Septic Systems in Essex County, MA

Regulations, costs, soil data & local providers

Pop. 809,829 ~5.1% on septic ~16,521 septic homes

Septic pumping in Essex County, Massachusetts costs $450-$900 (avg $650). A new septic system installation costs $9,250-$18,500. Approximately 16,521 homes in this county use septic systems.

Septic System Costs in Essex County

ServiceLowAverageHigh
Pumping / Cleaning$450$650$900
Routine Inspection$350$500$700
Real Estate Inspection$650$900$1250
Minor Repair$1,150$1,650$8,100
Conventional Installation$9,250$13,200$18,500
Aerobic System Installation$17,300$24,750$34,650
Drainfield Replacement$9,250$13,200$18,500
Perc Test$1,400$2,000$2,800

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

Groundwater & Water Table in Essex County

Monitoring Wells
12
Avg Depth to Water
10.9 ft
Median Depth
10.6 ft
Shallowest Recorded
0.5 ft Shallow Risk

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

Source: USGS National Water Information System. Based on 781 measurements from monitoring wells.

Septic Regulations & Permits in Essex County

State Regulatory Body
Massachusetts DEP
Inspection Required for Home Sale
Yes
Nitrogen Reduction Areas
Yes
Advanced Treatment Required
In designated areas

Title 5 inspection mandatory within 2 years before property sale or 6 months after. Strict Cape Cod nitrogen rules.

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

Septic System FAQ for Essex County

How much does septic pumping cost in Essex County?
Septic pumping in Essex County, Massachusetts typically costs between $450 and $900, with an average of $650. 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 Essex County?
A conventional septic system installation in Essex County typically costs $9,250-$18,500. An aerobic treatment unit (ATU) costs $17,300-$34,650. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in Essex County?
Yes. Virtually all counties in Massachusetts 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 Essex County health department for current requirements and fees.
What soil types are in Essex County and how do they affect septic systems?
Contact the county health department for soil evaluation requirements.
Is a septic inspection required when selling a home in Essex County?
Yes. Massachusetts 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 $900. 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 Essex 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 16,521 septic systems in Essex County, there are many local providers offering regular pumping services.
How long does a septic system last in Essex County?
A well-maintained septic system in Essex 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

Population809,829
Est. Septic Homes16,521
Avg Pumping Cost$650

More in Massachusetts

Suffolk County Middlesex County Norfolk County Plymouth County Bristol County Worcester County

Common Septic Services

Pumping: $450-$900
Inspection: $350-$700
Repair: $1,150-$8,100
Installation: $9,250-$18,500

Data last updated: 2026-04-13