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EWG's Tap Water Database — 2019 UPDATE

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Germanium

Status: No national drinking water standard exists

 

Germanium is a naturally occuring element used as a component in semiconductors and fiber optics. Excessive exposures to germanium may harm the kidneys.

2015-2017:

FOUND

2

states detected

3

utilities detected

9,214

people served

Health concerns for germanium

Harm to the kidney

Harm to the liver

Anemia

Muscle weakness

Harm to the peripheral nervous system

States reporting germanium in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
Washington15,894
California23,320
MORE
LESS

Filtering technologies that reduce germanium

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Reverse Osmosis

Utilities with the highest amounts of germanium, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Prosser, City OfProsser, WA2 of 21.92 ppb5,894
Outlook WaSalinas, CA3 of 51.40 ppb45
Ventura County Waterworks District No. 19 - SomisMoorpark, CA1 of 130.0769 ppb3,275
UtilityLocationTestsAverage levelPeople served