What Nunn, Colorado Wells Are Really Like

How deep are wells around Nunn?

How much water do wells make near Nunn?

Nunn wells commonly reach the deeper plains sediments

The median reported well depth near Nunn is 360 feet. The middle half runs from 200 to 480 feet, so a driller bidding a new well should not assume a shallow hole just because the property is on open plains. The 90th-percentile depth is 660 feet, and the deepest record reaches 900 feet.

Nearly half of the wells, 49%, fall between 300 and 600 feet. Another 16% are 600 feet or deeper, while 20% are under 100 feet and 15% are between 100 and 300 feet. Most named permits use an unnamed or fractured-bedrock aquifer, with some in the Laramie Fox Hills and Quaternary Alluvium. Local geology can change quickly from one parcel to the next.

Most Nunn wells make a usable household supply

Among the wells reporting pump yield, the median is 10.0 gallons per minute. The middle half produces 9.0 to 14.0 gallons per minute, and 78% report between 5 and 15 gallons per minute. That is a stronger production pattern than a buyer sees in many uncertain bedrock settings, but it is still not a guarantee for an untested parcel.

Another 21% report more than 15 gallons per minute. Only 1% fall between 1 and 5 gallons per minute, and 0% are reported under 1 gallon per minute. The records are dominated by domestic or household permits, with stock use also common. Ask for the well completion report, pump test, storage setup, and permitted use before relying on a neighbor's yield.

The reported Nunn water level is holding steady

Reported static water levels have a median depth of 100 feet below the surface. The middle half ranges from 49 to 144 feet. That range matters when pricing a pump, because pumping equipment and electrical requirements depend partly on the lift from the water level to the pressure system.

The decade comparison does not show a measurable change in the median: the 2010s median is 100 feet and the 2020s median is also 100 feet. That is not proof that every well has a stable water level. It is a broad permit-record signal, and individual wells can respond differently to pumping, recharge, construction, and local geology. A current static measurement is more useful for a specific property.

Nunn has a long permit history and several repeat drillers

Permit activity is established in the Nunn area. The records show 6 permits in the 1950s, 14 in the 1960s, 33 in the 1970s, 36 in the 1980s, 76 in the 1990s, 220 in the 2000s, 154 in the 2010s, and 191 in the 2020s. The newest permit year is 2025. There are 811 wells in the mapped record, although only 522 are recorded as constructed.

The most active names are Crandall Drilling & Pump Service, including Crandall Jr. and Howard H., with 188 records; Ingram Drilling Inc., including Ingram and Stephen E., with 96; and Lesh Drilling Inc., including Lesh Jr. and Ed, with 59. Those records identify local experience, not a guarantee of current availability or price.

Budget roughly $18,600 to $31,800 for a finished median-depth well

For Nunn's alluvium and plains sedimentary rock, the drilling model uses a typical rate of $35 to $55 per foot. At the 360-foot median depth, the drilled hole works out to about $12,600 to $19,800. That is only the hole, not the complete water system.

A finished well with pump, pressure tank, trenching, and electrical is modeled at about $18,600 to $31,800 at that same median depth. A shallow or productive site may cost less, while a deeper hole, difficult access, casing and grout requirements, or a difficult pump installation can raise the bid. Request an itemized proposal that separates drilling, casing, grouting, testing, pump equipment, trenching, electrical work, and permit-related work.

Check water quality, septic setbacks, and building feasibility

Low yield is not the main warning signal in these records, but a good area statistic cannot rule out a poor individual well or a dry hole. Fractured-bedrock production is especially variable, and an unnamed aquifer label does not replace a site-specific evaluation. Confirm casing, grout, well construction, pump performance, and laboratory water testing.

Environmental screening also deserves attention. The mapped area within about 10 miles includes 33 PFAS sampling or contamination sites and 2 EPA Superfund or cleanup sites. There are 0 historic mine features in that area. These locations do not automatically make a parcel unsafe, but they justify checking the parcel's history, groundwater direction, and test results. Septic soil conditions, replacement-area requirements, driveway access, and the building envelope should be reviewed together with the well location.

Compare the lot's neighbors before you commit

Start with the Colorado DWR permit file for the parcel and nearby wells, then compare reported depths, yields, static water levels, aquifer descriptions, and permitted uses. Neighboring records in Pierce, Carr, Ault, Wellington, Eaton, and Severance can provide broader context, but the closest wells are usually the most useful comparison.

For an existing home, ask for the well permit, construction report, recent production information, water test, pump age, and records of repairs. For vacant land, obtain a drilling estimate based on the proposed well location and access route rather than relying only on the area median. Also confirm that the intended household, stock, irrigation, or other use is allowed. If the basin is over-appropriated, an augmentation plan may be necessary for some uses. Have the well, septic system, driveway, and house site reviewed as one project.

Well permits by decade near Nunn

What a new well costs in Nunn, 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 (480 ft) would run roughly $22,800–$38,400. 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 Nunn? 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 Nunn 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 Nunn

Keep researching

More in Weld County

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

Nearby areas