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Drain Field Repair in Cheyenne, WY

Laramie County County · 0 providers · Avg. $2,000 - $15,000

About Drain Field Repair in Cheyenne

The drain field (also called a leach field or absorption field) is where your septic system's real work happens — liquid effluent percolates through gravel and soil, where bacteria break down remaining contaminants before the water reaches the groundwater table. When a drain field fails, untreated sewage can surface in your yard, contaminate nearby wells, and create a serious health hazard. Drain field failures happen for several reasons: biomat buildup (a thick bacterial layer that clogs the soil), root intrusion from nearby trees, vehicle traffic compacting the soil above the field, or simply reaching the end of the field's natural lifespan (typically 15-25 years). Repair options range from less invasive approaches — jetting distribution pipes, adding bacterial supplements, or installing a curtain drain to lower the water table — to full drain field replacement, which involves excavating the old field and installing new distribution trenches in virgin soil. Some states allow advanced remediation techniques like fracturing (injecting air into the soil to restore percolation) or adding a supplemental treatment unit upstream. Costs vary widely based on the repair method, field size, and local soil conditions.

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 Drain Field Repair

  • Standing water or soggy soil over the drain field area
  • Strong sewage odors near the drain field
  • Unusually green or lush grass in strips over the drain lines
  • Slow drains throughout the house that persist after tank pumping
  • Sewage surfacing at the ground level
  • Failed septic inspection identifying drain field issues

The Drain Field Repair Process

  1. 1 Diagnose the failure type through inspection, probing, and camera work
  2. 2 Evaluate repair vs. replacement based on field age and failure severity
  3. 3 If repairable: jet distribution pipes, treat with bacteria, or install drainage
  4. 4 If replacement needed: design a new field based on current perc test data
  5. 5 Excavate the failed field and install new distribution trenches
  6. 6 Connect to existing tank and distribution box, backfill and grade

No Drain Field Repair 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.

Other Services in Cheyenne

🍳Grease Trap Pumping🔍Septic Inspection🏗️Septic System Installation🚽Septic Tank Pumping🔧Septic Repair💧Well Drilling⚙️Well Pump Repair🔬Well Water Testing💦Well Water Treatment

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