By Josh McKnight | The McKnight Team
A crack in the 68-year-old Twin Oaks pipeline operated by Energy Transfer went undetected for 16 months, releasing jet fuel and associated chemicals into groundwater in Upper Makefield Township. Residents have lived with contaminated drinking water wells for 18 months. More than 200 now rely on company-funded home filtration systems.
Bucks County well water testing is not a formality for anyone buying in this part of the county, and the Upper Makefield case shows how long a problem can run before anyone detects it.
Where the Cleanup and the Oversight Stand
Energy Transfer is only now testing a vacuum extraction system to pull contamination from the soil. Federal oversight has been thin. The Environmental Protection Agency declined jurisdiction, on the position that groundwater falls outside Clean Water Act protection.
The Pipeline and Hazardous Materials Safety Administration, which sits under the Department of Transportation, responded strongly at first and then softened its consent agreement with Energy Transfer. The agency has lost significant staff and initiated a record-low number of enforcement actions in 2025.
That leaves the Pennsylvania Department of Environmental Protection overseeing cleanup under a voluntary state program that critics say was never designed for a residential drinking water crisis. U.S. Rep. Brian Fitzpatrick and U.S. Sen. John Fetterman are pushing for stronger pipeline safety legislation and federal funding to connect the affected neighborhood to public water.
What Bucks County Well Water Testing Actually Tells You
The standard well test is narrower than you probably assume. Coliform bacteria. Nitrates. Sometimes lead. That panel would not have caught this. Petroleum hydrocarbons and the compounds that travel with jet fuel require a separate test that nobody orders for you by default, which means Bucks County well water testing only covers what you specifically ask it to cover.
Set that against what the numbers show right now. The average Bucks County home value is $530,927, up 3.3 percent over the past year, with homes going to pending in around seven days, per Zillow data through July 31, 2026. Zillow does not publish separate figures for Upper Makefield, so the county number is the closest verified benchmark.
Seven days to pending. That is roughly how much time you get to decide what to test for.
Why Disclosure Is the Part Most Sellers Get Wrong
The Pennsylvania seller disclosure statement asks about the water supply and about known material defects. The operative word is known. A seller who has received notice of contamination, or who has a filtration system installed by a pipeline operator, has knowledge that must be disclosed. There is no ambiguity there.
The harder cases sit at the edges. A property two miles from a known plume, never tested for hydrocarbons, with no notice from anyone. That seller may honestly have nothing to disclose, and you may still very much want to know. Disclosure law protects you against concealment. It does not substitute for your own due diligence.
Pennsylvania is not an attorney state for residential transactions, which means this falls to the agent, the inspector, and the buyer to handle correctly. That is a real responsibility and it is not evenly met across the industry. Both things can be true. Most sellers in upper Bucks have nothing to hide, and a buyer is still right to test beyond the standard panel.
If you have a well anywhere near the Twin Oaks corridor, tell your neighbor to test for hydrocarbons specifically. The routine panel will come back clean either way.
What This Means for You
If you are buying a well-water property in upper Bucks, order an expanded panel that includes volatile organic compounds and petroleum hydrocarbons, not just the standard bacteria and nitrate test. The additional cost is modest against the exposure. If you are selling, test before you list. A clean expanded panel in hand is a marketing asset, and it removes the single most effective negotiating tool a buyer has in a well-water transaction.
Water source varies enormously street by street across this part of the county, and plenty of buyers do not know whether a property is on public water until the disclosure arrives. Newtown, immediately south of Upper Makefield, is largely on public systems and draws many of the same buyers. The market detail on our Newtown PA homes for sale page is a useful comparison point.
Thinking about buying or selling in Upper Makefield or Bucks County? Let’s talk.
Frequently Asked Questions About Bucks County Well Water Testing
How much does well water testing cost in Bucks County?
A standard panel covering bacteria and nitrates is the least expensive option and the most commonly ordered. An expanded panel adding volatile organic compounds and petroleum hydrocarbons costs meaningfully more, and it is the one that would detect fuel contamination.
Does contaminated well water have to be disclosed when selling?
Yes, if the seller knows about it. The Pennsylvania disclosure statement covers the water supply and known material defects, and a filtration system installed by a pipeline operator constitutes knowledge that requires disclosure.
Should I buy a home on well water in upper Bucks County?
Well water is common and generally fine throughout the region. The decision turns on testing, not on avoidance. Order the expanded panel, review the results before contingencies expire, and price the outcome accordingly.
What happens next with the Upper Makefield cleanup?
Energy Transfer is testing a vacuum extraction system while the Pennsylvania Department of Environmental Protection oversees the work. Federal lawmakers are seeking funding to connect the affected neighborhood to public water, which would end the reliance on filtration.
Join The Discussion