Septic tanks

Logo rewacter blanc

Rewatec septic tanks provide primary wastewater treatment for a complete range of applications, from residential to large-scale projects. Made of robust polyethylene, these solutions have the durability you need to protect your property investment and the environment for a lifetime.

septic tank septic system header
septic tank septic system easy installation
Easy installation

Lightweight and easy to maneuver.
Ideal for sites with limited access.
Pre-assembled and ready to use models.

septic tank septic system built to last
Built to last

Leak-proof design. 
Robust and durable polyethylene shells.
Ribbed sidewalls for added strength.

septic tank septic system thoughtful design
Thoughtful design

Compatible with all septic solutions.
Integrated effluent filter.
Childproof access covers.


What is a septic tank?

A septic tank receives and partially treats raw wastewater from properties not connected to municipal sewer lines.

With nominal capacities from 740 up to 13,200 US gal, Rewatec septic tanks are ideal for virtually any application. Quick to install, simple to use, and easy to maintain, these durable solutions give you discreet and reliable performance you can trust. 

Rewatec septic tanks are delivered as one-piece units, meaning they have no weak seams that could leak and contaminate your property.


  • primary residences
  • office buildings
  • restaurants
  • grocery stores
  • campgrounds and parks

How do our septic tanks work?

Primary treatment

Wastewater from the property runs into a main drainage pipe that flows into the septic tank. The septic tank’s job is simple: it allows wastewater to separate into three layers.

In the top layer, oils, greases, and fats float to the surface and form scum. In the bottom layer, solids settle on the bottom of the tank and form sludge. Both scum and sludge are removed by a septic pumper as often as needed.

Partially clarified liquids accumulate between the layers of scum and sludge. They exit the septic tank through a pipe with an integrated effluent filter. This filter – standard in all Rewatec septic tanks – captures suspended solids that could clog system components downstream.

Wastewater final dispersal

After primary treatment, wastewater is piped into one of the following:

  • an advanced secondary system for additional treatment (Ecoflo, MBR, MBBR, or SBR)
  • a sand filter
  • a leach field (also known as a drain field)

Septic tank maintenance

Protect your investment in your Rewatec septic tank by having it regularly inspected and pumped by a qualified septic service professional.

The frequency of service depends on the size of your tank, the amount of wastewater your property generates, and the environmental regulations in your area. It is best to speak with a local septic professional to determine the service schedule that is right for you.

When your service provider visits your property to inspect your system, they should:

  • check for cracks and leaks in the tank
  • measure the scum and sludge layers
  • pump the septic tank, if needed
  • clean the effluent filter in the outlet pipe
  • keep and update maintenance records for your system
  • explain any areas of concern and recommend next steps


Download owner's manual


Residential septic tanks

Our 5-year warranty for residential septic tanks includes:

  • polyethylene shells
  • reservoir parts
  • labor

Commercial and municipal septic tanks

Our 2-year warranty for commercial and municipal septic tanks includes:

  • polyethylene shells
  • reservoir parts

Available models

Trust our septic tanks to give you solutions tailored to your needs. With models from residential to large-scale, our lineup offers a full range of choices to ensure your next wastewater treatment project is a success.

Get a free quote

Contact our expert in your area for more information about the Rewatec septic tank and accessories that are right for you.

free quote