The purpose of this post is to update our residents on the current status of the public water in Chalfont Borough, related to the presence of PFCs in the groundwater. Aqua PA provides all Chalfont Borough residents with public water. They have provided us with the link below, relative to Chalfont Borough water monitoring results.
The U.S. Environmental Protection Agency (EPA) identifies the contaminants to regulate in our drinking water, and they set regulatory limits for amounts of certain contaminants. AQUA uses the EPA’s maximum contaminant levels to ensure water quality.
There are some contaminants for which the EPA develops health advisories that do not have set regulatory limits. The health advisories provide technical information on health effects. PFOA and PFOS are included in those contaminants that have no regulatory limit, but are associated with a health advisory. These chemicals are among a family of manmade chemicals that have been used for decades as an ingredient to make products that resist heat, oil, stains, grease and water, and in products for firefighting at airfields. They are extremely resistant to breaking down in the environment.
In 2009, EPA published provisional health advisories for PFOA and PFOS. At the time they were established, these advisories were as follows; PFOS: 200 parts per trillion; and PFOA: 400 parts per trillion. In May 2016, EPA replaced the 2009 provisional advisories with new, lifetime health advisories that combined the two chemicals and set a 70 parts per trillion health advisory level for both.
Chalfont Borough will continue to keep residents informed via this page as we receive information from AQUA Pennsylvania. All questions should be directed to Aqua PA at 877-987-2782.
You can visit their website at https://www.aquaamerica.com/our-states/pennsylvania.aspx.
The following links may be helpful:
2020 Aqua PA Water Quality Report for Chalfont Borough
EPA’s factsheet on the PFOA and PFOS health advisory levels:
Home Water Treatment Technologies
Home water treatment technologies fact sheet statement from the EPA states that: “Home drinking water treatment units are typically certified by independent third party organizations against American National Standards Institute (ANSI) standards to verify their contaminant removal claims. Some home filters remove impurities using activated carbon and reverse osmosis, which are the same technologies utilized by public water supply systems to remove PFOA and PFOS. However, there currently are no ANSI protocols for testing home treatment systems to verify that these devices effectively remove PFOA and PFOS or how frequently the filters should be changed in order to maintain removal efficiency. NSF International is currently developing such protocols.” NSF is the National Sanitation Foundation and NSF International “protects and improves global human health. Manufacturers, regulators and consumers look to NSF International to facilitate the development of public health standards and provide certifications that help protect food, water, consumer products and the environment.”
See NSF’s information on Contaminate Reduction Claims Guides.
See NSF’s article on PFOA/PFOS in Drinking Water.
See NSF’s article on Choosing a Drinking Water Filter to Reduce Contaminates.
Check out EPA.gov and this fact sheet on PFOA/PFOS Drinking Water Health Advisories: https://www.epa.gov/sites/production/files/2016-05/documents/drinkingwaterhealthadvisories_pfoa_pfos_5_19_16.final_.1.pdf.
Read the EPA’s discussion on home treatment options starting on page 65: https://www.epa.gov/sites/production/files/2016-05/documents/pfoa_health_advisory_final_508.pdf.
Updated: August 2, 2021