Roth MultiTank (RMT) Septic Tank Cistern Pump Fralo Tank Poly Septic Tank

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Roth MultiTank (RMT)

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Roth MultiTank-one tank for your septic, cistern, pump and rainwater collection tank needs

The Roth MultiTank is the first tank of its kind. It can be used for water cistern, pump, holding, rainwater or septic tank. This is possible due to its special construction of an inner layer of FDA approved virgin HDPE, two inside layers of PE for improved stability, plus one outer layer of black and UV-stabilized PE.


Not only is it special in terms of its construction, it also has the best warranty the industry has to offer: lifetime corrosion protection and 5 years of labor insurance coverage (see warranty for more details).







Less digging, avoid high-water table

Lightweight vs. concrete:

Installers can handle without special equipment

Heavyweight vs. poly:

Strongest tank on the market

Multi-port inlet/outlet:

Convenient field piping, enter/exit tank on ends or sides

2 - 24" manways:

Easy access for maintenance and service

Poly construction:

Lifetime corrosion protection and Industry first 5 year labor insurance coverage


Use as a septic, pump, holding or rainwater collection tank

Rugged construction:

Use of native materials for backfill (no clay)

Cylindrical shape:

Absolutely no water required for backfill, saves time

Threaded riser system:

Easy installation, no screws or assembly

  • World's Strongest Plastic Septic Tank on the Market
  • Industry Best Warranty
  • Lightweight Design
  • A Perfect Concrete Alternative
  • CSA, NSF and IAPMO Certified
  • High Strength Engineered Resin
  • Water-Tight Seamless Construction
  • Safe and Unique Access Riser System
  • Patented COEX-4 Multi-Layer Co-Extrusion Process
  • Code Compliant - meets or exceeds most all requirements in North America
  • Installation Ease - easy handling and adaptable inlet/outlet pipe configurations
  • Heavy Duty - Designed to perform under tough conditions
  • Versatility - Suitable for septic or pump tank applications
  • Patented Design

Roth Riser for Septic Tank, RMT, Roth Septic Tank, Fralo Tank


  • 24" I.D. Riser
  • Maximum versatility in the field
  • Watertight connection
  • Extra-strong flat top design
  • Unique anti-slip surface
  • Easily secured against unauthorized entry
  • Excellent for riser retro-fit or cast-in

    Roth's SUPER Septic Tank Access Riser
    The heavy-weight champion of riser systems! Designed to provide safe and dependable access to your onsite wastewater treatment tanks, whether cast in concrete or retrofitted to an existing tank. Engineered with high-density polyethylene and gasketed watertight connection. The Roth S.T.A.R. system is the quality solution to your access riser needs.
Roth Distribution Box, D-Box for Roth Septic Tank, RMT, Roth Tank, Fralo Tank

Septic System Distribution Box

The Roth STAR Monster D-Box is the only distribution box you'll want to carry. The STAR system is engineered with U.V. resistant high-density polyethylene and a gasketed watertight connection. The new design offers ease of installation with outlets exiting in four directions.

  • 12-Hole Distribution Box
  • Quick & easy pipe seals secured with threaded nut
  • New design allows parallel pipe runs on 4 sides
  • Invert drop of 2" between inlet and outlet pipes
  • 24" I.D. provides plenty of elbow room during installation, leveling and maintenance
  • Basin can be weighted with aggregate to maintain level
  • Bring to grade using the STAR Threaded Riser System
  • Includes a STAR-24L (threaded lid), gasket and security seal
Roth Plug Cover for Roth Septic Tank, RMT, Roth Tank, Fralo Tank


  • Maximum versatility in the field
  • Extra-strong flat top design
  • Unique anti-slip surface
  • Easily secured against unauthorized entry
  • Excellent for riser retro-fit
  • Gasket and two security seals included
  • Fits all major manufacturer's 24" pipe
Roth Tank Adapter for Roth Septic Tank, RMT, Roth Tank, Fralo Tank


  • Retrofit - Add a ready-access riser system to existing septic tanks
  • Round or Square Openings - Cover up to 24" corrugated pipe or Roth's STAR 24" Threaded Riser System
  • Stay-Put System - Secure mechanically and/or with a sealant to prevent shifting and maintain integrity
  • Complete From Top to Bottom - Finish the job with Roth's STAR Plug Cover... the industry's best 










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WARNING: These products can expose you to chemicals such as Titanium Dioxide, Crystalline Silica Quartz and Palygorskite, which are known to the State of California to cause cancer. For more information, go to