Well Drilling in Limestone County, TX

• Coverage across rural Mexia and Groesbeck, Coolidge, Kosse, Thornton, Tehuacana, Prairie Hill, and homesites around Lake Limestone and Lake Mexia.
• Routing includes both drilling contractors and licensed pump installers. Texas licenses these separately.
• Limestone County isn't inside a groundwater conservation district (TWDB groundwater database; TCEQ district map, March 2026). Confirm your parcel on TCEQ's map before drilling.

• New Carrizo-Wilcox wells for homesites and acreage builds
• Replacing older shallow or hand-dug wells with drilled, cased, sealed wells
• Pump and pressure-tank replacement
• Livestock wells for small ranches
• Iron and taste treatment after a water test
• Plugging abandoned wells on newly bought land

• Most new domestic wells here finish at 240–460 ft (TWDB driller reports since 2016). At our calculator's published $25–$65 per foot plus pump, tank and permit, that's an estimated $7,500–$34,400 complete, or about $10,500–$27,900 at the 360-ft median.
• No groundwater district means no district registration fee. The calculator's $200–$500 permit line is a national figure.
• In the sandy Carrizo-Wilcox, screen and gravel-pack choices affect both price and how long the well stays sand-free.
• Iron treatment is a common add-on after the first water test.

• Texas requires TDLR-licensed water well drillers and pump installers. The only exception is a landowner drilling on their own property for their own use. The driller (or the self-drilling landowner) files a State of Texas Well Report.
• No groundwater district covers Limestone County, so private wells don't need district registration (TWDB). State setbacks still apply (16 TAC §76.100): 150 ft from livestock pens, cemeteries and other concentrated contamination sources, 100 ft from a septic drain field, and 50 ft from a septic tank and from the property line.
• The county's subdivision rules (revised Dec 27, 2010, based on TWDB's model rules) require developers who create residential lots of 5 acres or less served by individual wells to file a 30-year groundwater availability study and test-well water-quality results.
• Inside Mexia city limits, a new well (other than for irrigation) isn't allowed where city mains are within 200 ft. Groesbeck requires occupied buildings to connect to city water where service is available.
• The landowner is responsible for plugging an abandoned or deteriorated well under 16 TAC §76.104. A well that isn't deteriorated may instead be capped with a 400-lb-rated cover.

• Carrizo-Wilcox aquifer across most of the county: 242 of 351 wells in TWDB's groundwater database. New domestic wells since 2016 range from about 150 ft (10th percentile) to 520 ft (90th percentile), with a median pump setting of 220 ft.
• TWDB samples from the Carrizo-Wilcox (1990 and later) show generally moderate dissolved solids (median 339 mg/L), low nitrate and low fluoride. Test your own well; CDC recommends at least yearly tests.
• Iron, hardness or taste problems are treatable once a certified lab test shows what's in the water.

Mexia (rural) · Groesbeck (rural) · Coolidge · Kosse · Thornton · Tehuacana · Prairie Hill · Lake Limestone area · Lake Mexia area