Septic Systems in Providence County, RI

Regulations, costs, soil data & local providers

Pop. 660,741 ~3% on septic ~7,929 septic homes

Septic pumping in Providence County, Rhode Island costs $400-$850 (avg $600). A new septic system installation costs $8,600-$17,200. Approximately 7,929 homes in this county use septic systems.

Septic System Costs in Providence County

ServiceLowAverageHigh
Pumping / Cleaning$400$600$850
Routine Inspection$300$450$650
Real Estate Inspection$600$850$1200
Minor Repair$1,100$1,550$7,550
Conventional Installation$8,600$12,300$17,200
Aerobic System Installation$16,150$23,100$32,350
Drainfield Replacement$8,600$12,300$17,200
Perc Test$1,300$1,850$2,600

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

Groundwater & Water Table in Providence County

Monitoring Wells
6
Avg Depth to Water
9.2 ft
Median Depth
8.4 ft
Shallowest Recorded
1.9 ft Shallow Risk

Moderate water table depth. Some sites may require modified systems or mound systems.

Source: USGS National Water Information System. Based on 721 measurements from monitoring wells.

Septic Regulations & Permits in Providence County

State Regulatory Body
Rhode Island 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 Providence County health department for current permit requirements, fees, and approved system types.

Septic System FAQ for Providence County

How much does septic pumping cost in Providence County?
Septic pumping in Providence County, Rhode Island typically costs between $400 and $850, with an average of $600. 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 Providence County?
A conventional septic system installation in Providence County typically costs $8,600-$17,200. An aerobic treatment unit (ATU) costs $16,150-$32,350. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in Providence County?
Yes. Virtually all counties in Rhode Island 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 Providence County health department for current requirements and fees.
What soil types are in Providence County and how do they affect septic systems?
Contact the county health department for soil evaluation requirements.
How often should I pump my septic tank in Providence 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 7,929 septic systems in Providence County, there are many local providers offering regular pumping services.
Does the water table in Providence County affect septic systems?
Yes. The average groundwater depth in Providence County is approximately 9.2 feet, based on USGS monitoring data from 6 wells. While this is sufficient for many conventional systems, sites with lower elevations or seasonal water table fluctuations may require alternative system designs. A site-specific evaluation is always recommended.
How long does a septic system last in Providence County?
A well-maintained septic system in Providence 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. 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

Population660,741
Est. Septic Homes7,929
Avg Pumping Cost$600

Common Septic Services

Pumping: $400-$850
Inspection: $300-$650
Repair: $1,100-$7,550
Installation: $8,600-$17,200

Data last updated: 2026-04-13