DFW Well Service

Need well service in Bonham?

DFW Well Service helps property owners with water well drilling, pump service, inspections, and related well issues across North Texas.

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Welcome to Bonham, TX — DFW Well Service serves Bonham and Fannin County

Water Well Drilling & Pump Repair in Bonham, TX | DFW Well Service

Service Area Overview

Licensed well drilling and pump service in Bonham and Fannin County, primarily targeting the Woodbine sandstone — depth varies sharply by location.

Services We Provide in Bonham

DFW Well Service is a trusted provider of water well and pump services in Bonham, the Fannin County seat, and throughout the rural communities that depend on private wells in this part of northeast Texas. Whether you need a new well drilled or an existing system repaired, we have the equipment and expertise to get the job done.

Well Depth & Geology in Bonham Area

Isometric geological cross-section cube illustration showing Fannin County, Texas stratigraphy — Topsoil, Cretaceous limestone outcrop transition, Woodbine Formation / Woodbine Aquifer, Washita and Fredericksburg Groups, and the Woodbine aquifer at the base.

Tap any layer in the cube — or in the list below — to see what it is and what it means for drilling a well here.

  1. Topsoil — Blackland margin / sandy loam transition
    0–15 ft
  2. Cretaceous limestone outcrop transition
    15–60 ft
  3. Woodbine Formation / Woodbine Aquifer
    outcrop band; up to ~1,200 ft top downdip
Tap or hover a layer in the cube to see what's beneath the surface here.

This cross-section shows the layer stack typical of Fannin County. The exact formations and depths under a specific Bonham-area property vary — see the details above.

Explore the full Fannin County geology →

Primary Aquifer
Woodbine

Secondary: Trinity (Antlers — deep, generally not residential)

Typical Well Depth
Varies by location

We estimate from nearby well records

Groundwater District
Red River GCD
Confinement
outcrop band roughly parallel to the Red River; dips eastward to ~1,200 ft top near the eastern Fannin County line

Fannin County overview → Permit & regulations → TDLR License #61234 DKMPW Updated June 4, 2026

Wells around Bonham draw mainly from the Cretaceous Woodbine Formation, the principal residential aquifer across Fannin County. The Woodbine reaches the surface (outcrops) in a broad band running roughly parallel to the Red River and tilts down to the southeast, so the depth to productive water depends sharply on where your property sits relative to that band. The deeper Trinity Group — here the Antlers Formation — underlies central and southeastern Fannin County but is generally too deep for a home well. The county’s sandy near-surface geology is easier (and cheaper) to drill than the limestone counties to the west, so costs stay relatively modest where the Woodbine is reachable at shallow to moderate depth.

Fannin County Permit Requirements

Well construction in Bonham and throughout Fannin County is regulated by the Red River Groundwater Conservation District (RRGCD). A permit is required from the district before drilling begins, and construction must comply with TDLR standards for casing depth, grouting, and well completion. The RRGCD also requires a completion report following construction. See our guide to Fannin County water well regulations for the complete permit checklist.

Call DFW Well Service at (940) 536-8560 for a free estimate on your Bonham-area well project. We serve all of Fannin County and neighboring areas with honest, professional well and pump services.

Frequently Asked Questions

What formations supply well water in the Bonham area?
Wells in Bonham and Fannin County draw mainly from the Woodbine sandstone, the county's principal residential aquifer. The Woodbine reaches the surface (outcrops) in a broad band running roughly parallel to the Red River, so how deep you'll drill depends on where your property sits relative to that band. The deeper Trinity Group — here the Antlers Formation — lies beneath central and southeastern Fannin County but is generally too deep for a home well: Red River GCD reports its top exceeds 3,500 feet in southeastern Fannin.
How deep are water wells drilled near Bonham?
There's no single typical depth across Fannin County — it varies sharply with where a property sits relative to the Woodbine outcrop band along the Red River, so we review the driller's logs from neighboring wells before recommending a target depth. Properties near the outcrop band may reach productive Woodbine fairly shallow, while farther east the Woodbine deepens — Red River GCD reports its top can be about 1,200 feet down near the eastern county line.
What does well drilling cost in Fannin County?
Drilling rates near Bonham typically run $28–$40 per foot — the sandy Woodbine formations here are less expensive to drill than the limestone counties to the west. Total cost depends on completion depth and the full system (casing, pump, pressure tank). We provide a free itemized written estimate after reviewing neighboring driller's logs for your parcel.
Is there a groundwater district in Bonham?
Yes. Fannin County is within the Red River Groundwater Conservation District (RRGCD). All new wells require a permit from the RRGCD before drilling begins. DFW Well Service handles permit applications as part of every new well project.
Is water quality good in Bonham-area wells?
Woodbine wells in Fannin County generally produce usable water, but iron and manganese are common concerns — the upper Woodbine zone has documented iron content, and outcrop areas can have excessive iron. Hardness, sulfate, and total dissolved solids that rise below about 1,500 ft of well depth are also worth testing for. We conduct water quality testing on all new wells and can recommend filtration or treatment based on results.
Can you inspect a well before I purchase property near Bonham or Lake Bonham?
Yes. Pre-purchase well inspections are one of our most valuable services. We check pump condition, water level, pressure, flow rate, and water quality before you commit to a purchase. This is especially important for older properties around Lake Bonham where well ages and conditions vary widely.
Is the well water in Bonham salty or brackish?
Mostly fresh. The Woodbine around Bonham is fresh along its outcrop band (where the sand reaches the surface), though it grows saltier below about 1,500 feet and toward the east, per Texas Water Development Board data. Iron is a more common issue than salt here — budget for an iron and total-dissolved-solids test (total dissolved solids being a measure of how mineral-heavy the water is).

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