What Ault Wells Cost, Produce, and Require

How deep are wells around Ault?

How much water do wells make near Ault?

Ault well depths are usually shallow, but the spread matters

Reported well depth in the Ault area has a 40-foot median. The middle half runs from 30 to 57 feet, which gives a driller a useful starting point for a conventional plains bid. The depth mix is also clear: 88% of wells are under 100 feet, while 4% fall between 100 and 300 feet, 7% between 300 and 600 feet, and 1% exceed 600 feet.

The outliers are important when evaluating a specific lot. The 90th-percentile depth is 199 feet, and the deepest record reaches 800 feet. Local geology is described in the records as alluvium and plains sedimentary rock, with most permits naming an unnamed or fractured-bedrock aquifer. Neighboring well logs are more useful than a countywide average when setting expectations for your parcel.

Ault yields look strong, but production is not guaranteed

Among the 259 wells that report a pump yield, the median is 100.0 gallons per minute. The middle half ranges from 13.0 to 350.0 gallons per minute. Records show 69% producing more than 15 gallons per minute, 27% producing between 5 and 15 gallons per minute, and 3% producing between 1 and 5 gallons per minute. No reported wells are under 1 gallon per minute.

That is encouraging for a buyer, but it is not a promise for an unbuilt well. Yield records may reflect irrigation and stock wells as well as household wells. The use mix is 45% irrigation, 28% domestic or household, 11% stock, and 18% monitoring. An exempt household-use well is subject to Colorado rules, including the 35-gpm pumping limit, so permitted use and pump design still need review.

Ault water levels show little change in the available record

The 112 wells reporting static water levels have a median depth to water of 22 feet. The middle half ranges from 8 to 80 feet below the surface. Those figures can help with pump planning and trench work, but a static level is a measurement from a particular well at a particular time. It is not the same as a guaranteed pumping level.

The decade comparison does not show a strong dropping trend in this record. Median depth to water was 17 feet in the 1960s and 19 feet in the 2020s. That small difference should not be treated as proof that every parcel is stable. Ask for the date and conditions of nearby measurements, and have the driller consider seasonal variation, nearby irrigation pumping, casing, grout, and the planned pump setting.

Ault's permit history points to an active drilling area

Colorado DWR records contain 1,748 permitted wells within the study area, with 1,166 recorded as constructed. A total of 1,233 report a total depth, while 259 report a pump yield and 112 report a static water level. The newest permit year is 2026, so this is not simply an old rural-well snapshot.

The most active names in the records are Lesh Drilling Inc. (Lesh Jr., Ed), with 312 wells; Authorized (Pe, Pg), with 152; and Quality Well & Pump LLC (Jones, Chris), with 41. These counts describe permit records, not current availability or an endorsement. Before hiring, confirm licensing, insurance, schedule, the written construction scope, and who will handle the DWR filing and pump installation.

What a new Ault well can cost

For Ault's alluvium and plains sedimentary rock, the local drilling model uses a typical rate of $35-$55 per foot. At the 40-foot median depth, the drilled hole works out to about $1,400-$2,200. That is only the drilling portion, not the complete water system.

A finished well including the pump, pressure tank, trenching, and electrical is modeled at about $7,400-$14,200. A bid can move outside that range if the site requires greater depth, difficult access, additional casing or grout, unusual trenching, or changes to the pump and storage design. Ask each driller to separate footage, casing, grout, development, pump equipment, trenching, electrical, testing, and permit-related work so competing bids cover the same items.

Ault buyers should check water quality, yield, and the building site

Low yield is not the main warning sign in the reported Ault data, but dry holes and poor production remain possible on an individual parcel. The yield sample covers only 259 wells, and many records are for irrigation rather than household use. A buyer should review neighboring logs, confirm the proposed well location, and make the purchase contract contingent on the inspections and approvals that matter to the property.

Water quality deserves separate attention. The mapped area within about 10 miles contains 495 PFAS sampling or contamination sites and 1 EPA Superfund or cleanup site. There are 0 historic mine features in the mapped information, but that does not replace a current laboratory test. Check septic separation, drainage, floodplain or access issues, and the intended building footprint. A septic designer should confirm that the lot can support the proposed system before construction.

Well permits by decade near Ault

What a new well costs in Ault, CO

How this is built: the median permitted depth here times the per-foot range for this ground, plus the normal system costs. A lot at the 75th-percentile depth (57 ft) would run roughly $7,995–$15,135. See the full Colorado well cost guide.

Environmental sites mapped within about 10 miles

Counts come from EPA, USGS and state datasets layered on the Colorado Well Finder map. A count is not a verdict on any one well; it tells you what to test for.

Buying land near Ault? Know what it costs to build before you buy the dirt.

A listing photo can't tell you whether a lot is a dream or a money pit. Two parcels near Ault can carry the same asking price while one needs an $80,000 driveway and a $45,000 engineered septic the other doesn't. The well numbers on this page are the start of that answer. A Tri-Lakes Site Feasibility Report is the rest of it: a licensed general contractor, excavator and septic installer reads the parcel the way we would if we were about to build on it, and puts the real cost in writing before your money is committed.

Spend a little to know. Or gamble a lot to guess. Realtors sell the view and inspectors look at houses that already exist. We're the people who'd build it, so we catch what quietly turns a "great deal" into a budget disaster: bad access, buried rock, steep grade, soil that won't pass for a normal septic, water that's a fortune to reach. And if the lot is good, you've already got a builder ready to do the work, driveway to drywall.

• Instant Online Report, $99 — type the address and get a buildability read on the spot: parcel, terrain and slope, soil and septic outlook. Cheap enough to run on every lot you're shopping.
• Desktop Report, $500 — a contractor's from-the-desk feasibility read: Regulation 43 and county code, GIS parcel data, terrain, flood and drainage, soil and septic viability, setbacks and buildable envelope, nearby well depths from our 591,000-well database, the likely driveway route, and a preliminary site-development cost breakdown.
• On-Site Report, $2,000 — everything above, then boots and a drone on the actual ground: house pad and septic zone located, access and winter conditions checked, rock and soil observed in person, a 15 to 20 page written opinion you can hand a lender or seller. Credited toward your project if you build with us.

Under contract, comparing parcels, or a realtor with a rural listing whose buyers keep asking "what will it cost to build here?" This is the due-diligence step almost everyone skips, and the one that saves the most.

Common questions about wells in Ault

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All wells in Weld County — county-wide depth, yield and cost figures.

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