MERCER COUNTY, PENNSYLVANIA · 14 MIN FROM OUR GREENVILLE OFFICE
Mercer is the county seat, the courthouse borough in the middle of the county with Findley, East Lackawannock, Jefferson, and Coolspring townships’ farms around it. The borough is on public water; the townships are on wells, and what those homeowners need is well service and water treatment. Chatfield comes from our Greenville office, a short drive up the road.
Serving our communities since 1967
East Lackawannock Township · Coolspring Township · Findley Township · Jefferson Township · Jackson Township · Springfield Township · Jackson Center · Lackawannock Township · Fredonia · Wilmington Township
WHAT WE DO IN MERCER
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.
Mercer-area wells carry the county’s iron and hardness, with sulfur smell and manganese in some. Our water test pins down which. Iron is handled first with a FerronX, smell with a carbon filter after it, and hardness with a softener at the end. On borough water, a CityLux takes out the chlorine.
New wells for homes and farms in Findley, East Lackawannock, Jefferson, Coolspring, and Lackawannock townships, drilled with air rotary or cable tool as the ground calls for. We take care of PA DEP permitting, then set the casing and pump and test water flow before the rig leaves.
Well service is the other thing Mercer homeowners call about, from pump and tank repair to wellhead work and the annual checkup. The crew diagnoses the pump, switch, and tank together, replaces what failed, and carries the common sizes so most repairs finish in one visit.
WELLS AROUND MERCER
The 606 domestic wells on file within 5 miles of Mercer, from the state’s drilling logs: your neighbors’ wells, and the best guide to this ground.
middle half 67–125 ft
middle half 15–40 gpm
middle half 18–48 ft
PaGWIS records
Source: PaGWIS (PA DCNR), domestic wells within 5 miles, retrieved 2026-09-30; older paper-record locations are approximate.
Mercer’s logged wells sit in the shallower half of the county’s towns, 10th among 15 by median depth. The bigger unknown for a new well here is how much loose ground lies above the rock.
In the 373 logs that note bedrock, it starts at a median 30 feet, and one log in four put it at 48 feet or deeper. Casing usually runs down to rock, so its length follows that spread and can run longer than on a shallow-rock lot. Under the town, the map shows Pottsville Formation sandstone and conglomerate. The well drilling cost page explains how depth and casing add up.
A pump isn’t set at the bottom of the hole. It hangs below the level the water falls to while the pump runs, and far enough above the bottom that it doesn’t pull in sediment. That setting comes from measuring the water in your own well once it’s drilled and test-pumped, not from the depth alone, so two 90-foot wells can carry their pumps at different depths.
Yield caps the size. With the local median at 20 gallons a minute, a household is usually well served by a submersible matched to the well, with a pressure tank that limits starts. A home connected to Aqua PA Shenango Valley doesn’t need a well pump at all, and Mercer’s water treatment page covers that supply.
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 MERCER CHOOSES CHATFIELD
Rated 4.7 on Google across 104 reviews. Here is what working with us looks like, in a customer’s words.
“I had the pleasure of having Sam and Hunter for the installation of my new water softener, and I couldn’t be more impressed. The system is working great, and I can already notice a difference in the water quality.”
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
Yes. Wellhead, pump, switch, and tank service for Mercer and the townships around it from our Greenville office, plus the annual checkup that catches the next failure early.
Yes. Iron with the FerronX Iron System, hardness with a softener sized to your test, and the two in sequence when a home has both. Testing comes first.
Yes, and they are inside our core drilling area. Residential and agricultural wells with the method matched to the ground, PA DEP permit assistance, and a flow test as part of the job.
Our Greenville office (854 Mercer Rd., Greenville, PA 16125) is about 14 minutes and 10 miles by road from Mercer. Service calls for Mercer are scheduled from there.
Mercer and the municipalities around it: East Lackawannock Township, Coolspring Township, Findley Township, Jefferson Township, Jackson Township, Springfield Township, Jackson Center, Lackawannock Township, Fredonia, Wilmington 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 606 domestic wells within 5 miles of Mercer: the median is 90 feet deep, and the middle half fall between 67 and 125 feet. The median well was logged at 20 gallons per minute. Drillers reached bedrock at a median of 30 feet. Your own well's depth depends on the ground under your lot.
Mostly footage and fittings: how deep the hole goes, how much casing it takes to reach rock, and the pump, controls and tank it needs. Depth is the biggest single driver, and no log can say where your own well will stop, so ask how footage past the expected depth is priced. A quote follows a look at the site, and the cost page on this site walks through the parts.
It sits at the low end locally, but it isn’t unusual. A quarter of the 472 local logs that record a yield came in at 15 or less, and the middle half ran from 15 to 40. A well at that level still supplies a household when the pump and tank are matched to it, and the flow test gives your own figure.
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 PROBLEMSChlorine or chloramine, how to tell which, and the whole-home fix.
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.