MERCER COUNTY, PENNSYLVANIA · 24 MIN FROM OUR GREENVILLE OFFICE
Most of the borough's listed sources are springs: EPA lists five springs and one well for Stoneboro Water Works, and one plant, Pringle Springs. For private wells, the notable figure is depth to rock, a median 40 feet in 311 logs and 65 or more in a quarter of them, which means longer casing on many lots.
Serving our communities since 1967
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WHAT WE DO IN STONEBORO
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.
The water works chlorinates before and after treatment and lists sequestration for iron and manganese. Some of its water is bought from Sandy Lake Borough, which treats it. A private well is tested for iron, manganese and hardness before anything is fitted.
The rock mapped at the town center is the Shenango Formation, sandstone, shale and siltstone. By median well depth the town ranks 13th of 15 in Mercer County, with a quarter of the 586 logs at 115 feet or more.
Yields are generous: the median across 464 logs is 25 gallons a minute, and three in four give 15 or more. That leaves room for a full-size submersible or constant-pressure pump on most wells, confirmed by a flow test.
WELLS AROUND STONEBORO
The 586 domestic wells on file within 5 miles of Stoneboro, from the state’s drilling logs: your neighbors’ wells, and the best guide to this ground.
middle half 62–115 ft
middle half 15–35 gpm
middle half 23–65 ft
PaGWIS records
Source: PaGWIS (PA DCNR), domestic wells within 5 miles, retrieved 2026-09-30; older paper-record locations are approximate.
Stoneboro Water Works serves 536 connections. EPA lists six sources, one well and Springs #1 through #5, and one plant, Pringle Springs, plus water bought from Sandy Lake Borough and treated by that seller, including 4-log virus treatment (enough disinfection to kill nearly all viruses) under EPA's Ground Water Rule. The system itself records gaseous chlorination before and after treatment, sequestration for iron and manganese, and 4-log treatment of viruses. No lead rounds appear in the EPA record we use, and the water works sends customers their water report.
Private wells are tested on their own. Mercer County's USGS samples put the median iron reading at 0.45 mg/L, above the 0.3 mg/L staining line. A water test shows your levels, and a FerronX iron removal system takes iron out where the water enters the house.
Casing usually runs from the surface down to rock, and here rock takes a while to reach: a median 40 feet across 311 logs, 23 or less in a quarter of them and 65 or more in another quarter. At the deep end, casing becomes a sizable part of the well, and the logs nearest your lot are the best early guide to which end you are on.
With the median well at 82 feet, much of the drilling still happens in rock below the casing. Residential well drilling lays out the steps, casing included, and the cost of a new well explains why casing length shows up in the price. PA DEP permit assistance is part of the job, and nearby Sandy Lake has its own page.
WATER IN MERCER COUNTY
In USGS samples from across Mercer County, taken 1928–2023, 59% of wells were hard or very hard, 58% carried iron above the staining line, 54% had manganese above 0.05 mg/L. The full record, and what it means for treatment, is on the Mercer County page; your own well gets its own test.
WHY STONEBORO 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 24 minutes and 13 miles by road from Stoneboro. Service calls for Stoneboro are scheduled from there.
Stoneboro and the municipalities around it: Sandy Lake, Lake Township, Sandy Lake Township, New Vernon Township, Jackson Center, Mill Creek Township, Jackson Township, Worth Township, New Lebanon, Fairview Township. Beyond those, the rest of the 15 Mercer County communities on our service map, from the same office.
Pennsylvania’s groundwater database (PaGWIS) lists 586 domestic wells within 5 miles of Stoneboro: the median is 82 feet deep, and the middle half fall between 62 and 115 feet. The median well was logged at 25 gallons per minute. Drillers reached bedrock at a median of 40 feet. Your own well's depth depends on the ground under your lot.
Yes. EPA lists gaseous chlorination before and after treatment, sequestration for iron and manganese, and 4-log treatment of viruses, a near-total virus kill, on the water works system, whose sources include five springs and a well. Water it buys from Sandy Lake Borough is treated by that seller. Homes on the line get the details in the system's water report.
It can. Casing usually runs from the surface down to rock, and in the local logs rock ranges from 23 feet or less in the shallowest quarter to 65 or more in the deepest. A lot at the deep end needs more steel pipe before drilling in rock begins. The cost page on our site explains how footage and casing add up.
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.