Days After a Forced Takeover, Rock Spring Water Customers Are Under a Boil Water Advisory

Pennsylvania American Water lost positive pressure across the Rock Spring Water Company system in Ferguson Township on September 15, triggering a boil water advisory for about 480 connections, just months after regulators ordered the struggling utility sold. Here's what the advisory means and why the backstory matters.

What happened in Ferguson Township on September 15

Pennsylvania American Water notified customers on September 15 that a loss of positive water pressure had occurred somewhere in the Rock Spring Water Company distribution system serving Ferguson Township in Centre County. The notice applies to roughly 480 customer connections. A loss of positive pressure doesn't necessarily mean contamination has already happened, but it creates the conditions for it: when pressure in a pipe drops, water and even soil around a crack or loose fitting can get pulled backward into the system through back-siphonage, which is why regulators treat it as an automatic trigger for a boil water order rather than waiting to test first.

Pennsylvania American Water is providing bottled drinking water and a non-potable water tanker for affected customers while the advisory is in effect, and it's telling residents to bring all tap water to a rolling boil for a full minute, or use bottled water, before drinking it, making ice, brushing teeth, or preparing food. The advisory stays in place until follow-up lab samples confirm the water meets safety standards.

Why this system was already under scrutiny

This isn't Rock Spring's first appearance in front of regulators. The Pennsylvania Public Utilities Commission appointed Pennsylvania American Water as a receiver to run Rock Spring back in March 2025 after years of documented service problems at the small, privately owned utility. In February 2026, a PUC administrative law judge recommended that Pennsylvania American Water be allowed to permanently acquire the system, concluding that the sale was in the public interest. The full Commission adopted that recommendation on a 5-0 vote in June, clearing the way for a permanent purchase that regulators say should eventually improve service for roughly 1,000 Rock Spring customers, though it may also mean higher bills once the acquisition closes.

That timeline matters for how residents should read this advisory. A single pressure-loss event during an ownership transition isn't necessarily evidence the new owner is doing anything wrong. It's a reminder that fixing years of deferred maintenance on a small rural water system takes longer than a single vote, and that customers on systems like this one should expect more of these notices, not fewer, while infrastructure upgrades catch up.

What to do at home during and after the advisory

During the advisory, treat every tap in the house as untreated unless it's been boiled or is bottled, including water used for pet bowls, ice makers, and any dishwasher cycle that doesn't reach a full sanitizing temperature. Once Pennsylvania American Water announces the advisory has been lifted, don't assume the water is instantly back to normal. Utilities typically recommend running cold taps for several minutes to flush stagnant water out of household plumbing, and running an ice maker through a few cycles and discarding the ice before using it again.

Homes on a well or a small system like Rock Spring should also treat this as a prompt to check their own water heater and any point-of-use filters. A pressure event that pulls potential contaminants into the main line can also push sediment loose inside older galvanized or copper household piping, and a water heater that hasn't been flushed in a year is a common place for that sediment to settle and start affecting hot water quality even after the advisory is officially over.

6 Things to Know During a Boil Water Advisory

Rock Spring customers, or anyone else who gets one of these notices this fall, can work through the same short list.

1. Boil for a full minute, not just until it looks hot: A rolling boil for one full minute is the standard most utilities, including Pennsylvania American Water, are advising here.
2. Cover the ice maker and pet bowls too: Ice cubes and pet water are easy to forget but carry the same risk as a glass of tap water.
3. Skip the dishwasher's quick cycle: Only a cycle that reaches a full sanitizing temperature is considered safe during an advisory; when in doubt, hand-wash with boiled or bottled water.
4. Don't rely on a water filter pitcher alone: Most household carbon filters aren't rated to remove the bacteria a pressure-loss event can introduce.
5. Flush the tap for a few minutes once it's lifted: Run cold water taps to clear stagnant water from household pipes before trusting them again.
6. Watch for sediment in hot water afterward: A pressure event can loosen sediment inside older pipes and water heaters; if hot water looks cloudy or rusty for more than a day, it's worth a professional look.

Frequently asked questions

What does a loss of positive pressure actually mean?

It means pressure somewhere in the distribution system dropped low enough that water, or even soil and groundwater near a crack or fitting, could theoretically be pulled backward into the pipes. Regulators treat this as an automatic health risk trigger, separate from any lab test results.

Is this advisory related to Pennsylvania American Water's takeover of Rock Spring?

Not directly. The pressure loss appears to be a standalone system event, but it's happening during the transition period after the PUC's June 2026 vote to let Pennsylvania American Water permanently acquire the long-troubled Rock Spring system.

How long do boil water advisories like this usually last?

It varies, but most last until follow-up lab samples come back clean, which is often one to a few days after the pressure issue is resolved. Pennsylvania American Water will notify Rock Spring customers directly when it's lifted.

Should homes outside the affected 480 connections be concerned?

Not from this specific advisory, but any home on an aging or small private water system can face similar pressure events. It's a reasonable prompt to know your own system's history and how it notifies customers.