI	ND
2016-05-19	1605I29-007-PRI	ND
2016-05-19	1605I29-006-PRI	ND
2016-06-03	1606334-002-PRI	ND
2016-06-16	1606G41-006-PRI	ND
2016-06-16	1606G41-007-PRI	ND
2016-06-16	1606G41-003	ND
2016-06-16	1606G41-003-PRI	ND
2016-06-29	1606S43-003-PRI	ND
2016-08-31	1608S39-005-PRI	ND
2016-08-31	1608S39-003-PRI	ND
2017-01-30	7010148001-PRI	ND
2017-01-30	7010148007-PRI	ND
2017-01-30	7010148004-PRI	ND
2017-01-30	7010148003-PRI	ND
2017-01-30	701014002-PRI	ND
2017-02-13	7011165006-PRI	ND
2017-02-13	7011165007-PRI	ND
2017-02-13	7011165005-PRI	ND
2017-02-13	7011165008-PRI	ND
2017-02-27	7012180006-PRI	ND
2017-02-27	7012180009-PRI	ND
2017-02-27	7012180005-PRI	ND
2017-02-27	7012180003-PRI	ND
2017-05-02	7017470003-PRI	ND
2017-05-31	7019963005-PRI	ND
2017-07-13	7024011003-PRI	ND
2017-10-25	7034010003-PRI	ND
2018-01-16	7040464002-PRI	ND
2018-01-29	7041520010-PRI	ND
2018-01-29	7041520003-PRI	ND
2018-01-29	7041520004-PRI	ND
2018-01-30	7041659002-PRI	ND
2018-04-13	7048404001-PRI	ND
2018-04-20	7049155002-PRI	ND
2018-04-20	7049155005	ND
2018-04-20	70449155004-PRI	ND
2018-04-20	7049155003-PRI	ND
2018-04-20	7049155001-PRI	ND
2018-04-20	7049155003	ND
2018-04-26	7049700003-PRI	ND
2018-04-26	7049700004-PRI	ND
2018-05-09	7051103001-PRI	ND
2018-05-29	7052946009-PRI	ND
2018-05-29	7052946006-PRI	ND
2018-06-28	7056573001-PRI	ND
2018-07-05	60521453-PRI	ND
2018-07-30	7059788008-PRI	ND
2018-07-30	7059788007-PRI	ND
2018-07-30	7059788001-PRI	ND
2018-07-30	7059788004-PRI	ND
2018-07-30	7059788006-PRI	ND
2019-01-24	7077506004-PRI	ND
2019-01-24	7077506005-PRI	ND
2019-01-24	7077506006-PRI	ND
2019-01-24	7077506003	ND
2019-01-24	7077506007-PRI	ND
2019-01-24	7077506009-PRI	ND
2019-01-24	7077506003-PRI	ND
2019-01-29	7077854001-PRI	ND
2019-01-29	7077854005-PRI	ND
2019-02-06	7078608007-PRI	ND
2019-02-06	7078608005-PRI	ND
2019-02-06	7078608003-PRI	ND
2019-05-15	7089637006	ND
2019-05-15	7089637001	ND
2019-05-15	7089637002	ND
2019-05-15	7089637003	ND
2019-05-15	7089637005	ND
2019-06-04	7091931001-PRI	ND
2019-06-27	7095546002-PRI	ND
2019-06-27	7095546003-PRI	ND
2019-06-27	7095546005-PRI	ND
2019-06-27	7095546004-PRI	ND
2019-08-16	70101758001	ND