Septic Systems in Anne Arundel County, MD

Regulations, costs, soil data & local providers

Pop. 588,261 ~5.4% on septic ~12,706 septic homes Well drained soil

Septic pumping in Anne Arundel County, Maryland costs $400-$750 (avg $550). A new septic system installation costs $7,750-$15,450. USDA soil data rates 0% of county soils as suitable for septic absorption fields. Approximately 12,706 homes in this county use septic systems.

Septic System Costs in Anne Arundel County

ServiceLowAverageHigh
Pumping / Cleaning$400$550$750
Routine Inspection$300$400$550
Real Estate Inspection$500$750$1050
Minor Repair$1,000$1,400$6,800
Conventional Installation$7,750$11,050$15,450
Aerobic System Installation$14,500$20,700$29,000
Drainfield Replacement$7,750$11,050$15,450
Perc Test$1,150$1,650$2,300

Cost estimates based on regional market data for Anne Arundel County, Maryland. Actual costs depend on system type, site conditions, and provider.

Soil & Septic Suitability in Anne Arundel County

Drainage Class
Well drained
Hydrologic Group
C
Unique Soil Types
82

Dominant Soil Types

Soil SeriesCoverageDrainageHydro Group
Annapolis 1005 Well drained C
Udorthents 785 Well drained C
Dodon 675 Moderately well drained C
Sassafras 615 Well drained B
Mattapex 589 Moderately well drained C

Septic Tank Absorption Field Suitability

USDA NRCS rates soil suitability for septic absorption fields across this county:

Not Limited (Good)0%
Somewhat Limited2.5%
Very Limited97.5%

Overall rating: Very limited

Source: USDA NRCS Soil Survey Geographic Database (SSURGO)

Groundwater & Water Table in Anne Arundel County

Monitoring Wells
131
Avg Depth to Water
93.9 ft
Median Depth
85.4 ft
Shallowest Recorded
-5.9 ft Shallow Risk

Water table depths in this county are generally favorable for conventional septic systems.

Source: USGS National Water Information System. Based on 2057 measurements from monitoring wells.

Septic Regulations & Permits in Anne Arundel County

State Regulatory Body
Maryland Department of the Environment
Inspection Required for Home Sale
Yes
Nitrogen Reduction Areas
Yes
Advanced Treatment Required
In designated areas

Bay Restoration Fund. BAT (Best Available Technology) required in Critical Areas.

Contact the Anne Arundel County health department for current permit requirements, fees, and approved system types.

Septic System FAQ for Anne Arundel County

How much does septic pumping cost in Anne Arundel County?
Septic pumping in Anne Arundel County, Maryland typically costs between $400 and $750, with an average of $550. Costs vary by tank size (1,000-1,500 gallons is typical), ease of access, distance from the pumping company, and how full the tank is. Most homeowners should pump their tank every 3-5 years.
How much does a new septic system cost in Anne Arundel County?
A conventional septic system installation in Anne Arundel County typically costs $7,750-$15,450. An aerobic treatment unit (ATU) costs $14,500-$29,000. Given the predominantly well drained soils in this area, some sites may require alternative system types. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in Anne Arundel County?
Yes. Virtually all counties in Maryland require a permit before installing, repairing, or replacing a septic system. The permit process typically involves a soil evaluation or percolation test, system design by a licensed professional, application to the county health department, and one or more inspections during installation. Contact the Anne Arundel County health department for current requirements and fees.
What soil types are in Anne Arundel County and how do they affect septic systems?
Anne Arundel County has predominantly Annapolis, Udorthents, Dodon soils. The dominant drainage class is Well drained with hydrologic group C. The USDA rates 0% of surveyed soils as "Not Limited" for septic absorption fields, 2.5% as "Somewhat Limited", and 97.5% as "Very Limited".
Is a septic inspection required when selling a home in Anne Arundel County?
Yes. Maryland requires a septic system inspection as part of the property transfer process. This typically involves a certified inspector evaluating the tank, drainfield, and all system components. The inspection cost in this area averages $750. If the system fails inspection, repairs or replacement may be required before the sale can proceed.
How often should I pump my septic tank in Anne Arundel County?
The EPA recommends pumping your septic tank every 3-5 years for a typical household. The exact frequency depends on tank size, household size, and water usage. A 1,000-gallon tank serving a family of 4 should generally be pumped every 3 years. With approximately 12,706 septic systems in Anne Arundel County, there are many local providers offering regular pumping services.
Can I install a conventional septic system in Anne Arundel County?
It depends on your specific site. USDA soil data shows that 97.5% of soils in Anne Arundel County are rated "Very Limited" for septic absorption fields, while only 0% are "Not Limited." This means many properties will require alternative systems such as mound systems, pressure distribution systems, or aerobic treatment units. A percolation test ($1150-$2300) and soil evaluation are required before the county will approve a system design.
How long does a septic system last in Anne Arundel County?
A well-maintained septic system in Anne Arundel County typically lasts 25-30 years, though some components may need attention sooner. The concrete septic tank itself can last 40+ years, while the drainfield — the most critical and expensive component — usually lasts 15-25 years depending on soil conditions (Anne Arundel County has predominantly well drained soils). Regular pumping every 3-5 years and avoiding excess water usage are the two most effective ways to extend system life.

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Quick Facts

Population588,261
Est. Septic Homes12,706
Avg Pumping Cost$550
Drainage ClassWell drained
Septic SuitabilityVery limited

Common Septic Services

Pumping: $400-$750
Inspection: $300-$550
Repair: $1,000-$6,800
Installation: $7,750-$15,450

Data last updated: 2026-04-13