Colorado Well Finder › Wells by county › Denver County › Four Square Mile
A shallow well record near Four Square Mile does not necessarily tell you what a household water supply will require. Monitoring accounts for 66% of permitted uses in this dataset, while domestic and household use accounts for 11%. That distinction matters before you use the local depth median to budget a new well.
These figures cover permitted wells within 5 miles of Four Square Mile, not just wells inside the neighborhood. They provide useful context around Holly Hills, Glendale and Cherry Hills Village, but the right comparison is a nearby well with the same purpose and aquifer as your proposed supply.
Figures are computed from Colorado Division of Water Resources permit records for permitted wells within 5 miles of Four Square Mile. Not every permit reports every field; each statistic uses the wells that report it.
| Depth statistic | Feet |
|---|---|
| 25th percentile | 20 |
| Median | 27 |
| 75th percentile | 50 |
| 90th percentile | 250 |
| Deepest on record | 2,265 |
| Aquifer named on permits | Wells |
|---|---|
| unnamed / fractured-bedrock aquifer | 5,604 |
| Alluvial | 397 |
| Denver | 186 |
| Yield statistic | gpm |
|---|---|
| 25th percentile | 10.0 |
| Median | 15.0 |
| 75th percentile | 99.0 |
| Median depth to water | 14 ft |
| Median water level by decade | Depth to water |
|---|---|
| 2010s | 16 ft |
| 2020s | 14 ft |
Among the 4,021 records reporting depth, the median is 27 feet and the middle half runs 20–50 feet. Wells under 100 feet account for 87% of the depth mix. Those figures describe a predominantly shallow record set, not a dependable target depth for a new household well.
The deeper end is substantial: the 90th percentile is 250 feet, and the deepest recorded well reaches 2,265 feet. Permits name Alluvial and Denver aquifers, while many leave the aquifer unnamed or use a fractured-bedrock category. Ask a driller to identify the intended water-bearing formation and suitable nearby supply wells. A bid based only on the neighborhood median could describe the wrong kind of hole.
Only 148 wells report a pump yield, compared with 7,062 total permit records. Their median is 15.0 gpm, with a middle half of 10.0–99.0 gpm. That broad spread, combined with the mix of well uses, makes the median a reference point rather than a promise for your lot.
At the low end, 4% report under 1 gpm and 9% fall in the 1–5 gpm band. A buyer considering a low-yield well should budget for evaluation of recovery, storage and household demand before closing. Obtain the actual pumping-test information and confirm what the permit authorizes. A reported pumping rate does not establish sustainable production or permission to irrigate a yard.
The 153 records with static water levels have a median depth to water of 14 feet below ground; the middle half is 11–19 feet. Static level measures where water stands in an idle well. It is not the total drilled depth, and it does not tell you how far the level drops while pumping.
Decade medians change from 16 feet in the 2010s to 14 feet in the 2020s. That does not show a dropping water table: the later median is shallower. It also does not prove aquifer recovery, because these summaries may represent different wells and aquifers. For a purchase, repeated measurements from the subject well are more useful than this area-wide comparison.
Permit issuance was highest in the supplied decade totals during the 2000s, with 1,840 permits, following 1,809 in the 1990s. The records show 902 in the 2010s and 477 in the 2020s, with the newest permit dated 2025. The latest decade is incomplete, so avoid treating that comparison as a direct measure of declining activity.
Of 7,062 permits, 3,248 are recorded as constructed. The most frequent listed driller entry is “Authorized (Pe, Pg)” at 2,939; that is not a conventional company name. Ground Exploration Llc (Bender, Joseph T.) appears on 291 records and Hier Drilling Co Inc (Hier, Bruce A.) on 103. Given the monitoring-heavy use mix, record frequency alone does not establish household-well experience or current availability.
The supplied model uses Denver Basin sedimentary bedrock and a drilling rate of $50–$70 per foot. At the 27-foot median depth, it estimates about $1,400–$1,900 for the drilled hole and $7,400–$13,900 for a finished well with pump, tank, trenching and electrical.
Treat that as a shallow-depth illustration, not a household-well quote for Four Square Mile. The monitoring-heavy records can make the median a poor match for a domestic supply. Ask for a written scope tied to the permitted aquifer and proposed depth, with casing, grout, pump selection, testing and site access clearly addressed. Also ask how the contractor handles additional depth or an unsuccessful hole before authorizing work.
Within about 10 miles, the mapped inventory includes 631 PFAS sampling or contamination sites and 170 EPA Superfund or cleanup sites. These are screening flags, not proof that a particular well is contaminated. A PFAS sampling location does not necessarily mean contamination was detected, and nearby cleanup activity does not establish a connection to your aquifer.
Review site details and have a qualified laboratory test the subject well for drinking-water suitability, including contaminants indicated by local conditions. Inspect the cap, casing and surface drainage as well. Where septic is proposed, confirm local approval, setbacks and soil suitability before fixing the house location. Low yield and an unsuccessful bore remain separate risks that environmental screening cannot resolve.
Start with the parcel's actual water-service options and Colorado DWR permit status, not the nearest dot on the map. Around Four Square Mile, Holly Hills and Glendale, a nearby monitoring well is not evidence that your parcel can obtain a household well. Confirm the allowed uses, aquifer and whether the existing permit matches the constructed well.
For an existing supply, request the completion report, pumping information, water-quality results and maintenance history. For a build, compare neighboring domestic wells and get a site-specific drilling proposal before finalizing the budget. Coordinate rig access, driveway grading, utility trenches and any septic area with the building plan. Resolve water availability and authorization before committing to a layout that depends on them.
| Decade permitted | Wells |
|---|---|
| 1950s | 152 |
| 1960s | 101 |
| 1970s | 178 |
| 1980s | 222 |
| 1990s | 1,809 |
| 2000s | 1,840 |
| 2010s | 902 |
| 2020s | 477 |
| Most active drillers on record | Wells |
|---|---|
| Authorized (Pe, Pg) | 2,939 |
| Ground Exploration Llc (Bender, Joseph T.) | 291 |
| Hier Drilling Co Inc (Hier, Bruce A.) | 103 |
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 (50 ft) would run roughly $8,500–$15,500. See the full Colorado well cost guide.
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.
The numbers above are the area average. Your lot is one point on the map. Search the address to see the real depth, yield and aquifer of each permitted well around it.
Map wells near Four Square MileFor a Four Square Mile lot, Tri-Lakes Contracting is a licensed Colorado contractor for access driveways, site development, new-build septic systems and custom homes. Coordinate that site work with the parcel's confirmed water supply and local approval requirements.
Licensed Colorado custom home builder · licensed driveway & excavation contractor · licensed septic installer
A listing photo can't tell you whether a lot is a dream or a money pit. Two parcels near Four Square Mile 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.
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.
Driveway, site work, septic or a build near Four Square Mile. Licensed GC, excavator and septic installer.
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Within 5 miles of Four Square Mile, reported well depths have a 27-foot median and a middle half of 20–50 feet. However, monitoring accounts for 66% of permitted uses, so these shallow figures are not a reliable household-well target. Compare nearby domestic wells in the intended aquifer before accepting a proposed drilling depth.
The supplied model uses $50–$70 per foot. At the area's 27-foot median depth, the drilled hole is about $1,400–$1,900, and a finished well with pump, tank, trenching and electrical is about $7,400–$13,900. Because monitoring wells dominate the records, a domestic well may require a different depth and scope. Get a parcel-specific quote.
The 148 records reporting pump yield have a median of 15.0 gpm and a middle half of 10.0–99.0 gpm. At the low end, 4% report under 1 gpm. Those figures cover mixed well uses, not just homes. Have the subject well's sustained production and recovery evaluated rather than relying on the area median.
The supplied records cannot establish whether an individual well is safe. The nearby environmental inventory includes 631 PFAS sampling or contamination sites and 170 EPA Superfund or cleanup sites within about 10 miles. Those counts warrant investigation, not an assumption of contamination. Review relevant site records and obtain laboratory testing from the well you intend to use.
The available decade medians do not show a decline: depth to water was 16 feet in the 2010s and 14 feet in the 2020s, meaning the later median was shallower. However, only 153 records report static levels, and the decades may include different wells. Repeated measurements from the same well are needed to assess its trend.
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