DFW Well Service

Need well service in McKinney?

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 McKinney, TX — DFW Well Service serves McKinney and Collin County

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

Service Area Overview

Licensed well drilling and pump service in McKinney, TX, targeting central Collin County's Woodbine aquifer; depth varies by parcel.

Services We Provide in McKinney

DFW Well Service (TDLR License #61234 DKMPW) provides residential and agricultural water well services to customers in McKinney and throughout Collin County.

Well Depth & Geology in McKinney Area

Isometric geological cross-section cube illustration showing Collin County, Texas stratigraphy — Topsoil, Surface materials and younger Upper Cretaceous units above the Woodbine, Woodbine Group / 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 Prairie vertisol
    0–10 ft
  2. Austin Chalk
    10–150 ft
  3. Eagle Ford transition
    150–200 ft
  4. Woodbine Formation
    200–400 ft
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 Collin County. The exact formations and depths under a specific McKinney-area property vary — see the details above.

Explore the full Collin County geology →

Primary Aquifer
Woodbine

Secondary: Trinity

Typical Well Depth
Varies by location

We estimate from nearby well records

Groundwater District
North Texas GCD
Confinement
confined

Collin County overview → Permit & regulations → TDLR License #61234 DKMPW Updated August 6, 2026

McKinney sits in central Collin County, where the Woodbine aquifer is the primary residential water source — it reaches the surface (the outcrop) across central and eastern Collin County before tilting deeper to the east. Beneath the Woodbine lies the deeper Trinity Group, available where a well needs to go further. There’s no single typical depth here: it depends on your parcel, which layer the well targets, and where the Woodbine gives way to the Trinity. TWDB lists both the Woodbine and the Trinity among current water sources in the McKinney area, which is why we pull the driller’s logs from nearby wells before estimating depth.

McKinney’s mix of longtime rural residents and rapid suburban growth creates a varied customer base. Older properties may have wells dating back decades that need inspection, rehabilitation, or replacement. Newer rural homes on acreage east of town need fresh well installations coordinated with construction timelines.

Collin County Permit Requirements

Water wells in McKinney fall under the jurisdiction of TDLR and the North Texas Groundwater Conservation District. Both a drilling permit and a post-completion well report are required. The district enforces setback rules and monitors the aquifer to protect long-term water availability for all county residents.

For more information, visit our guide to Collin County water well regulations.

Contact DFW Well Service at (940) 536-8560 for a free estimate on well drilling, pump service, or water testing in McKinney or anywhere in Collin County. We serve the entire area and can typically schedule work within a reasonable timeframe.

Frequently Asked Questions

Does McKinney, TX have city water or do residents use private wells?
McKinney, the Collin County seat, has municipal water service for homes within the city. Properties on the rural edges of McKinney and in unincorporated Collin County to the east frequently use private water wells, especially on larger tracts outside established water districts.
How deep are wells typically drilled in the McKinney area?
There's no single typical depth across Collin County — it varies meaningfully by parcel and target formation. TWDB lists both the Woodbine aquifer and the deeper Trinity aquifer among current water-supply sources in the McKinney area. We review TDLR-submitted driller's logs from neighboring wells before quoting a depth for any specific property.
What is the water quality like from wells near McKinney?
Collin County groundwater is generally suitable for household use but can contain elevated minerals including iron and hardness. We recommend a baseline water quality test on all new wells. Water softeners and iron filters are commonly installed with new well systems in this area.
What does a new well cost in McKinney, TX?
Drilling in Collin County runs approximately $30–$48 per foot. A complete system including casing, pump, pressure tank, and electrical work depends on the final completion depth and equipment. We provide a free itemized written estimate after reviewing neighboring driller's logs for your parcel.
Do I need a permit to drill a well near McKinney?
Yes. Wells in Collin County require permits from TDLR and the North Texas Groundwater Conservation District. We handle the permit application process for every job.
My well water has started smelling or tasting different — what should I do?
Changes in taste, odor, or color can signal bacterial contamination, changes in the water table, or equipment issues. We recommend water testing as the first step, followed by well inspection if testing indicates a problem with the well itself rather than just the water chemistry.
Is the well water in McKinney salty or brackish?
Generally no. The Woodbine that supplies most McKinney-area wells is fresh, and Texas Water Development Board mapping shows fresh water reaching unusually far across Collin County; the water turns slightly salty only deeper and toward the far eastern edge. Test total dissolved solids (a measure of how mineral-heavy the water is) after drilling to confirm.

Other cities we serve

Our crews cover McKinney and communities across our 19-county North Texas service area.

In Collin County

Elsewhere in North Texas

See all of Collin County
DFW Well Service

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Licensed

TDLR License #61234 DKMPW

Oklahoma License DPC-1042 (Operator #OP-2530)

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