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Septic

Leach field repair in Plymouth, CT

A soggy yard or a slow system does not always mean a new field. We jet the lines, replace distribution boxes and only replace the field when it has to go.

4.81,386 reviews
call or text(860) 337-9233
Leach field prices
Repair before replace
Starting prices
  • Distribution box, under 2 ftFrom $749.96
  • Jet and pump field linesFrom $2,200
  • Distribution box, 2 to 8 ftFrom $1,138.09
  • New field, 495 ELAFrom $16,822.43
Get a quote
New fields include engineered design and plan submission.
From$750Shallow distribution box
From$2,200Jet and pump the lines
2FTOf hand digging included
5%OFFInstalls, for members

What is included

Repair first. Replace last.

  • Jetting the field linesHigh-pressure jetting and pumping of the leach lines to remove sludge, with hand digging up to 2 feet.
  • Distribution box replacementA tipped or broken D-box sends all the water down one line. A new level box spreads it evenly again.
  • Camera inspectionWe run a camera through the lines, viewed live, to find crushed pipe, roots and blockages before recommending a new field.
  • Engineered replacementWhen a field has failed, the new one is designed by a licensed engineer from soil testing and submitted to your health district.
  • Permits and inspectionsWe handle the health district permit and inspections on replacement fields.
  • Graded and seededThe work area is raked, machine graded and covered with seed and hay.
Drainworks technician setting leaching chambers in a stone trench
Leach field work · western Connecticut

Starting prices

Leach field prices.

Most fields we see can be repaired. When one cannot, replacement is priced by the size of field your soil and house require, measured in effective leaching area (ELA).

Complete system offer
$500 off
Commercial line jetting
From $3,600
Leach field starting prices · Drainworks 2026 pricebook
ServiceWhat it coversStarting at
Distribution box
Under 2 feet deep
Excavate and replace with a new code-compliant PVC box.
From$749.96
Members from $712.46
Get a quote →
Distribution box
2 to 8 feet deep
Machine excavation and a new PVC box, residential.
From$1,138.09
Members from $1,081.18
Get a quote →
Concrete distribution box
Under 4 feet deep
Install or replace a concrete box.
From$1,029.11
Members from $977.65
Get a quote →
Jet and pump field lines
Residential
Jetting and pumping of the leach lines to remove sludge, with hand digging up to 2 feet.
From$2,200
Estimate
Get a quote →
New leach field
495 ELA
Engineered design, plan submission, installation, grading, seed and hay.
From$16,822.43
Members from $15,981.31
Get a quote →
New leach field
750 ELA
Engineered design, plan submission, installation, grading, seed and hay.
From$20,479.03
Members from $19,455.08
Get a quote →
New leach field
1,155 to 1,320 ELA
Larger homes and fields.
From$28,465.07
Members from $27,041.82
Get a quote →
Poor soil or limited space
495 to 875 ELA
Specialty designs for tight lots and slow soils.
From$19,822.43
Members from $18,981.31
Get a quote →

Field size is set by the soil test and the number of bedrooms. Soil testing is a separate step, priced on its own. Member prices are for Septic Plan and Family Plan members. Starting prices from our 2026 pricebook. Your technician confirms the price on site, and no work starts until you approve it.

Know the signs

Signs your field is struggling.

A leach field fails slowly. Catch these early and a repair may be all it needs.

Wet or spongy ground

Standing water or soft soil over the field, even when it has not rained.

Bright green stripes

Grass growing faster in lines over the field means effluent is close to the surface.

Slow drains after pumping

If the house still drains slowly right after a pump-out, the field may not be taking water.

Sewage odor outside

A smell over the field or near the distribution box.

How it works

Test. Repair. Or rebuild.

We prove what is wrong before we price a new field.

  1. 01

    Inspect

    Pump the tank, check the lines with a camera and open the distribution box.

  2. 02

    Repair

    Jet the lines or replace the box when that fixes the flow.

  3. 03

    Design

    If the field has failed, soil testing and an engineered design come next.

  4. 04

    Rebuild

    We install the new field, pass inspection and seed the yard.

Watch

What is perc rate for a septic system?

How the perc rate sets the size and design of a leach field. Recorded by the Drainworks crew.

What is perc rate for a septic system?How the perc rate sets the size and design of a leach field.
4.8Google · 1,386 reviews
Plumbing PLM.0288824-P7 · Septic installer #6174 · Home improvement HIC.0650272

Questions

Leach field repair, answered.

Answers from licensed plumbers and septic installers. Still unsure? Call us at (860) 337-9233.

How much does a new leach field cost in Connecticut?
At Drainworks, engineered replacement fields start from $16,822 for a 495 ELA field, and from about $28,465 for 1,155 to 1,320 ELA. Your soil test and the number of bedrooms set the size.
Can a leach field be repaired instead of replaced?
Often, yes. Jetting the lines (from $2,200) or replacing a tipped distribution box (from $750) restores many fields that look like they have failed.
What is ELA?
Effective leaching area. It is how Connecticut sizes leach fields. Slower soils and bigger houses need more ELA.
How long does a leach field replacement take?
Installation usually takes a few days once the design is approved by your health district. Design and approval come first.
Is there a discount for a complete system?
Yes. A new tank and leach field installed together is $500 off.

Membership

Out of sight, out of mind.

Like automatic oil delivery for your septic system. We inspect the tank every year and pump it every other year, without you keeping track.

Compare all three plans →

Septic Protection Plan

Septic only
Worry-free, automatic septic maintenance
$24.16per month · 24 months

Or $579.76 paid up front for the full term.

  • Automatic pump-out every two years
  • Yearly inspection and filter cleaning
  • Priority emergency service
  • 10% off septic pumping and repairs
  • 5% off future septic installs

Soggy yard? Find out why.

Leach field inspections and repairs across western Connecticut before anyone quotes a new field.