BUTLER COUNTY, PENNSYLVANIA · 75 MIN FROM OUR GREENVILLE OFFICE
On EPA’s map, Petrolia sits in the Petroleum Valley water authority’s service area. The authority’s lead rounds ending in 2018 and 2019 were over EPA’s 0.015 mg/L action level, at 0.027 and 0.0216 mg/L. The three rounds since came in under it, and the 2025 round is recorded as 0 mg/L.
Serving our communities since 1967
Fairview · Karns City · Fairview Township · Bruin · Parker Township · Perry Township · Chicora · Bradys Bend Township · Parker · East Brady
WHAT WE DO IN PETROLIA
Whether you’re on a private well or city water, the same crew handles the water source, the pressure, and what comes out of the tap.
System results aside, lead usually comes from household plumbing, so your own tap can differ. A test shows it, and Oasis Sanic reverse osmosis at the kitchen sink is the usual answer if it finds lead. On a private well, testing starts with iron and manganese.
Petrolia is tied for 15th of 21 Butler County towns by median well depth. Bedrock came within 22 feet in three in four logs, so casing is usually short, and most logged wells stopped by 201 feet.
Yields in the area are healthy: the median log gave 20 gallons per minute, and three in four gave 10 or more. That usually covers a household’s peak use with a submersible pump and pressure tank sized to the house.
WELLS AROUND PETROLIA
The 200 domestic wells on file within 5 miles of Petrolia, from the state’s drilling logs: your neighbors’ wells, and the best guide to this ground.
middle half 92–201 ft
middle half 10–25 gpm
middle half 8–22 ft
PaGWIS records
Source: PaGWIS (PA DCNR), domestic wells within 5 miles, retrieved 2026-09-30; older paper-record locations are approximate.
EPA’s record for Petroleum Valley RWA lists five lead sampling rounds. The 90th-percentile result was 0.027 mg/L for the round ending September 2018 and 0.0216 for the round ending June 2019, both over the 0.015 mg/L action level. The rounds after that came in at 0.00349 in 2022, 0.00267 in 2023 and 0 mg/L in 2025, all under it.
These figures come from taps sampled across the system, and a single home can differ depending on its plumbing. A water test at your own tap answers the question directly. If lead turns up, reverse osmosis at the kitchen sink is the usual fix. Customers get the authority’s water report, which sets out its results.
EPA lists Petroleum Valley RWA with no wells or treatment steps of its own. It buys groundwater from the East Brady Water System, which treats it before sale, including 4-log treatment for the ground water rule, a virus-disinfection standard. The authority serves about 3,800 people through 1,290 connections.
For homes on private wells, the logs put rock at a median 15 feet and the yield at a median 20 gallons per minute. The Allegheny Formation is mapped under the town, Pennsylvanian sandstone, shale, limestone, clay and coal. A submersible pump sized to the well and a periodic well inspection keep that supply dependable, and pump repair comes from the same crew.
WATER IN BUTLER COUNTY
In USGS samples from across Butler County, taken 1926–1997, 68% of wells were hard or very hard, 56% carried iron above the staining line, 86% had manganese above 0.05 mg/L. The full record, and what it means for treatment, is on the Butler County page; your own well gets its own test.
WHY PETROLIA CHOOSES CHATFIELD
Rated 4.7 on Google across 104 reviews. Here is what working with us looks like, in a customer’s words.
“We bought a new home November 1st, 2024 and low and behold it had a collapsed well. After several quotes, we chose Chatfield drilling, and we’re glad we did! Matt & his team arrived quickly to assess the situation, and formulate a plan to get the H2O flowing again. Even through the holidays, they did not waiver. Eric their driller worked hard in the brutal NE Ohio cold to pound a well for us. We are beyond pleased, and have fantastic water!”
NEARBY
We send the same crews to each of these towns. If you’re between towns, pick the closest one; the service doesn’t change.
A LITTLE CLARITY
Our Greenville office (854 Mercer Rd., Greenville, PA 16125) is about 75 minutes and 55 miles by road from Petrolia. Service calls for Petrolia are scheduled from there.
Petrolia and the municipalities around it: Fairview, Karns City, Fairview Township, Bruin, Parker Township, Perry Township, Chicora, Bradys Bend Township, Parker, East Brady. Beyond those, the rest of the 21 Butler County communities on our service map, from the same office.
Pennsylvania’s groundwater database (PaGWIS) lists 200 domestic wells within 5 miles of Petrolia: the median is 140 feet deep, and the middle half fall between 92 and 201 feet. The median well was logged at 20 gallons per minute. Drillers reached bedrock at a median of 15 feet. Your own well's depth depends on the ground under your lot.
It’s how EPA describes the treatment the East Brady Water System gives the groundwater it sells: disinfection meant to meet the Ground Water Rule’s standard for inactivating viruses. Petroleum Valley RWA buys that treated water and lists no treatment of its own, so its customers get the details from the authority’s water report.
Most can. The 193 yield logs in the area have a median of 20 gallons per minute; three in four reached at least 10, and a quarter 25 or more. The pump and pressure tank are sized from your own well’s yield test, and on an existing well, an inspection measures the flow it actually delivers.
Talk with the Chatfield team.
(724) 588-2652A LITTLE KNOWLEDGE GOES A LONG WAY
WATER TESTINGWhat a test measures, what the results mean, and what happens next.
WELL DRILLINGWhat drives the price of drilling a well in our region, and what to ask before you sign.
WATER PROBLEMSIron and manganese in well water: what causes it and how a test confirms it.
YOUR NEXT STEP
Tell us what you’re noticing. We’ll come out from Greenville, test your water, and walk you through the next step.