Skip to main content

Septic Services in Ann Arbor, MI

Washtenaw County · Pop. 119,980

Ann Arbor is home to the University of Michigan — one of the world's great research universities with nearly 50,000 students and a community of faculty, researchers, and technology company founders that has made the city one of the most educated and economically dynamic in the Midwest. The city itself is fully connected to municipal sanitary sewer and water systems, but the surrounding Washtenaw County townships — where much of the county's residential growth has occurred over the past three decades — have substantial development on individual septic systems. Michigan's county-by-county septic regulatory framework (unlike many states with unified statewide codes) means Washtenaw County has adopted its own rules within EGLE's Part 117 authority, and those rules reflect the county's specific glacial soil conditions. The dominant challenge is the same throughout Michigan's southern Lower Peninsula: glacial till soils with variable drainage, shallow or seasonally high water tables in lower landscape positions, and the frost depth of 24-36 inches that requires all service pipes to be buried deeper than in most of the country. The Huron River — which flows through Ann Arbor and is a state-designated Natural River — adds sensitive watershed protection requirements for properties in its drainage basin.

Services in Ann Arbor

🌿

Drain Field Repair

Restore or replace failed leach fields and drain lines to prevent sewage surfacing and groundwater contamination.

$2,000 – $15,000

🍳

Grease Trap Pumping

Commercial grease trap cleaning and pumping to prevent sewer blockages and maintain health code compliance.

$200 – $800

🔍

Septic Inspection

Comprehensive evaluation of your septic system's condition, required for real estate transactions in most states.

$300 – $600

🏗️

Septic System Installation

Complete new septic system design and installation, from perc testing to final inspection.

$3,500 – $20,000

🚽

Septic Tank Pumping

Regular pumping removes accumulated solids from your septic tank, preventing backups and extending system life.

$275 – $600

🔧

Septic Repair

Diagnose and fix septic system problems including leaks, clogs, baffle failures, and component replacements.

$500 – $5,000

💧

Well Drilling

Professional water well drilling for residential and commercial properties without access to municipal water.

$6,000 – $25,000

⚙️

Well Pump Repair

Diagnose and repair well pump failures, pressure tank issues, and water flow problems.

$300 – $3,000

Septic Providers in Ann Arbor (13)

Septic Service Costs in Ann Arbor

Service Average Cost
Septic Tank Pumping $285 - $510
Septic System Installation $7,000 - $22,000

Soil Conditions

Washtenaw County soils are glacial-origin Alfisols and Mollisols — Miami loam, Conover loam, and Brookston silty clay loam as dominant series across residential landscapes. Miami loam is a well-drained Alfisol with an argillic Bt horizon at 6-18 inches, clay content 25-35%, and moderate permeability in undisturbed profiles. Conover loam is the somewhat poorly drained equivalent of Miami — the same glacial till origin but with seasonal water tables at 18-30 inches. Brookston silty clay loam is poorly drained with seasonal water table at 0-12 inches. The Huron River valley and its tributaries carry Shoals and Ceresco loams — seasonally flooded Entisols. Lacustrine clay deposits in low-lying areas near former glacial lake basins have very slow permeability.

Washtenaw County's glacial till landscape produces Miami, Conover, and Brookston soil drainage sequences that are characteristic of the Great Lakes region. Miami loam — a well-drained Alfisol with Bt horizon at 6-18 inches and clay loam texture — is the benchmark soil for conventional system design in the county. Its moderate permeability and deep seasonal water table make it one of Michigan's better residential soils for conventional systems. Conover loam, the somewhat poorly drained counterpart, has redoximorphic features (gray with rust mottles) in the upper B horizon indicating seasonal saturation at 18-30 inches. Washtenaw County rules typically require a minimum 12-18 inches of separation between drain field bottom and seasonal high water table, which Conover soils can satisfy on appropriate landscape positions but barely. Brookston silty clay loam in depressions and drainage ways is essentially unsuitable for conventional systems.

Water Table: Miami loam uplands maintain water tables at 36-60 inches. Conover soils have seasonal highs at 18-30 inches. Brookston soils are saturated at 0-12 inches for significant portions of the year. Washtenaw County's variable glacial landscape creates sharp local transitions in water table depth.

Local Regulations

Washtenaw County Environmental Health administers septic permits under Michigan Part 117 of the Public Health Code with county-specific program rules. A soil evaluation and county construction permit are required. Washtenaw County requires 50-foot minimum setbacks from surface water and 50-100 feet from water supply wells depending on system type. The Huron River's Natural River designation adds buffer zone requirements for riparian properties. Michigan's Septage Waste Servicer Licensing Act (PA 247) governs pumpers. Installer licensing under PA 139 is required. Frost depth installation requirements for service pipes at 42+ inches below grade are standard in Washtenaw County to prevent freezing.

Washtenaw County Environmental Health (under Michigan Part 117 framework with county program authority) administers septic permits. Soil evaluation and a county-issued construction permit are required before installation. Ann Arbor is one of Michigan's most densely developed university cities — the city itself is fully sewered, but outlying Washtenaw County townships (Superior, Pittsfield, Augusta) have significant septic-dependent residential areas. Michigan's county-specific program means Washtenaw County has its own rules within EGLE's Part 117 framework. Frost depth of 24-36 inches requires deep service pipe installation.

Frequently Asked Questions — Ann Arbor

Does Ann Arbor itself have municipal sewer, or do city properties use septic?
The City of Ann Arbor is fully connected to Ann Arbor's municipal sanitary sewer system — there are essentially no individual septic systems within the city limits. Surrounding Washtenaw County townships, including portions of Pittsfield, Superior, York, Augusta, and Saline townships, have extensive residential development on individual septic systems. If you are looking at properties outside Ann Arbor city limits in the unincorporated county, many will be on septic.
How much does septic pumping cost in the Ann Arbor area?
Septic pumping in Washtenaw County typically runs $285 to $510. The University of Michigan metro area's higher labor costs push prices above Michigan's average. Standard 1,000-gallon residential tanks average $325-$450. Washtenaw County has multiple established contractors serving the township residential market. Michigan recommends pumping every 3-5 years; the county's clay-influenced glacial soils and cold winters make this interval appropriate.
What is the frost depth requirement for septic service pipes in Washtenaw County?
Michigan's frost depth in Washtenaw County is approximately 24-36 inches, with some winters driving frost deeper during extended cold snaps. Washtenaw County Environmental Health requires service pipes (from house to septic tank) to be installed at sufficient depth to prevent freezing, typically 42+ inches below grade for cold-climate service lines. If you are experiencing frozen pipes from house to tank in winter, the line may be installed too shallow and should be evaluated by a licensed installer.
How does the Huron River's Natural River designation affect septic permits near Ann Arbor?
Michigan's Natural Rivers Act provides enhanced protection for designated rivers, including the Huron River through Ann Arbor and the surrounding Huron River watershed. Properties within the Huron River Natural River corridor must comply with additional setback and development restrictions established in the Huron River Natural River Plan. For septic systems, this typically means larger setback requirements from the river and its banks than the standard county requirements. Washtenaw County Environmental Health can advise on specific setback requirements for any property address near the river.
Michigan has no statewide septic code — what does that mean for Washtenaw County buyers?
Michigan is one of only a few states without a unified statewide septic code. Each county administers its own septic program within the framework of Michigan's Part 117 of the Public Health Code. This means Washtenaw County's requirements — setbacks, soil testing procedures, system types allowed, inspection protocols — may differ from neighboring Livingston, Monroe, or Lenawee counties. Buyers moving from another state should not assume their prior experience with septic regulations applies. Washtenaw County Environmental Health is the authoritative source for county-specific rules.

Nearby Cities

Also serving these areas

Lansing, MIFlint, MI