Septic Systems in Rankin County, MS

Regulations, costs, soil data & local providers

Pop. 157,031 ~26.2% on septic ~16,457 septic homes Moderately well drained soil

Septic pumping in Rankin County, Mississippi costs $250-$500 (avg $350). A new septic system installation costs $4,750-$9,500. USDA soil data rates 3% of county soils as suitable for septic absorption fields. Approximately 16,457 homes in this county use septic systems.

Septic System Costs in Rankin County

ServiceLowAverageHigh
Pumping / Cleaning$250$350$500
Routine Inspection$200$250$350
Real Estate Inspection$300$450$650
Minor Repair$600$850$4,200
Conventional Installation$4,750$6,800$9,500
Aerobic System Installation$8,900$12,750$17,850
Drainfield Replacement$4,750$6,800$9,500
Perc Test$700$1,000$1,400

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

Soil & Septic Suitability in Rankin County

Drainage Class
Moderately well drained
Hydrologic Group
C
Unique Soil Types
52
Avg Bedrock Depth
1.9 ft

Dominant Soil Types

Soil SeriesCoverageDrainageHydro Group
Kipling 365 Somewhat poorly drained D
Providence 357 Moderately well drained C/D
Tippah 316 Moderately well drained C
Smithdale 261 Well drained B
Savannah 241 Moderately well drained C

Septic Tank Absorption Field Suitability

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

Not Limited (Good)3%
Somewhat Limited0%
Very Limited97%

Overall rating: Very limited

Source: USDA NRCS Soil Survey Geographic Database (SSURGO)

Septic Regulations & Permits in Rankin County

State Regulatory Body
Mississippi Department of Health/Environment
Inspection Required for Home Sale
No / Varies
Nitrogen Reduction Areas
No
Advanced Treatment Required
No

Contact county health department for specific requirements.

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

Septic System FAQ for Rankin County

How much does septic pumping cost in Rankin County?
Septic pumping in Rankin County, Mississippi typically costs between $250 and $500, with an average of $350. 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 Rankin County?
A conventional septic system installation in Rankin County typically costs $4,750-$9,500. An aerobic treatment unit (ATU) costs $8,900-$17,850. Given the predominantly moderately 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 Rankin County?
Yes. Virtually all counties in Mississippi 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 Rankin County health department for current requirements and fees.
What soil types are in Rankin County and how do they affect septic systems?
Rankin County has predominantly Kipling, Providence, Tippah soils. The dominant drainage class is Moderately well drained with hydrologic group C. The USDA rates 3% of surveyed soils as "Not Limited" for septic absorption fields, 0% as "Somewhat Limited", and 97% as "Very Limited".
How often should I pump my septic tank in Rankin 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 16,457 septic systems in Rankin County, there are many local providers offering regular pumping services.
Can I install a conventional septic system in Rankin County?
It depends on your specific site. USDA soil data shows that 97% of soils in Rankin County are rated "Very Limited" for septic absorption fields, while only 3% 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 ($700-$1400) and soil evaluation are required before the county will approve a system design.
How long does a septic system last in Rankin County?
A well-maintained septic system in Rankin 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 (Rankin County has predominantly moderately 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

Population157,031
Est. Septic Homes16,457
Avg Pumping Cost$350
Drainage ClassModerately well drained
Septic SuitabilityVery limited

Common Septic Services

Pumping: $250-$500
Inspection: $200-$350
Repair: $600-$4,200
Installation: $4,750-$9,500

Data last updated: 2026-04-13