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EWG's Tap Water Database — 2021 UPDATE

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Manganese

City of Lewisville

Manganese is a naturally occurring element that is common in food and drinking water. Excessive manganese exposures may impair children's attention, memory and intellectual capacity. Click here to read more about manganese.

MORE ABOUT THIS CONTAMINANT

 

88

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.91 ppb221.17 ppb - 2.64 ppb
20152.70 ppb221.50 ppb - 3.90 ppb
20162.41 ppb220.520 ppb - 4.30 ppb
20170.500 ppb21ND - 1.000 ppb
201839.1 ppb6029ND - 2,300.0 ppb
20190.800 ppb209ND - 4.30 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 100 ppb

The EWG Health Guideline of 100 ppb for manganese was defined by the state of Minnesota as a health risk limit, the concentration of a contaminant that can be consumed with little or no risk to health. This health guideline protects against harm to the brain and nervous system.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-25Q14061150072.64 ppb
2014-02-25Q14061150061.17 ppb
2015-03-04Q15082860013.90 ppb
2015-05-14Q15180430101.50 ppb
2016-01-26Q16033780144.30 ppb
2016-01-26Q16033780130.520 ppb
2017-01-10Q1701018008ND
2017-04-11Q17149780051.000 ppb
2018-02-1475822630131.60 ppb
2018-02-1475822630031.80 ppb
2018-02-1475822630011.80 ppb
2018-02-147582263005ND
2018-02-1475822630062,300.0 ppb
2018-02-1475822630045.10 ppb
2018-02-1475822630022.20 ppb
2018-02-1475822630143.50 ppb
2018-02-1475822630126.80 ppb
2018-02-147582263011ND
2018-02-147582263010ND
2018-02-1475822630091.80 ppb
2018-02-1475822630081.80 ppb
2018-02-1475822630072.60 ppb
2018-04-091676335ND
2018-04-0916763360.748 ppb
2018-04-1016763370.584 ppb
2018-04-1016763281.56 ppb
2018-04-101676333ND
2018-04-101676332ND
2018-04-101676331ND
2018-04-1016763300.561 ppb
2018-04-101676329ND
2018-04-1016763343.32 ppb
2018-04-101676327ND
2018-04-101676340ND
2018-04-101676339ND
2018-04-101676338ND
2018-04-12Q1815190002ND
2018-04-12Q1815190010ND
2018-07-091699899ND
2018-07-091699900ND
2018-07-1016998960.604 ppb
2018-07-1016998981.76 ppb
2018-07-1016998840.518 ppb
2018-07-1016998870.724 ppb
2018-07-101699888ND
2018-07-1016998890.942 ppb
2018-07-1016998900.748 ppb
2018-07-1016998910.802 ppb
2018-07-1016998930.515 ppb
2018-07-101699894ND
2018-07-101699895ND
2018-07-1016998970.638 ppb
2018-10-17Q18414360010.500 ppb
2018-10-17Q18414360020.500 ppb
2018-11-137598342002ND
2018-11-137598343002ND
2018-11-1375983420041.40 ppb
2018-11-137598342005ND
2018-11-137598342006ND
2018-11-137598343004ND
2018-11-137598342007ND
2018-11-1375983430011.10 ppb
2018-11-137598342003ND
2018-11-137598343003ND
2018-11-137598342008ND
2018-11-137598342009ND
2018-11-137598342010ND
2018-11-137598342001ND
2019-01-1575101873006ND
2019-01-1575101873002ND
2019-01-1575101873003ND
2019-01-15751018730043.90 ppb
2019-01-1575101873005ND
2019-01-15751018720014.30 ppb
2019-01-16751018730071.20 ppb
2019-01-1675101873001ND
2019-01-16751018720041.60 ppb
2019-01-1675101873008ND
2019-01-1675101873009ND
2019-01-16751018720031.50 ppb
2019-01-1675101872002ND
2019-01-1675101873010ND
2019-01-22Q19032440242.10 ppb
2019-01-22Q1903244013ND
2019-04-23Q19160560010.600 ppb
2019-04-23Q1916056002ND
2019-07-11Q19443320010.400 ppb
2019-07-11Q19443320020.400 ppb