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EWG's Tap Water Database — 2021 UPDATE

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Manganese

City of Richardson

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

 

228

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
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
20186.27 ppb11388ND - 11.0 ppb
20195.44 ppb11559ND - 37.1 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
2018-03-0775837970186.70 ppb
2018-03-0775837970195.70 ppb
2018-03-077583797016ND
2018-03-0775837970158.70 ppb
2018-03-0775837970146.30 ppb
2018-03-0775837970136.30 ppb
2018-03-0775837970129.40 ppb
2018-03-0775837970115.40 ppb
2018-03-0775837970108.70 ppb
2018-03-0775837970095.30 ppb
2018-03-0775837970087.90 ppb
2018-03-0775837970075.00 ppb
2018-03-0775837970065.90 ppb
2018-03-0775837970055.60 ppb
2018-03-0775837970047.20 ppb
2018-03-0775837970036.00 ppb
2018-03-0775837970027.00 ppb
2018-03-0775837970016.90 ppb
2018-03-0775837970287.80 ppb
2018-03-0775837970277.80 ppb
2018-03-0775837970269.70 ppb
2018-03-0775837970256.10 ppb
2018-03-0775837970246.90 ppb
2018-03-0775837970236.30 ppb
2018-03-0775837970227.70 ppb
2018-03-0775837970216.40 ppb
2018-03-0775837970207.20 ppb
2018-03-0775837970176.80 ppb
2018-05-2375881850286.40 ppb
2018-05-23758818500111.0 ppb
2018-05-2375881850267.10 ppb
2018-05-2375881850259.40 ppb
2018-05-2375881850249.80 ppb
2018-05-2375881850236.40 ppb
2018-05-2375881850229.20 ppb
2018-05-2375881850219.70 ppb
2018-05-2375881850208.10 ppb
2018-05-2375881850199.00 ppb
2018-05-23758818501810.00 ppb
2018-05-2375881850178.70 ppb
2018-05-2375881850166.90 ppb
2018-05-2375881850157.70 ppb
2018-05-2375881850149.60 ppb
2018-05-2375881850139.70 ppb
2018-05-2375881850127.00 ppb
2018-05-2375881850119.00 ppb
2018-05-2375881850106.60 ppb
2018-05-2375881850096.80 ppb
2018-05-2375881850088.60 ppb
2018-05-23758818500710.00 ppb
2018-05-2375881850069.80 ppb
2018-05-2375881850057.70 ppb
2018-05-2375881850046.50 ppb
2018-05-2375881850036.90 ppb
2018-05-23758818500211.0 ppb
2018-05-2375881850277.90 ppb
2018-09-2775954870287.30 ppb
2018-09-2775954870019.40 ppb
2018-09-2775954870267.80 ppb
2018-09-2775954870259.50 ppb
2018-09-2775954870248.80 ppb
2018-09-2775954870238.60 ppb
2018-09-2775954870228.70 ppb
2018-09-2775954870219.30 ppb
2018-09-2775954870209.50 ppb
2018-09-27759548701910.5 ppb
2018-09-2775954870188.50 ppb
2018-09-2775954870179.30 ppb
2018-09-2775954870168.80 ppb
2018-09-2775954870158.10 ppb
2018-09-2775954870149.20 ppb
2018-09-2775954870139.40 ppb
2018-09-2775954870129.00 ppb
2018-09-2775954870119.30 ppb
2018-09-2775954870107.70 ppb
2018-09-27759548700910.1 ppb
2018-09-2775954870088.60 ppb
2018-09-27759548700710.2 ppb
2018-09-27759548700610.6 ppb
2018-09-2775954870059.60 ppb
2018-09-2775954870048.80 ppb
2018-09-2775954870038.90 ppb
2018-09-2775954870029.20 ppb
2018-09-2775954870278.20 ppb
2018-10-16Q18412770019.40 ppb
2018-11-287599160028ND
2018-11-287599160027ND
2018-11-287599160026ND
2018-11-287599160025ND
2018-11-287599160024ND
2018-11-287599160023ND
2018-11-287599160022ND
2018-11-287599160021ND
2018-11-287599160020ND
2018-11-287599160019ND
2018-11-287599160018ND
2018-11-287599160017ND
2018-11-2875991600165.30 ppb
2018-11-287599160015ND
2018-11-287599160014ND
2018-11-287599160013ND
2018-11-287599160012ND
2018-11-287599160011ND
2018-11-287599160010ND
2018-11-287599160009ND
2018-11-287599160008ND
2018-11-2875991600076.10 ppb
2018-11-287599160006ND
2018-11-287599160005ND
2018-11-287599160004ND
2018-11-287599160003ND
2018-11-2875991600025.90 ppb
2018-11-2875991600015.30 ppb
2019-01-16Q19023850015.10 ppb
2019-03-07751044670249.20 ppb
2019-03-07751044670237.90 ppb
2019-03-07751044670228.10 ppb
2019-03-07751044670218.10 ppb
2019-03-077510446702010.2 ppb
2019-03-07751044670198.90 ppb
2019-03-07751044670188.10 ppb
2019-03-07751044670176.20 ppb
2019-03-07751044670168.90 ppb
2019-03-07751044670158.90 ppb
2019-03-07751044670148.80 ppb
2019-03-07751044670137.70 ppb
2019-03-077510446701210.00 ppb
2019-03-07751044670118.50 ppb
2019-03-07751044670107.70 ppb
2019-03-07751044670099.10 ppb
2019-03-077510446700810.1 ppb
2019-03-07751044670078.00 ppb
2019-03-077510446700610.3 ppb
2019-03-07751044670058.00 ppb
2019-03-07751044670049.80 ppb
2019-03-07751044670038.60 ppb
2019-03-07751044670026.00 ppb
2019-03-07751044670018.40 ppb
2019-03-077510446702811.3 ppb
2019-03-077510446702710.6 ppb
2019-03-07751044670265.80 ppb
2019-03-07751044670256.20 ppb
2019-04-03Q19135390015.20 ppb
2019-04-307510765102810.8 ppb
2019-04-307510765100112.4 ppb
2019-04-307510765102611.9 ppb
2019-04-307510765102510.6 ppb
2019-04-307510765102413.3 ppb
2019-04-307510765102311.7 ppb
2019-04-307510765102214.3 ppb
2019-04-30751076510219.80 ppb
2019-04-307510765102010.6 ppb
2019-04-307510765101911.6 ppb
2019-04-307510765101813.9 ppb
2019-04-307510765101711.4 ppb
2019-04-307510765101610.2 ppb
2019-04-30751076510159.60 ppb
2019-04-30751076510149.50 ppb
2019-04-307510765101311.3 ppb
2019-04-307510765101220.5 ppb
2019-04-307510765101110.6 ppb
2019-04-307510765101014.5 ppb
2019-04-307510765100910.6 ppb
2019-04-307510765100811.3 ppb
2019-04-307510765100712.6 ppb
2019-04-307510765100611.4 ppb
2019-04-307510765100510.7 ppb
2019-04-307510765100437.1 ppb
2019-04-307510765100325.4 ppb
2019-04-307510765100211.1 ppb
2019-04-307510765102710.9 ppb
2019-07-25Q19480090016.70 ppb
2019-07-301931098-28ND
2019-07-301931098-01ND
2019-07-301931098-26ND
2019-07-301931098-25ND
2019-07-301931098-24ND
2019-07-301931098-23ND
2019-07-301931098-22ND
2019-07-301931098-21ND
2019-07-301931098-20ND
2019-07-301931098-19ND
2019-07-301931098-18ND
2019-07-301931098-17ND
2019-07-301931098-16ND
2019-07-301931098-15ND
2019-07-301931098-14ND
2019-07-301931098-13ND
2019-07-301931098-12ND
2019-07-301931098-11ND
2019-07-301931098-10ND
2019-07-301931098-09ND
2019-07-301931098-08ND
2019-07-301931098-07ND
2019-07-301931098-06ND
2019-07-301931098-05ND
2019-07-301931098-04ND
2019-07-301931098-03ND
2019-07-301931098-02ND
2019-07-301931098-27ND
2019-12-121950240-28ND
2019-12-121950240-01ND
2019-12-121950240-26ND
2019-12-121950240-25ND
2019-12-121950240-24ND
2019-12-121950240-23ND
2019-12-121950240-22ND
2019-12-121950240-21ND
2019-12-121950240-20ND
2019-12-121950240-19ND
2019-12-121950240-18ND
2019-12-121950240-17ND
2019-12-121950240-16ND
2019-12-121950240-15ND
2019-12-121950240-14ND
2019-12-121950240-13ND
2019-12-121950240-12ND
2019-12-121950240-11ND
2019-12-121950240-10ND
2019-12-121950240-09ND
2019-12-121950240-08ND
2019-12-121950240-07ND
2019-12-121950240-06ND
2019-12-121950240-05ND
2019-12-121950240-04ND
2019-12-121950240-03ND
2019-12-121950240-02ND
2019-12-121950240-27ND