Well & water · West CT branch
Treatment drywells in Plymouth, CT
Softeners and filters flush salty backwash every few days. A treatment drywell takes it so your septic system and leach field do not have to.
- Drywell, up to 300 galFrom $3,256
- Drywell, Level 2From $3,955
- Extra 124 gallonsFrom $476
What is included
Every drywell includes.
- Up to 300 gallonsA discharge drywell sized for water treatment backwash.
- Built to standardMeets or exceeds your local health department standards.
- Permit and inspectionThe permit and inspection your health department requires.
- More capacityExtra capacity with 3/4-inch stone or added units when needed.
- Graded and seededRough raked, machine graded and covered with seed and hay.
- Tied to your systemConnected to the softener or filter discharge.
Starting prices
Drywell prices.
Starting installed prices.
- Members, underground work
- 5% off
| Service | What it covers | Starting at |
|---|---|---|
Treatment discharge drywell Up to 300 gallons |
Drywell for water treatment waste, permit, inspection, grading and seed. | From$3,256 Members from $3,093 Get a quote → |
Treatment discharge drywell Level 2 |
For harder sites, same capacity and inclusions. | From$3,955 Members from $3,757 Get a quote → |
Additional capacity 124 gallons |
Added with 3/4-inch stone or extra units. | From$476 Members from $452 Get a quote → |
Ledge and limited access are priced on site. Starting prices from our 2026 pricebook. A real person confirms your price before anything is scheduled.
How it works
Size. Permit. Install.
Most drywells take a day.
- 01
Size
We size the drywell for your treatment system.
- 02
Permit
We pull the permit with your health department.
- 03
Install
The drywell goes in, gets inspected and the yard is seeded.
Questions
Treatment drywells, answered.
Answers from licensed plumbers and septic installers. Still unsure? Call West CT at (860) 248-6262.
Why can my softener not drain into the septic?
How much does a treatment drywell cost?
Related services
The rest of the system.
The same crew handles every pipe on the property, from the well to the leach field.
Softener on septic? Give it a drywell.
Treatment drywells across western Connecticut with permits included.