Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Lithium

Status: No national drinking water standard exists

 

Lithium occurs naturally in soil and rock. It is a pollutant from mining and industrial manufacturing of metals, ceramics and batteries. Ingesting too much lithium can lead to symptoms like abdominal pain, diarrhea, nausea and vomiting.

2015-2017:

FOUND

5

states detected

25

utilities detected

4.9 million

people served

States reporting lithium in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
California131,772,734
Virginia21,289,422
New York51,137,108
District Of Columbia3648,882
Wisconsin115,229
Colorado141
MORE
LESS

Filtering technologies that reduce lithium

reverse osmosis icon

Reverse Osmosis

ion exchange icon

Ion Exchange

Utilities with the highest amounts of lithium, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
San Juan Ranch Homeowners AssociationLake City, CO1 of 151.0 ppb41
Kern County Water Agency*Bakersfield, CA2 of 210.5 ppb0
River Falls WaterworksRiver Falls, WI5 of 52.60 ppb15,229
Washington Aqueduct Division*Washington, DC71 of 711.90 ppb0
D.C. Water and Sewer Authority*Washington, DC71 of 711.90 ppb632,323
Arlington County*Arlington, VA71 of 711.90 ppb215,000
Santa Clara Valley Water District*San Jose, CA14 of 431.83 ppb0
St James WDSt James, NY3 of 31.05 ppb10,587
Stony Brook Water DistrictOakdale, NY3 of 31.05 ppb4,836
Greenport VillageGreenport, NY3 of 31.05 ppb2,050
Smithtown WDKings Park, NY3 of 31.05 ppb19,635
Suffolk County Water Authority*Oakdale, NY3 of 31.05 ppb1,100,000

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Lithium, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
River Falls WaterworksRiver Falls, WI5 of 52.60 ppb15,229
D.C. Water and Sewer Authority*Washington, DC71 of 711.90 ppb632,323
Arlington County*Arlington, VA71 of 711.90 ppb215,000
St James WDSt James, NY3 of 31.05 ppb10,587
Smithtown WDKings Park, NY3 of 31.05 ppb19,635
Suffolk County Water Authority*Oakdale, NY3 of 31.05 ppb1,100,000

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Lithium, but it likely has the contaminant in its water supply.