Septic installation near Cumming and north Forsyth County, GA

Cumming is mostly sewered, but the north end of Forsyth County, up toward Coal Mountain and the Lake Lanier coves, still has plenty of homes on septic. If you are building, buying, or replacing a system there, here is what the county asks for and how we work around it.

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Why north Forsyth needs an installer who knows the lake and the hills

Forsyth County is mostly sewered in its middle and south, but septic is still common in the north end and around Lake Lanier, where UGA Extension notes that many homes manage wastewater on site. The Coal Mountain area at GA 369 and SR 9, about 1,220 feet above sea level, is where that mix shows up most clearly.

Growth is moving up GA 400 toward Dawson County. Coal Mountain Town Center, a roughly 140 acre mixed-use project that Toll Brothers began after county approval in 2022, is one sign of it. New homes, new roads, and new demand are spreading into ground that was woods and pasture, and some of that ground has no sewer line coming.

We work in Dawson County, just to the north, in the same family of soils and the same kinds of slopes. North Forsyth is a short drive from Dawsonville along GA 400 and Highway 9.

Septic services near Cumming

New home septic systems

Forsyth's building permit paperwork asks for septic approval from Environmental Health before you apply, so the septic work goes first.

Septic tank replacement

Forsyth's own application recommends a new soil report before any septic repair, so expect that to be part of the job.

Drain field installation

Forsyth's paperwork says surface and groundwater must be diverted around septic systems, which shapes how a field and the grading around it are laid out.

Lake Lanier lots

Forsyth has a pumping rebate program that began in the critical areas near the lake, which tells you how closely septic near the shoreline is watched.

Soil tests and permit help

Forsyth's site evaluation application includes a review before purchase and a lot review, which is a cheap way to learn what a lot can take.

Working in Cumming and Forsyth County

Septic in Forsyth County goes through Forsyth County Environmental Health, at 514 West Maple Street, Suite 404, Cumming, phone (770) 781-6909. They are part of the state health department, separate from the county building office at (770) 781-2114. The county's own page for septic tank systems says applications, reviews, and approvals are handled independently by Environmental Health.

New neighborhoods and commercial development are spreading from the Highway 369 and Highway 9 area. Some parcels are close enough to sewer to connect, and others are not. Ask Forsyth County Water & Sewer before you assume either way.

The pumping rebate is a useful side benefit, but it does not replace an evaluation. A tank that needs pumping every few months has a drain field problem that a rebate will not fix.

Wrapped drain pipe laid in a trench between a fieldstone retaining wall and the side of a house
Wrapped drain pipe carries roof and surface water away from the system.

Where we work around Cumming

  • Coal Mountain. The unincorporated community at GA 369 and SR 9, with a new town center under construction.
  • The Lake Lanier side. Peninsulas and coves on the north end of the lake, including the Pilgrim Mill area.
  • Highway 9 north toward Dawsonville. Where Forsyth and Dawson counties meet and the county line is easy to miss.

Check which county your parcel is in before you call an office. Your property tax bill will tell you. See our service area for the full list.

How septic installation works near Cumming, step by step

  1. Call and check for sewer

    We ask for the address and help you find out whether Forsyth County Water & Sewer or the City of Cumming has a line near your lot.

  2. Site evaluation and soil report

    Forsyth offers a site evaluation, including review before purchase, and a certified soil classifier produces the soil report for the design.

  3. Forsyth Environmental Health permit

    Environmental Health reviews and approves the design before you apply for the building permit. This is the compliance step, and it is separate from the building office. Permits are generally valid for 12 months.

  4. Install, inspect, and divert water

    We install, call for the inspection before covering, and grade so surface and roof water run around the field, as Forsyth's paperwork requires.

Green catch basin grate set in the soil beside an air conditioner pad
A catch basin grate marks where surface water leaves the yard.

About Cumming and north Forsyth County

Cumming is Forsyth County's seat, and the county's north end runs up toward Lake Lanier and the Dawson County line. Find out more at Forsyth County government and read the county's note on its septic tank pump-out program.

Nearby areas we also serve: Dawsonville and Dawson County and Dahlonega in Lumpkin County.

Cumming septic questions

Is Cumming on septic or sewer?
Both. Much of central and southern Forsyth County is sewered, but many homes in the north end and along the Lake Lanier coves manage wastewater with septic systems, according to UGA Extension. For a specific address, check with Forsyth County Water and Sewer or the City of Cumming first.
Who permits septic in Forsyth County?
Forsyth County Environmental Health, part of the Georgia Department of Public Health, at 514 West Maple Street, Suite 404 in Cumming, phone (770) 781-6909. The county's building permit paperwork asks for septic approval from that office before you apply for the building permit.
Can I get a lot reviewed before I buy it?
Forsyth's site evaluation application lists a review before purchase and a lot review among its service types. Use it. A septic review on a lot you have not yet bought is far cheaper than discovering a problem after closing.
Is there a pumping rebate in Forsyth?
Forsyth County Water & Sewer offers a $100 rebate credit toward the cost of pumping a tank, for eligible water customers whose septic system is at least 36 months old, when the work is done by a certified pumper and the application is filed within 90 days. It started near Lake Lanier and has since been expanded. It applies to pumping, not installation, but it is worth knowing about.
Do I need to report my well?
Yes. Forsyth's application says you are responsible for notifying Environmental Health of any well on your property or within 100 feet of it, and a permit can be voided if a well was not disclosed.
What about surface water running across the field?
Forsyth's paperwork says surface and groundwater must be diverted around the septic system. Roof drains, driveway runoff, and sloped yards can all send extra water across a field, so plan the grading with the field in mind.
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