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EWG's Tap Water Database — 2019 UPDATE

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Manganese

City of Murphy

NOTE: City of Murphy purchases water from North Texas Municipal Water District Wylie Water Treatment Plant which is required to test for manganese. Sample information shown below was taken by North Texas Municipal Water District Wylie Water Treatment Plant.

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.888 ppb220.525 ppb - 1.25 ppb
20130.768 ppb330.595 ppb - 1.06 ppb
20141.13 ppb330.856 ppb - 1.40 ppb
20154.37 ppb32ND - 11.0 ppb
20166.83 ppb330.500 ppb - 17.0 ppb
20174.95 ppb224.50 ppb - 5.40 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

NOTE: City of Murphy purchases water from North Texas Municipal Water District Wylie Water Treatment Plant which is required to test for manganese. Sample information shown below was taken by North Texas Municipal Water District Wylie Water Treatment Plant.

Date Lab ID Result
2012-06-0612061840041.25 ppb
2012-06-0612061840030.525 ppb
2013-02-2713029060051.06 ppb
2013-02-2713029060040.595 ppb
2013-04-291304A060080.650 ppb
2014-01-28Q14027510021.12 ppb
2014-01-28Q14027510010.856 ppb
2014-01-28Q14027510141.40 ppb
2015-05-21Q151881700211.0 ppb
2015-05-21Q15188170012.10 ppb
2015-11-19Q1546094002ND
2016-05-02Q161728602317.0 ppb
2016-05-02Q16172860163.00 ppb
2016-05-02Q16172860150.500 ppb
2017-06-22Q17262450034.50 ppb
2017-06-22Q17262450025.40 ppb