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EWG's Tap Water Database — 2021 UPDATE

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Hydrogen sulfide

Status: No national drinking water standard exists

 

Hydrogen sulfide is a constituent of crude petroleum and natural gas; it is also released from decomposing waste in landfills and sewers, and from industrial facilities. Hydrogen sulfide has a rotten egg odor. It can irritate the eyes and respiratory system.

2017-2019:

FOUND

3

states detected

6

utilities detected

8,090

people served

Health concerns for hydrogen sulfide

Eye and lung irritation

States reporting hydrogen sulfide in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
Virginia25,181
Ohio22,831
New Hampshire278
MORE
LESS

Filtering technologies that reduce hydrogen sulfide

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Utilities with the highest amounts of hydrogen sulfide, 2017-2019

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Oakwood Village WaterOakwood, OH1 of 133,300.0 ppb608
United Water Matchaponix*Manalapan, NJ1 of 124,000.0 ppb0
Suez Water Manalapan MillhurstManalapan, NJ1 of 124,000.0 ppb2,100
Manalapan Township Water District Tracy StationManalapan, NJ1 of 124,000.0 ppb800
Spencerville VillageSpencerville, OH2 of 2650.0 ppb2,223
BrandywineEpping, NH1 of 130.0 ppb72
Mansfield WoodsLunenburg, NH1 of 230.0 ppb6
City of Chesapeake - Western Branch SystemChesapeake, VA1 of 130.0 ppb32,326
Norfolk Naval ShipyardPortsmouth, VA1 of 130.0 ppb17,000
City of Portsmouth*Suffolk, VA1 of 130.0 ppb120,400
Nsa Hampton Roads, Portsmouth AnnexNorfolk, VA1 of 130.0 ppb6,350
Caroline Utility SystemBowling Green, VA3 of 1522.5 ppb4,235
Placid Bay EstatesColonial Beach, VA2 of 33.67 ppb946
Ft. A P Hill - HeadquartersBowling Green, VA1 of 41.25 ppb180

* 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 Hydrogen sulfide, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
City of Chesapeake - Western Branch SystemChesapeake, VA1 of 130.0 ppb32,326
Norfolk Naval ShipyardPortsmouth, VA1 of 130.0 ppb17,000
City of Portsmouth*Suffolk, VA1 of 130.0 ppb120,400

* 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 Hydrogen sulfide, but it likely has the contaminant in its water supply.