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Septic System Installation in Plainfield, CT

8 of the 10 licensed listings in Plainfield hold a Connecticut license class that covers this work: they are licensed to build and install septic tanks and drainfields, and repair or replace failed ones. Not every well and septic professional is; see all Plainfield listings for the full roster.

Need septic system installation quotes in Plainfield? Request free quotes and we'll route your request to local septic installers.

Laporte & Sons PlumbingLicensed

Plainfield, CT · License #33.003100

Collelo ExcavationLicensed

Plainfield, CT · License #33.005308

Gregory J LehtoLicensed

Plainfield, CT · License #33.006520

Bernard GrenierLicensed

Plainfield, CT · License #33.002806

Edwin Comeau JrLicensed

Plainfield, CT · License #33.003831

Louis J Soja JrLicensed

Plainfield, CT · License #33.003668

Thomas Buffington Associates INCLicensed

Plainfield, CT · License #33.005655, 33.005734

Blue Ribbon ConstructionLicensed

Plainfield, CT · License #33.006159

What does septic system installation cost?

A conventional septic system typically costs $3,600 to $12,500 installed. Alternative systems (aerobic, mound) for difficult sites run $10,000 to $20,000. Soil conditions drive most of the difference, which is why a soil or percolation test comes first.

Do I need a permit to install or replace a septic system?

Almost always. Your state or county health authority must permit new systems and most repairs, and the design has to match a soil evaluation of your site. Licensed installers usually handle permitting as part of the job; confirm it is included in the quote.

Before you hire

Confirm the license number on this page is still active with Connecticut, ask for proof of insurance, and get at least three written quotes; pricing on this work varies widely by site conditions.

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