How much does septic tank lid replacement cost?
Last updated July 10, 2026
Short answer
Replacing a septic tank lid or riser typically costs $200 to $600 in Windham County, covering the part and labor to access, remove, and reset it. Adding a riser to bring the lid to grade for easier future access often costs slightly more but pays for itself over the life of the tank.
A cracked, sunken, or missing tank lid is a safety hazard and should be addressed promptly rather than left. Many older tanks in the county have lids buried a foot or more below grade, which adds labor cost each time the tank needs service; installing a riser at lid-replacement time raises the access point to ground level, which reduces the cost of every future pumping or inspection. This is a relatively small repair compared to tank or drain field work, but it shouldn't be delayed, since an unstable or cracked lid can become a fall hazard over time.