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EWG's Tap Water Database — 2019 UPDATE

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Isophorone

Status: No national drinking water standard exists

 

2015-2017:

FOUND

1

states detected

4

utilities detected

67,053

people served

States reporting isophorone in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
Rhode Island467,053
MORE
LESS

Filtering technologies that reduce isophorone

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Activated Carbon

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Reverse Osmosis

Utilities with the highest amounts of isophorone, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Naval Station, NewportNewport, RI4 of 550.00727 ppb7,871
City of Newport*Newport, RI4 of 550.00727 ppb42,000
Portsmouth Water & Fire DistrictPortsmouth, RI4 of 550.00727 ppb16,864
United States Navy (fort Adams)Newport, RI4 of 550.00727 ppb318

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

UtilityLocationTestsAverage levelPeople served
City of Newport*Newport, RI4 of 550.00727 ppb42,000
Portsmouth Water & Fire DistrictPortsmouth, RI4 of 550.00727 ppb16,864

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