Knowing where it is - a good start
By Rob Smith / ecoRI News staff
 |
| (Photo: Seaside Sustainability Inc./Twitter) |
Environmental officials last week identified
six major sources of PFAS contamination as part of the state’s first
comprehensive investigation into how the substances have impacted drinking
water supplies.
The 200-page draft report issued
by the Rhode Island Department of Environmental Management details where and
how the per- and polyfluoroalkyl substances (PFAS) have tainted locations and
environments around the state.
The investigation is part of a suite of actions from
state officials to respond to the growing number of PFAS detected, as required
by a state law passed in 2022. As of July, Rhode Island water systems are
required to test their drinking supplies for PFAS and report the results to the
state Department of Health (DOH).
According to the latest data from DOH, as of this year 11
water systems have exceeded the
state standard of 20 parts per trillion (ppt), with one additional system
containing PFAS levels in excess of 70 ppt.
PFAS, also known as “forever chemicals,” refer to a wide
variety of synthetic chemicals that have existed in common household products
for decades. From firefighting foam to floor wax to food packaging, PFAS
substances can be found in any product that is grease-, stain- or
water-resistant.
The chemicals are known for their hardy ability to
persist in the environment and inability to break down into further components.
It’s their persistence in the environment that’s led to their toxicity; PFAS
substances have been linked to several cancers, fertility issues, and
developmental delays in children, among other little understood health impacts.
“PFAS are one of the world’s most intractable pollutants,
highly complex, and found just about everywhere,” DEM director Terry Gray said
in a statement. “This report consolidates important scientific work on the
extent of PFAS contamination in Rhode Island.”
DEM identified the following areas as sources of PFAS
contamination around the state:
Department of Defense sites: Many locations around
the state that have been used by the U.S military, including the Navy and
National Guard, have had nearby water supplies test positive for PFAS. The
chemicals were often used in aqueous film-foaming foam (AFFF) and in
electroplating activities.
Naval Station Newport, singled out as one of the most
complex Superfund sites in Rhode Island, was historically used in World War II
as a refueling depot for the Navy. A 2.5 million gallon, partially underground
tank farm and fire suppression system is the main source of PFAS contamination
on the base, according to DEM’s report. Other sites of significant
contamination identified include the former Quonset Naval Air Station and
Charlestown Auxiliary Landing Field, thanks to their use as sites for fire training
and emergency response actions.