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EWG's Tap Water Database — 2021 UPDATE

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Arsenic

Town of Hempstead Water Department

Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

MORE ABOUT THIS CONTAMINANT

 

160

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND450ND
2015ND120ND
20160.210 ppb393ND - 4.30 ppb
2017ND170ND
2018ND240ND
2019ND230ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.004 ppb

The EWG Health Guideline of 0.004 ppb for arsenic 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 cancer.

EPA Maximum Contaminant
Level (MCL) 10 ppb

The legal limit for arsenic, established in 2001, was based on costs for arsenic removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to arsenic exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-0397973-PRIND
2014-02-0498005-PRIND
2014-03-201403E39-009-PRIND
2014-03-201403E39-004-PRIND
2014-03-201403E39-003-PRIND
2014-03-201403E39-006-PRIND
2014-04-2998539-04292014-PND
2014-04-2998537-04292014-PND
2014-04-2998533-04292014-PND
2014-04-2998534-04292014-PND
2014-04-2998538-04292014-PND
2014-04-2998535-04292014-PND
2014-04-2998536-04292014-PND
2014-05-0198562-05012014ND
2014-05-0198557-05012014ND
2014-06-16098911-06162014-ND
2014-07-1499139-07142014-PND
2014-07-1499137-07142014-PND
2014-07-1499138-07142014-PND
2014-07-1499136-07142014-PND
2014-07-1599141-07152014ND
2014-07-1599146-07152014ND
2014-08-2799388-08272014-PND
2014-08-2799391-08272014-PND
2014-08-2799390-08272014-PND
2014-08-2799413-08272014ND
2014-08-2799387-08272014-PND
2014-08-2799393-08272014-PND
2014-08-2799408-08272014ND
2014-10-0199733-PRIND
2014-10-0299750-PRIND
2014-11-17100021-11172014ND
2014-11-17100002-PRIND
2014-11-17100001-11172014-ND
2014-11-17100016-11172014ND
2014-11-17100000-PRIND
2014-11-179997-11172014-PRND
2014-11-19100056-11192014ND
2014-11-19100061-11192014ND
2014-12-01100115-12012014-ND
2014-12-01100116-12012014-ND
2014-12-01100114-12012014-ND
2014-12-01100120-PRIND
2014-12-01100117-12012014-ND
2014-12-04100121-12012014-ND
2015-01-12100351-01122015-ND
2015-01-12100352-01122015-ND
2015-01-12100350-01122015-ND
2015-01-12100355-01122015-ND
2015-03-02100548-03022015-ND
2015-03-02100549-03022015-ND
2015-03-02100547-03022015-ND
2015-03-02100546-03022015-ND
2015-03-30100646ND
2015-03-30100645ND
2015-03-30100639ND
2015-03-30100647ND
2016-02-011602051-002-PRIND
2016-02-041602437-005ND
2016-02-041602437-007ND
2016-02-041602437-004ND
2016-02-041602437-010ND
2016-02-041602437-008ND
2016-02-041602437-002ND
2016-02-041602447-002 PRIND
2016-02-041602437-006ND
2016-02-041602437-009ND
2016-02-041602437-003ND
2016-02-041602437-001ND
2016-02-04A602437-001ND
2016-03-311603P15-003-PRIND
2016-03-311603P15-002-PRIND
2016-03-311603P15-001-PRIND
2016-03-311603P15-004-PRIND
2016-04-041604218-001ND
2016-04-041604218-004-PRIND
2016-04-041604218-006-PRIND
2016-04-041604218-002-PRIND
2016-04-041604218-005-PRIND
2016-04-041604218-003-PRIND
2016-04-251604M30-004-PRIND
2016-04-251604M30-003-PRIND
2016-04-251604M30-002-PRIND
2016-04-251604M30-001-PRIND
2016-04-251604M30-006-PRI2.40 ppb
2016-04-251604M30-005-PRI4.30 ppb
2016-05-191605I29-006-PRIND
2016-05-191605I29-007-PRIND
2016-06-031606334-002-PRI1.50 ppb
2016-06-161606G41-006-PRIND
2016-06-161606G41-003-PRIND
2016-06-161606G41-003ND
2016-06-161606G41-007-PRIND
2016-06-291606S43-003-PRIND
2016-08-311608S39-005-PRIND
2016-08-311608S39-003-PRIND
2017-01-307010148007-PRIND
2017-01-307010148001-PRIND
2017-01-307010148004-PRIND
2017-01-307010148003-PRIND
2017-01-30701014002-PRIND
2017-02-137011165006-PRIND
2017-02-137011165007-PRIND
2017-02-137011165005-PRIND
2017-02-137011165008-PRIND
2017-02-277012180006-PRIND
2017-02-277012180003-PRIND
2017-02-277012180009-PRIND
2017-02-277012180005-PRIND
2017-05-027017470003-PRIND
2017-05-317019963005-PRIND
2017-07-137024011003-PRIND
2017-10-257034010003-PRIND
2018-01-167040464002-PRIND
2018-01-297041520004-PRIND
2018-01-297041520003-PRIND
2018-01-297041520010-PRIND
2018-01-307041659002-PRIND
2018-04-137048404001-PRIND
2018-04-207049155003-PRIND
2018-04-207049155003ND
2018-04-2070449155004-PRIND
2018-04-207049155001-PRIND
2018-04-207049155002-PRIND
2018-04-207049155005ND
2018-04-267049700004-PRIND
2018-04-267049700003-PRIND
2018-05-097051103001-PRIND
2018-05-297052946009-PRIND
2018-05-297052946006-PRIND
2018-06-287056573001-PRIND
2018-07-0560521453-PRIND
2018-07-307059788001-PRIND
2018-07-307059788004-PRIND
2018-07-307059788007-PRIND
2018-07-307059788008-PRIND
2018-07-307059788006-PRIND
2019-01-247077506003ND
2019-01-247077506006-PRIND
2019-01-247077506009-PRIND
2019-01-247077506007-PRIND
2019-01-247077506004-PRIND
2019-01-247077506005-PRIND
2019-01-247077506003-PRIND
2019-01-297077854001-PRIND
2019-01-297077854005-PRIND
2019-02-067078608007-PRIND
2019-02-067078608005-PRIND
2019-02-067078608003-PRIND
2019-05-157089637005ND
2019-05-157089637002ND
2019-05-157089637001ND
2019-05-157089637006ND
2019-05-157089637003ND
2019-06-047091931001-PRIND
2019-06-277095546004-PRIND
2019-06-277095546005-PRIND
2019-06-277095546002-PRIND
2019-06-277095546003-PRIND
2019-08-1670101758001ND