Colorado Well Finder › Wells by county › Boulder County › Pine Brook Hill
Buying land in Pine Brook Hill means looking closely at the well, not just the house or access road. Records within five miles show a 125-foot median well depth, but the middle half ranges from 25 to 325 feet. That wide spread reflects mountain bedrock and changing site conditions.
Reported well yields are generally workable, with a 7.0 gallons-per-minute median. Most permitted wells are domestic or household wells, and most permits name an unnamed or fractured-bedrock aquifer. These records are useful for planning, but they do not guarantee what a new well will produce on a particular lot.
Figures are computed from Colorado Division of Water Resources permit records for permitted wells within 5 miles of Pine Brook Hill. Not every permit reports every field; each statistic uses the wells that report it.
| Depth statistic | Feet |
|---|---|
| 25th percentile | 25 |
| Median | 125 |
| 75th percentile | 325 |
| 90th percentile | 525 |
| Deepest on record | 4,550 |
| Aquifer named on permits | Wells |
|---|---|
| unnamed / fractured-bedrock aquifer | 5,278 |
| Alluvial | 108 |
| Quaternary Alluvium | 52 |
| Yield statistic | gpm |
|---|---|
| 25th percentile | 5.0 |
| Median | 7.0 |
| 75th percentile | 10.0 |
| Median depth to water | 26 ft |
| Median water level by decade | Depth to water |
|---|---|
| 1960s | 31 ft |
| 1970s | 41 ft |
| 1980s | 60 ft |
| 2000s | 6 ft |
| 2010s | 73 ft |
| 2020s | 12 ft |
The local depth numbers cover a broad range. The median is 125 feet, while the middle half of reported wells falls between 25 and 325 feet. A well at the 90th percentile reaches 525 feet, and the deepest record is 4,550 feet. Nearly half of the wells are under 100 feet, while 22% are between 100 and 300 feet, 23% between 300 and 600 feet, and 8% exceed 600 feet.
For a driller's bid, the median is only a starting point. Pine Brook Hill is mountain terrain dominated by fractured granite and gneiss. A nearby shallow success does not prove that the same fracture system continues beneath your lot. Budgeting should allow for a site-specific depth decision, proper casing and grout, and the possibility that drilling goes substantially deeper than the local median.
Among wells with reported pump yields, the median is 7.0 gallons per minute and the middle half is 5.0 to 10.0 gallons per minute. The yield mix is encouraging for many household uses: 69% report between 5 and 15 gallons per minute, 11% report more than 15 gallons per minute, 18% report between 1 and 5 gallons per minute, and 2% report under 1 gallon per minute.
That low-yield share is small, but it matters when evaluating a home or building lot. A yield test is more useful than a neighbor's verbal estimate. Ask for the well construction report, pump test information, storage capacity, and any history of seasonal shortage. A well producing steadily at a modest rate can work with storage and careful household demand, while a high-flow result is not a substitute for water-quality testing.
Reported static water levels have a 26-foot median, with the middle half from 9 to 95 feet below ground surface. The decade medians vary sharply: 31 feet in the 1960s, 41 feet in the 1970s, 60 feet in the 1980s, 6 feet in the 2000s, 73 feet in the 2010s, and 12 feet in the 2020s.
This series does not show a dependable one-direction decline. The measurements move both shallower and deeper across decades, and only 152 wells report a static water level. Treat the numbers as local reference points rather than a complete groundwater trend. For a purchase, compare the subject well's measured water level with its pump setting, recent production history, and nearby wells at similar elevation.
The records include 5,858 permitted wells, with 3,648 recorded as constructed. Permits span several generations: the largest decade was the 1990s with 1,008 permits, followed by 909 in the 1970s and 630 in the 1980s. There were 303 permits in the 2020s, and the newest permit year is 2025.
The most active names in these records are Authorized (Pe, Pg) with 801 wells, Ground Water Systems Inc (Wilson, Richard R.) with 761, and Norris & Sons (Norris, T A) with 231. These counts describe permit records, not a recommendation or a guarantee of current availability. The use mix is mainly domestic or household at 63%, with monitoring wells at 23%, stock at 2%, and irrigation at 1%.
In fractured mountain bedrock such as granite and gneiss, the drilling rate is typically $65 to $100 per foot. At the local median depth of 125 feet, the drilled hole works out to about $8,100 to $12,500. That is not the complete water-system price.
A finished well with pump, pressure tank, trenching, and electrical is estimated at $14,100 to $24,500 at the median depth. The final bid can change with access, casing and grout requirements, terrain, power distance, water testing, and actual depth. Ask the contractor to separate drilling from the pump system and site work. That makes it easier to compare bids and see which costs increase if the hole must go deeper.
Low yield and dry holes are the main physical uncertainties in fractured bedrock. The records show 2% of reported yields under 1 gallon per minute, but the database covers only 896 wells with a reported pump yield. Missing information is not proof of either success or failure. Require the actual well report and a current flow or recovery test when possible.
Water quality also deserves a site-specific review. Within about ten miles are 103 PFAS sampling or contamination sites, 652 historic mine features, and 67 EPA Superfund or cleanup sites. These mapped locations do not establish contamination in a particular well, but they support testing for relevant contaminants. Before construction, verify septic setbacks, available drainfield area, well access for a rig, and the county and Colorado DWR requirements for the intended use.
| Decade permitted | Wells |
|---|---|
| 1950s | 159 |
| 1960s | 263 |
| 1970s | 909 |
| 1980s | 630 |
| 1990s | 1,008 |
| 2000s | 594 |
| 2010s | 425 |
| 2020s | 303 |
| Most active drillers on record | Wells |
|---|---|
| Authorized (Pe, Pg) | 801 |
| Ground Water Systems Inc (Wilson, Richard R.) | 761 |
| Norris & Sons (Norris, T A) | 231 |
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 (325 ft) would run roughly $27,125–$44,500. 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 Pine Brook HillTri-Lakes Contracting is a licensed Colorado contractor serving Pine Brook Hill and nearby mountain communities with access driveways, site development, new-build septic systems, and custom homes. Bring the well, septic, access, and building pieces together early so the lot can be evaluated as one project.
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A listing photo can't tell you whether a lot is a dream or a money pit. Two parcels near Pine Brook Hill 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 Pine Brook Hill. Licensed GC, excavator and septic installer.
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The median reported depth within five miles of Pine Brook Hill is 125 feet. The middle half ranges from 25 to 325 feet, while the 90th percentile is 525 feet. Nearly half are under 100 feet, but fractured granite and gneiss can produce much deeper wells, so nearby depth records should guide planning rather than set a guaranteed drilling depth.
The local drilling model uses $65 to $100 per foot in fractured mountain bedrock. At the 125-foot median depth, the drilled hole is about $8,100 to $12,500. A finished well with pump, tank, trenching, and electrical is about $14,100 to $24,500. Access, casing, grout, power distance, and final depth can change the bid.
Reported pump yields have a 7.0-gallon-per-minute median, with the middle half from 5.0 to 10.0 gallons per minute. About 69% report between 5 and 15 gallons per minute. A small share, 2%, reports under 1 gallon per minute. Ask for a pump test and recovery history because only 896 wells report a yield.
The permit records do not prove that any individual well is safe to drink. Within about ten miles are 103 PFAS sampling or contamination sites, 652 historic mine features, and 67 EPA Superfund or cleanup sites. Test the well water for contaminants relevant to the property and its surroundings, and repeat testing when conditions or ownership change.
The available decade data does not show a simple, continuous decline. Median static water depth was 31 feet in the 1960s, 60 feet in the 1980s, 6 feet in the 2000s, 73 feet in the 2010s, and 12 feet in the 2020s. Only 152 wells report static levels, so use the subject well's recent measurements for a better comparison.
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