Cost engine

How much does drain field replacement cost?

National price ranges for drain field replacement, the unit pricing contractors quote from, and what the same job costs across local markets.

Model reviewed August 2026

Drain Field Replacement cost

$6,000 – $25,000

Most homeowners pay around $12,500 for drain field replacement, or $1,800–$5,500 per bedroom of design flow. Permit fees add $150–$900.

What homeowners reported paying

Invoice amounts submitted by homeowners nationwide, shown beside the model.

Price breakdown

Budget scope$6,000
Typical project$12,500
Premium / complex$25,000
per bedroom of design flow$1,800 – $5,500
Permit fees$150 – $900
Timeline2-4 days of work, 3-10 weeks including evaluation and permitting

What drives the price

  • Design flow, usually set by bedroom count
  • Soil percolation rate and depth to water table
  • Conventional trenches, chambers or an engineered mound system
  • Tank condition, pump chamber and distribution box replacement
  • Excavation access, tree removal and landscape restoration

Cost by state

The same scope priced through each state's labor, material and code load.

Most expensive states

Hawaii$21,600California$18,100Alaska$17,400New York$17,200Massachusetts$16,800District of Columbia$16,500

Least expensive states

Mississippi$10,600Oklahoma$10,900Arkansas$10,900West Virginia$11,000Kansas$11,000Nebraska$11,100

Drain Field Replacement runs about 104% more in Hawaii than in Mississippi for an identical scope — almost entirely a labor and code-load difference.

Drain Field cost in Hawaii$10,400 – $43,200 · +73%Drain Field cost in California$8,700 – $36,200 · +45%Drain Field cost in Alaska$8,400 – $34,900 · +40%Drain Field cost in New York$8,300 – $34,400 · +38%Drain Field cost in Massachusetts$8,000 – $33,500 · +34%Drain Field cost in District of Columbia$7,900 – $33,100 · +32%Drain Field cost in New Jersey$7,800 – $32,400 · +30%Drain Field cost in Connecticut$7,500 – $31,400 · +26%Drain Field cost in Rhode Island$7,400 – $30,600 · +23%Drain Field cost in Washington$7,300 – $30,500 · +22%Drain Field cost in Oregon$7,200 – $30,100 · +20%Drain Field cost in Maryland$7,000 – $29,300 · +17%Drain Field cost in Illinois$6,800 – $28,500 · +14%Drain Field cost in New Hampshire$6,700 – $28,000 · +12%Drain Field cost in Colorado$6,700 – $27,800 · +11%Drain Field cost in Florida$6,600 – $27,400 · +10%Drain Field cost in Nevada$6,600 – $27,300 · +9%Drain Field cost in Vermont$6,500 – $27,200 · +9%Drain Field cost in Pennsylvania$6,500 – $27,000 · +8%Drain Field cost in Delaware$6,400 – $26,800 · +7%Drain Field cost in Maine$6,500 – $26,900 · +7%Drain Field cost in Minnesota$6,400 – $26,800 · +7%Drain Field cost in Virginia$6,400 – $26,500 · +6%Drain Field cost in Arizona$6,100 – $25,500 · +2%Drain Field cost in Montana$6,100 – $25,300 · +1%Drain Field cost in Wisconsin$6,000 – $24,900 · 0%Drain Field cost in Michigan$5,900 – $24,600 · -2%Drain Field cost in North Dakota$5,900 – $24,500 · -2%Drain Field cost in Utah$5,900 – $24,600 · -2%Drain Field cost in Wyoming$5,900 – $24,400 · -2%Drain Field cost in Idaho$5,800 – $24,200 · -3%Drain Field cost in Louisiana$5,800 – $24,200 · -3%Drain Field cost in Texas$5,800 – $24,200 · -3%Drain Field cost in Georgia$5,700 – $23,800 · -5%Drain Field cost in New Mexico$5,700 – $23,700 · -5%Drain Field cost in North Carolina$5,700 – $23,600 · -6%Drain Field cost in Ohio$5,600 – $23,500 · -6%Drain Field cost in South Carolina$5,600 – $23,300 · -7%Drain Field cost in Indiana$5,500 – $23,100 · -8%Drain Field cost in Alabama$5,400 – $22,600 · -10%Drain Field cost in Missouri$5,400 – $22,600 · -10%Drain Field cost in Tennessee$5,400 – $22,600 · -10%Drain Field cost in Iowa$5,400 – $22,500 · -10%Drain Field cost in Kentucky$5,400 – $22,300 · -11%Drain Field cost in South Dakota$5,400 – $22,400 · -10%Drain Field cost in Nebraska$5,300 – $22,200 · -11%Drain Field cost in Kansas$5,300 – $22,000 · -12%Drain Field cost in West Virginia$5,300 – $21,900 · -12%Drain Field cost in Arkansas$5,200 – $21,700 · -13%Drain Field cost in Oklahoma$5,200 – $21,700 · -13%Drain Field cost in Mississippi$5,100 – $21,200 · -15%

State benchmark table

Low, typical and high drain field replacement pricing in every state, from the same model as the ranges above.

StateLowTypicalHighvs US
Hawaii$10,400$21,600$43,200+73%
California$8,700$18,100$36,200+45%
Alaska$8,400$17,400$34,900+40%
New York$8,300$17,200$34,400+38%
Massachusetts$8,000$16,800$33,500+34%
District of Columbia$7,900$16,500$33,100+32%
New Jersey$7,800$16,200$32,400+30%
Connecticut$7,500$15,700$31,400+26%
Rhode Island$7,400$15,300$30,600+23%
Washington$7,300$15,200$30,500+22%
Oregon$7,200$15,000$30,100+20%
Maryland$7,000$14,700$29,300+17%
Illinois$6,800$14,200$28,500+14%
New Hampshire$6,700$14,000$28,000+12%
Colorado$6,700$13,900$27,800+11%
Florida$6,600$13,700$27,400+10%
Nevada$6,600$13,700$27,300+9%
Vermont$6,500$13,600$27,200+9%
Pennsylvania$6,500$13,500$27,000+8%
Delaware$6,400$13,400$26,800+7%
Maine$6,500$13,400$26,900+7%
Minnesota$6,400$13,400$26,800+7%
Virginia$6,400$13,300$26,500+6%
Arizona$6,100$12,800$25,500+2%
Montana$6,100$12,600$25,300+1%
Wisconsin$6,000$12,500$24,9000%
Michigan$5,900$12,300$24,600-2%
North Dakota$5,900$12,300$24,500-2%
Utah$5,900$12,300$24,600-2%
Wyoming$5,900$12,200$24,400-2%
Idaho$5,800$12,100$24,200-3%
Louisiana$5,800$12,100$24,200-3%
Texas$5,800$12,100$24,200-3%
Georgia$5,700$11,900$23,800-5%
New Mexico$5,700$11,900$23,700-5%
North Carolina$5,700$11,800$23,600-6%
Ohio$5,600$11,700$23,500-6%
South Carolina$5,600$11,600$23,300-7%
Indiana$5,500$11,500$23,100-8%
Alabama$5,400$11,300$22,600-10%
Missouri$5,400$11,300$22,600-10%
Tennessee$5,400$11,300$22,600-10%
Iowa$5,400$11,200$22,500-10%
Kentucky$5,400$11,200$22,300-11%
South Dakota$5,400$11,200$22,400-10%
Nebraska$5,300$11,100$22,200-11%
Kansas$5,300$11,000$22,000-12%
West Virginia$5,300$11,000$21,900-12%
Arkansas$5,200$10,900$21,700-13%
Oklahoma$5,200$10,900$21,700-13%
Mississippi$5,100$10,600$21,200-15%

Cost by city

Same scope, adjusted for local labor, material and permit pricing. Each city also has a permit page.

Frequently asked questions

Who issues a drain field permit?

Onsite sewage permits are usually issued by the county or state health department rather than the building department, and a soil evaluation is normally required before a permit is issued.

Can a failed drain field be repaired instead of replaced?

Sometimes. Pumping, jetting or fixing a broken distribution box can restore a field that failed from overload rather than age. A field that has lost soil acceptance has to be replaced.

Do I need a permit for drain field replacement?

In most jurisdictions this work is permitted and inspected. Requirements are set locally, so confirm the current application and inspection checklist with your building department before work starts.

How long does drain field replacement take?

2-4 days of work, 3-10 weeks including evaluation and permitting. Permit review and inspection scheduling are usually the largest source of variation.

What changes the price the most?

The largest cost drivers are design flow, usually set by bedroom count; soil percolation rate and depth to water table; conventional trenches, chambers or an engineered mound system.

Sources

Sources & verification

Model vintage August 2026. The links above are the issuing agencies' own pages — we publish them so you can confirm the current rule yourself, not as evidence that each fact on this page was re-checked with them today. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing, not quotes. Permit rules change; confirm with the building department before starting work.