Well Drilling in Grayson County, TX

• Coverage includes rural Sherman and Denison, Pottsboro, Gordonville, Whitesboro, Collinsville, Tioga, Gunter, Van Alstyne, Howe, Tom Bean, Whitewright, Bells and Southmayd.
• Red River GCD covers Grayson and Fannin counties. Ask the driller to confirm the registration and Notice to Proceed are in hand before the rig shows up.
• Another North Texas county on this site is Parker County, west of Fort Worth, which draws on the Trinity Aquifer under a different district.
• Texas licenses water well drillers and pump installers separately through TDLR, so check the license matches the work.

• New domestic wells for acreage homes in the south county
• Registration and Notice to Proceed paperwork with Red River GCD
• Deep submersible pump replacement
• Iron and sediment problems in shallow Woodbine wells
• Livestock and small irrigation wells
• Plugging old or abandoned wells before a sale

• Local cost: at the TWDB 2016+ median of about 340 ft, the calculator estimate for a complete well is $10,000–$26,600. At the 75th percentile (425 ft) it's $12,125–$32,125, and at the 90th (about 600 ft) $16,500–$43,500. The method is the site calculator's formula: depth × $25–$65/ft, plus about $1,500–$4,500 for the permit, pump and pressure tank. That's an estimate, not a quote.
• District fees on top: Red River GCD's fee schedule lists $100 to register a well under 17.36 gpm and a $250 driller log deposit, refundable when the conditions in the district rules are met.
• Bigger wells cost more to permit. Red River GCD's fee schedule lists $750 for registration and a production permit when a well is designed for more than 17.36 gpm, and $2,500 more when the application needs a hydrogeological report (200 gpm or more).
• Pump depth: the median pump setting in those TWDB driller reports is about 240 ft, so a deep submersible, heavier drop pipe and wire are part of most Grayson County bids.

• Step 1, register first: Red River GCD says all new water wells must be registered with the district and get a Notice to Proceed before drilling and operation.
• Step 2, pay the district: Red River GCD's fee schedule lists $100 for a well under 17.36 gpm and $750 above that rate, plus the $250 driller log deposit.
• Step 3, drill on time: where TCEQ approval isn't needed, the district says the well must be drilled and completed within 240 days of approval or the registration expires, with one 240-day extension available.
• Step 4, drill and report: use a TDLR-licensed driller, who files the state well report that TWDB publishes in its Submitted Drillers Reports database, and get the driller log to the district to recover the deposit.
• Step 5, test and plug: test the water before drinking it, and plug any abandoned well under 16 TAC §76.104.

• TWDB's groundwater database lists Grayson County wells mainly in the Woodbine Sand (230 records) and the deeper Antlers Sand of the Trinity Aquifer (135), plus a few wells in shallow alluvium along creeks and in the Paluxy Formation.
• TWDB driller reports, new domestic wells since 2016: 25th percentile 260 ft, median 340 ft, 75th percentile 425 ft, 90th about 600 ft, deepest 1,550 ft.
• TWDB describes the Woodbine Aquifer as sandstone interbedded with shale and clay in three water-bearing zones; the lower zones yield the most water, while the upper zone yields limited water that tends to be very high in iron.
• TWDB says Woodbine water to a depth of about 1,500 feet is generally fresh, and slightly to moderately saline below that, which is one reason drillers stop well short of the deepest sands for a house.
• The Trinity Aquifer's Antlers Sand lies beneath the Woodbine and comes closer to the surface toward the west side of the county, where TWDB records list Antlers wells at a median of about 1,400 ft, many of them public supply wells.

Sherman (rural) · Denison (rural) · Pottsboro · Gordonville · Whitesboro · Collinsville · Tioga · Gunter · Van Alstyne · Howe · Tom Bean · Whitewright · Bells