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Well Water Testing in Cheyenne, WY

Laramie County County · 0 providers · Avg. $50 - $500

About Well Water Testing in Cheyenne

Well water testing analyzes your private well water for contaminants including bacteria, nitrates, heavy metals, pH levels, and other substances that can affect health and taste. The EPA does not regulate private wells — the responsibility falls entirely on the homeowner. An estimated 23% of private wells have at least one contaminant exceeding health-based standards according to the USGS. Annual testing is recommended at minimum, with additional testing after flooding, nearby land use changes, or if you notice changes in taste, color, or odor. Basic tests cover coliform bacteria and nitrates — the two most common and dangerous contaminants in well water. Comprehensive panels add testing for lead, arsenic, manganese, iron, hardness, pH, total dissolved solids, volatile organic compounds, and pesticides depending on your region and local geology. Results typically take 5-14 business days from a certified laboratory. If contaminants are found, treatment options range from simple point-of-use filters to whole-house treatment systems depending on what is detected and at what concentration.

What Cheyenne Homeowners Should Know

Local Soil Conditions: Featherlegs loam and Altvan loam on the High Plains surface — Aridic Argiustolls and Typic Haplustalfs with moderate percolation; Nunn clay loam in lower positions with slower drainage; Larim gravelly sandy loam on upland ridges with excellent percolation; Bentonite-bearing Pierre Shale formations create localized expansive clay hazards

Water Table: 20 to 50 feet in most areas; deeper in the High Plains; shallower near Crow Creek and Dry Creek drainages

Climate Impact: Semi-arid steppe (BSk) at 6,062 feet elevation. One of the windiest cities in the U.S., with average wind speeds of 12-14 mph. Cold winters with frequent blizzards; mild summers. Annual precipitation 15 inches. High elevation accelerates UV degradation of exposed plastic components.

Signs You Need Well Water Testing

  • Annual testing is overdue — all private wells should be tested at least yearly
  • Water has a new or unusual taste, odor, or color
  • Recent flooding or heavy rainfall near the well
  • Nearby construction, agriculture, or land use changes
  • Household members experiencing unexplained gastrointestinal illness
  • Buying or selling a property with a private well

The Well Water Testing Process

  1. 1 Contact a certified water testing laboratory or local health department for test kits
  2. 2 Collect water samples following the lab's instructions for each test type
  3. 3 Submit samples to the lab within the required holding time (usually 24-48 hours)
  4. 4 Lab analyzes samples and compares results to EPA health-based standards
  5. 5 Receive a detailed report showing contaminant levels and whether they exceed guidelines
  6. 6 If issues are found, consult with a water treatment professional for remediation options

No Well Water Testing providers listed yet in Cheyenne

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Frequently Asked Questions — Cheyenne

What parts of the Cheyenne area are on septic systems?
Cheyenne city limits are largely served by municipal sewer. Rural residential areas throughout Laramie County — including ranch lots along I-25, Fox Farm, Carpenter, and Burns communities — are on private septic systems. Many acreage developments within 10 miles of the city also use septic. Contact Laramie County Planning to verify sewer availability for any specific address.
What is Bentonite and why does it matter for septic systems in Cheyenne?
Bentonite is a highly expansive clay mineral derived from weathered volcanic ash, found in Wyoming's Pierre Shale formations. When wet, Bentonite swells dramatically — sometimes to 15 times its dry volume. This creates structural damage to rigid septic tanks and pipe connections, and essentially zero percolation for leach fields. If a soil evaluation finds Bentonite-bearing materials, an engineered alternative system (mound, drip irrigation) must be designed to avoid the restrictive zone.
How does Cheyenne's wind affect septic systems?
Cheyenne's persistent high winds (averaging 12-14 mph) benefit evapotranspiration-based systems by increasing surface moisture loss, but they also accelerate UV degradation of exposed plastic components like risers and distribution boxes. All above-grade components should be UV-resistant. Wind-driven soil erosion can also expose leach field piping if proper revegetation is not established after installation.
Are there septic restrictions near Cheyenne's Granite Reservoir?
Granite Reservoir is a primary drinking water source for Cheyenne. WDEQ and Laramie County require enhanced setbacks and advanced treatment for any septic systems within the reservoir's contributing watershed. New systems are rarely approved in this area, and existing systems near the reservoir face increasing pressure to upgrade or connect to an extended sewer line.
What does a WDEQ Chapter 25 site evaluation involve?
A Wyoming Chapter 25 site evaluation includes a detailed soil profile description to a minimum depth of 5 feet using a backhoe pit, a percolation test in the design leach field area, measurement of seasonal high water table, and documentation of any restrictive layers. The evaluation must be performed by a WDEQ Registered Site Evaluator or Professional Engineer. Results determine the system type, size, and setback requirements.

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