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Self-Performed NYS DOL Licensed Serving Central New York

Septic System Replacement in Central NY

When pumping stops working, the system is telling you something. We replace tanks, leach fields, and full systems to NYSDOH 75-A: assessed, designed, permitted, dug, inspected, documented.

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SERVING ALL OF CENTRAL NEW YORK · ONONDAGA · OSWEGO · MADISON · ONEIDA · CAYUGA · CORTLAND
Septic Replacement in Central NY typically runs
$8,000
to
$28,000
Tank replacement to full engineered mound system. Written fixed-price quote on every job.
$8,000
Start From
5.0★
117 Reviews
48hr
Quote Turnaround
100%
Self-Performed
What You Need to Know

Replace it once. Replace it right.

Real replacement pricing, what is included, and the questions every CNY homeowner asks.

$8K-$15K
Tank-only replacement
$8K-$15K
Leach field or full conventional system replacement
$22K-$28K
Engineered mound replacement, high water table
Failed-system assessment
Perc test and site eval
NYSDOH 75-A replacement design
County health permits
Old tank decommissioning per code
New tank set and plumbing tie-in
Leach field replacement
As-built drawing + inspection coordination

Tank, leach field, or full conventional system replacement runs $8,000 to $15,000. Engineered mound systems for high water table sites run $22,000 to $28,000. Every job gets a written fixed price after a free site visit.

Sewage backing up again shortly after pumping, a leach field that stays soggy or smells, standing effluent over the field, and drains that slow every time it rains. A biomat-clogged field does not recover; repeated pump-outs are rent, not a fix.

Yes, if the tank passes inspection. We perc test the replacement area, design the new field to NYSDOH 75-A, and tie it into the existing tank. If the tank is steel or cracked concrete, replacing it at the same time avoids digging twice.

Only if site conditions force it: high water table, shallow bedrock, tight clay soils, or small lots that cannot meet separation distances. That is what perc tests and the 75-A design step determine. Much of the lake plain north of Syracuse needs raised or mound systems.

Permits and design typically take 2-5 weeks through the county health department. On-site work runs 2-5 days for a conventional replacement, about a week for mound systems. The yard is rough-graded and seeded when we leave.

We do. County health department permit, design submission, inspections during construction, and the final as-built drawing all go through Backwell. You get one contract and one number.

Repair vs Replace

When pumping stops being a fix.

The honest line between a $1,500 repair and a real replacement.

Replace the field when

Backups return weeks after pumping, the field stays soft and septic-smelling, or effluent ponds on the surface. That is biomat failure. The soil around the laterals is sealed and no amount of pumping reopens it. A new field in a fresh or reserve area, designed to current NYSDOH 75-A sizing, is the fix.

Replace the tank when

Steel tanks rust through, old concrete cracks at the seams, and baffles fall off. If the inspection shows structural failure, a new precast tank goes in. If you are already replacing the field on a 30-year-old system, replacing the tank in the same dig avoids paying for mobilization twice.

High water table sites

The lake plain north of Syracuse, lakefront parcels, and much of the Oswego and Oneida Lake shoreline cannot pass a standard perc test. Those sites take raised or engineered mound systems. It is premium work and we self-perform all of it: fill placement, pump chamber, pressurized laterals.

Related services

New construction? See septic installation. Not sure what is failing? Start with septic systems. Wet yards and field drainage: drain tile repair.

Service Area

Septic replacement near you.

Town-by-town septic replacement pages for our Central New York service area.

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