Septic costs
A new conventional system runs about $5,575 to $8,000. Lots that need a mound or an advanced system run $10,000 to $20,000. Here is every price, with its source.
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| Job | Typical price | Notes |
|---|---|---|
| Pumping a septic tank | $175 to $550 | By tank size. Average $222 in Minneapolis. (source) |
| Inspection | $210 to $943 | Average $576. Camera inspections cost more. (source) |
| Soil test (perc test) and design | $700 to $2,000 | For the soil test. Needed before any new system. (source) |
| New conventional system | $5,575 to $8,000 | Tank and trenches on good soil. Average $6,614. (source) |
| Mound system | $10,000 to $20,000 | Built up above ground where soil or groundwater is too close. (source) |
| Aerobic (advanced) system | $10,000 to $20,000 | Adds air to treat sewage. Works on smaller lots. (source) |
| New drain field only | $5,000 to $12,000 | Replacing the soil treatment area, keeping the tank. (source) |
| Replacing a whole system | $3,150 to $21,000 | Depends on the type of system the site needs. (source) |
| Septic repairs | $630 to $3,150 | Lids, baffles, filters, pumps and pipes. (source) |
| Permits and inspections | $500 to $1,000 | Paid to your county, city or township. (source) |
Minneapolis-area prices from Angi, updated May to Aug 2026. Prices in greater Minnesota can differ. Get a written quote for your site.
Many Minnesota counties offer low-interest loans for replacing a failing system, and some have grants for low-income households. Examples: Washington County, Le Sueur County, Blue Earth County. Ask your county's septic or environmental office what it offers.
Sources: Angi, septic system cost in Minneapolis (Aug 2026) · Angi, mound septic systems (Jul 2026) · Angi, septic pumping cost in Minneapolis (May 2026) · Angi, septic inspection cost in Minneapolis (Jul 2026)
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Angi puts a conventional system in the Minneapolis area at $5,575 to $8,000, with an average of $6,614. Mound and aerobic systems run $10,000 to $20,000.
$10,000 to $20,000 on average, according to Angi. Mounds cost more because the system is built up above the ground.
Angi puts a full replacement in the Minneapolis area at $3,150 to $21,000, and a new drain field at $5,000 to $12,000.
$175 to $550 depending on tank size, with an average of $222 in Minneapolis (Angi).
Most run $210 to $943, with an average of $576 in Minneapolis (Angi).