Public Water Quality

The purpose of this page is to update Township residents on the current status of the public water in Upper Dublin Township, related to the groundwater contamination originating from the Willow Grove Naval Air Base. The safety of our residents is of utmost importance to Upper Dublin Township and, as such, we will make every effort to provide the most current information possible as it becomes available.

Public water in Upper Dublin is supplied by three providers: Aqua Pennsylvania, Ambler Borough Water Company and North Wales Water Authority (NWWA). At this time, all three utilities have provided us with statements that, although both public and private groundwater sources in the vicinity of the Willow Grove Naval Air Station and the Warminster Naval Air Development Center were impacted by these contaminants, the water serving Upper Dublin Township falls within the limits established by EPA health advisory. Water is continually monitored and tested to ensure compliance with all state and federal drinking water regulations and advisories.

This information does not necessarily apply to private wells, and it is recommended that residents with private water have their wells tested. Both the EPA and CDC recommend contacting a State Certified Laboratory for Drinking Water Testing. Montgomery County provided a list of certified labs.

Questions should be directed to your individual water supplier. To determine your provider, view a Water Utilities Service Area Map on our website that is a rough guide only.

Public Water Providers' Contact Information



The Board of Commissioners passed Resolution-18-2291 in support of Pennsylvania House Bill 705, "Pennsylvania Safe Drinking Water" Act on July 10, 2018.

Resident-Created Facebook Page

An Upper Dublin resident has created a Facebook page for residents to share information called "Upper Dublin and Neighboring Areas Water Updates."

Reports, Statements & Information

Aqua PA - PFC (PFOA & PFOS) Test Results for Upper Dublin Township Well

Horsham Township Water Quality Information

US Environmental Protection Agency - PFAS website

Informational Links (Provided by the Philadelphia office of the Center for Disease Control - CDC)

Agency for Toxic Substances and Disease Registry (ATSDR)/CDC for information on PFAS chemicals and health effects: or call 1-800-CDC-INFO

Private well sampling, including a map of the sampling areas near former Naval Air Station Joint Reserve Base Willow Grove, can be found at:
The Navy has confirmed that the sampling area for this investigation does not extend west of Horsham Township.

Montgomery County Department of Health also has a website with contact  information for various organizations involved in the Willow Grove/Warminster PFAS investigations:

EPA’s factsheet on the PFOA and PFOS health advisory levels:

Home Water Treatment Technologies (Provided by the Philadelphia office of the Center for Disease Control - CDC)

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.”
See page 3 at

EPA’s discussion on home treatment options on page 65 at

Minnesota study to evaluate home point of use treatment devices.  This report notes that both activated carbon (AC) and reverse osmosis (RO) treatment technologies have the ability to effectively reduce PFAS in water (note, the detection limit achievable at the time of this 2008 study was higher than is feasible now):


Page updated 6/9/22

Report an Issue

Would you like to report an issue?

Call Upper Dublin Township,

at (215) 643-1600 ext. 0

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