Septic permits and fees in Gaston County, North Carolina
A septic system permit in Gaston County costs $300. The county sets that fee in its own schedule. Gaston County Environmental Health issues the permit. State rules fix the tank floor at 1,000 gallons. A private well needs 50 feet from the whole system, a property line 10 feet. Gaston County — Environmental Health Fee Schedule · checked 2026-10-06
$300
Septic system permit
checked 2026-10-06
1,000 gallons
Tank floor, state rule
checked 2026-09-23
50 feet
System to a well
checked 2026-09-23
Which septic permit applies in Gaston County?
The septic system permit, and it starts with the site evaluation. The permit follows a passing evaluation. The building permit follows the septic permit.
The rule does not require a percolation test.
N.C. Department of Health and Human Services — On-Site Water Protection · checked 2026-09-23
What are the current septic fees in Gaston County?
$300 for a septic system permit, on the county's own fee schedule.
Applies to a new septic system for a home.
| Improvement Permit (IP)* | $300 | a system the source lists as new septic system, with the Authorization to Construct |
|---|---|---|
| Authorization to Construct (AC)* | $350 | a system the source lists as new septic system, with the Improvement Permit |
| Septic Expansion Permit | $250 | a system the source lists as expansion |
| Existing System Approval | $200 | a system the source lists as existing system |
| Improvement Permit Checklist | $100 | any system |
| Septic Repair Permit | $75 | a system the source lists as repair |
| Authorized Onsite Wastewater Evaluator | $35 | any system |
| Engineered Option Permit (EOP) | $35 | a engineered option system |
The Authorization to Construct is a second fee.
Gaston County — Environmental Health Fee Schedule · checked 2026-10-06
What state law fixes for every North Carolina system
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1,000 gallons minimum septic tank capacity
Applies to a home with four bedrooms or fewer. A five-bedroom home needs 1,250 gallons.
The state sets this floor for every septic tank in North Carolina.
NC Division of Public Health, On-Site Water Protection Branch · checked 2026-09-23
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50 feet from a private drinking-water well to any part of the system
Applies to a private well, or an upslope spring, that serves one home.
Table IX of .0601, measured on the ground from the nearest part of the system. A community or shared well carries a larger setback in the same table.
15A NCAC 18E .0601, Location of Wastewater Systems, Table IX · checked 2026-09-23
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10 feet from any property line
Applies to any property line.
NC Division of Public Health, On-Site Water Protection Branch · checked 2026-09-23
What Gaston County requires that the state does not
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The office offers an Existing System Approval before you build on a lot with a septic system. Staff find the tank with metal probes.
Applies to a lot that already has a septic system.
Gaston County — On-Site Wastewater and Wells · checked 2026-10-06
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The county asks for a septic check before a pool or another building goes on a lot with a tank.
Applies to a lot with a septic tank in the ground.
Gaston County — FAQ, When do I need a permit from the Health Department · checked 2026-10-06
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The county asks for a copy of the Health Department permit when you apply for a building permit.
Applies to a lot that needs a well or septic permit.
Gaston County — FAQ, When do I need a permit from the Health Department · checked 2026-10-06
Where do you file the application with Gaston County Environmental Health?
Gaston County Environmental Health, 991 W Hudson Blvd, Gastonia, NC 28052, 704-853-5000.
Gaston County — On-Site Wastewater and Wells · checked 2026-10-06
The steps, in the county's order
- Apply for an Improvement Permit and pay the fee. An Environmental Health Specialist calls to set a site visit.
- The specialist checks the soil. If the soil is suitable, the county issues the Improvement Permit. It is valid for 5 years.
- When you are ready to build, apply for an Authorization to Construct and pay the fee.
- A certified septic contractor installs the system. The office approves it and issues the Operation Permit.
Gaston County — On-Site Wastewater and Wells · checked 2026-10-06
How do you get a copy of your septic permit record in Gaston County?
Ask Gaston County Environmental Health for the permit record for the property. Call 704-853-5000 or start at its website.
Gaston County — On-Site Wastewater and Wells · checked 2026-10-06
The county keeps septic records from the 1950s. Search for a record online or send a request.
Gaston County — On-Site Wastewater and Wells · checked 2026-10-06
Sources
Each figure on this page has a government source and a checked-on date.
Verify before you act. Septic rules are set locally and they change. Check anything here before you spend money on it. Call the Gaston County Environmental Health, on 704-853-5000.