What Twin Lakes Well Records Mean for Your Property

How deep are wells around Twin Lakes?

How much water do wells make near Twin Lakes?

Why Twin Lakes Records Skew Toward Shallow Wells

Among the 6,242 records reporting depth, the median is 29 feet, and the middle half falls between 20 and 40 feet. That is a compact range for the recorded population, but the heavy monitoring-well share makes it a poor stand-alone specification for a new household well.

Alluvial and Quaternary Alluvium aquifers appear in the records, alongside many unnamed entries. The cost model assumes Denver Basin sedimentary bedrock. A driller needs to identify the intended water-bearing formation rather than price solely from nearby shallow holes. Although 90% of recorded depths are under 100 feet, the deepest record reaches 1,751 feet. Confirm the purpose and aquifer of comparable wells before accepting a depth allowance.

Reported Yield Is Useful, but Household Performance Needs Testing

Only 229 records report a pump yield. Within that subset, the median is 17.0 gpm, with the middle half between 10.0 and 60.0 gpm. Those figures suggest useful production in many tested wells, but they do not establish what an untested Twin Lakes lot will produce.

The low end deserves attention: 5% report less than 1 gpm. For a buyer, that means a favorable neighborhood median cannot replace a sustained pumping test. Ask for the test duration, drawdown and recovery information, along with the installed pump details. A reported yield is neither a guarantee of continuous supply nor permission to pump that amount; allowed use comes from the DWR permit.

Shallow Water Near Twin Lakes Does Not Show a Falling Trend

The 254 records with static water levels show water at a median 10 feet below ground, with the middle half between 7 and 20 feet. Static level is where water stands when the well is not pumping. It is not the total drilled depth or the amount of usable water available under demand.

Decade medians are 24 feet below ground in the 1960s, 11 feet in the 2010s and 8 feet in the 2020s. These figures do not show a dropping water table; later measurements are shallower. However, they represent different records, not necessarily repeated measurements of the same wells. Have current groundwater conditions checked before planning a basement, excavation or septic system.

A Busy Permit History, Much of It Monitoring Work

Permit activity around Twin Lakes rose from 457 records in the 1980s to 1,947 in the 1990s. The 2010s account for 2,708 permits, compared with 1,034 in the 2020s through the newest recorded permit year, 2025. That recent decade is incomplete, so the totals should not be treated as a straightforward slowdown.

The most active listed entry is Authorized (Pe, Pg), with 3,712 records; its label should not be mistaken for a conventional drilling-company name. Named drillers include Layne, Christensen Co. (Tormoehlen, David A.), with 202, and Ground Exploration Llc (Bender, Joseph T.), with 161. Given the monitoring-heavy use mix, this history is not a count of new residential water supplies.

Budgeting a Twin Lakes Well Beyond the Drilled Hole

The supplied model uses $50–$70 per foot for Denver Basin sedimentary bedrock. At the recorded median depth, that puts the drilled hole at about $1,400–$2,000. A finished well with pump, tank, trenching and electrical is modeled at about $7,400–$14,000.

Treat those amounts as an initial comparison, not a property-specific quote. The 29-foot median comes from a population dominated by monitoring wells, and your permitted household supply may require a different depth and design. Ask the contractor to separate drilling, casing, grout, pump equipment and site connections in the proposal. Also clarify how unexpected depth, difficult access and any needed water treatment would be handled before work starts.

Water Quality and Shallow Groundwater Need Separate Checks

Within about 10 miles, the mapping identifies 690 PFAS sampling/contamination sites and 184 EPA Superfund/cleanup sites. These are reasons to investigate, not proof that a particular Twin Lakes well is contaminated. A PFAS sampling location does not by itself establish contamination at that location or on your parcel.

Review nearby site records and arrange laboratory testing appropriate to the property's surroundings, including discussion of PFAS, bacteria and nitrate testing. Inspect casing, the well cap and surface drainage as well. A shallow water level can complicate septic siting and excavation, while a shallow drilled depth does not guarantee adequate yield. Confirm the wastewater arrangement and coordinate well protection, septic suitability and building plans before committing to the layout.

Before Buying a Lot Between Sherrelwood and Welby

Start with the parcel's DWR permit, not the regional median. Confirm that the authorized uses match your plans for the home, landscaping and any animals. Do not assume a monitoring permit or an existing hole can be used as a household supply. New withdrawals may require augmentation where applicable; resolve the water-supply pathway before designing the house.

Then compare nearby wells in Sherrelwood, North Washington or Welby by use, aquifer, construction and tested yield—not proximity alone. For an existing well, obtain construction records, a current pumping evaluation and laboratory results. For a vacant lot, have drilling access, utility routing, wastewater service and the building footprint reviewed together so the water plan actually fits the site.

Well permits by decade near Twin Lakes

What a new well costs in Twin Lakes, 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 (40 ft) would run roughly $8,000–$14,800. 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 Twin Lakes? 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 Twin Lakes 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 Twin Lakes

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

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