As of 2010, manufactured components of sub-surface sewage treatment systems must be registered with the MPCA to be used in Minnesota. Manufacturers must apply to the agency for registration. The MPCA ensures products will protect public health and the environment while providing long-term performance when properly operated and maintained. If the product meets state requirements, it will be approved for use in Minnesota.
- Product registration requirements: Minnesota Rules Chapter 7083.4000 to 7083.4120
- Sewage tank requirements: Minnesota Rules Chapter 7080.1900 to 7080.2030
Answers to basic questions about who is affected by this rule change and how end-users will benefit from the product-registration process.
Please read this how-to before reviewing the product list:
The product listing does not constitute approval of the manufacturer's marketing, advertising or labeling practices or an endorsement of the products by the MPCA. Information obtained from the manufacturer is the sole responsibility of the manufacturer or other provider.
- List of registered SSTS treatment products (wq-wwists1-20)
- At-a-glance listing of proprietary treatment products for typical residential strength sewage (wq-wwists1-21)
- List of Registered Treatment Products for High Strength Sewage
- At-a-glance listing of proprietary treatment products for high-strength sewage
Public domain treatment technologies
- Single Pass Sand Filters - Recommended Standards and Guidance (RSG) Document (wq-wwists4-42)
- Recirculating Sand Filters - Recommended Standards and Guidance (RSG) Document (wq-wwists4-41)
These documents specify the recommended standards and guidance of both single-pass sand filters and recirculating sand filters. They must be permitted, designed and installed in accordance with Minn. R. 7080.2350 (Type IV Systems).
Proprietary distribution technologies
Proprietary distribution media are those products used to disperse effluent in soil-based treatment systems.
- List of Registered Distribution Media Products (wq-wwists1-22) for trenches, beds, at-grades, and mounds.
- At A Glance Listing of Proprietary Distribution Media Products (wq-wwists1-22b)
Public domain distribution technologies
- Drainfield rock distribution media standards and guidance (wq-wwists4-40)
This document specifies size, durability and cleanliness requirements for drainfield rock used in trenches, beds, at-grades mounds and sand filters. This document was developed with input from the SSTS Product Registration Technical Advisory Panel (TAP) and was reviewed by the SSTS Advisory Committee.
Sewage tanks include septic tanks, trash tanks, holding tanks, pump tanks, tanks used for surge storage, recirculation tanks and other processing tanks. See the list of registered SSTS sewage tanks on the Sewage Tanks page.
Public domain vs. proprietary treatment technologies
Public domain treatment technologies are products that were not developed by a specific company. These technologies do not have a patent or a registered trademark. Single pass sand filters and recirculating sand filters are both public domain treatment systems. Unlike the proprietary products listed above, public domain technologies don't require registration.
Operating permit examples
The following documents include: 1) a blank template for operating permits, 2) a list of operating permits, and 3) examples of operating permits for different types of systems and treatment levels. Examples are also provided for holding tanks, systems undergoing remediation, and for sewage tanks permitted by a local unit of government for septage storage.
- Wastewater Treatment and Dispersal Operating Permit Template
- List of operating permit examples
- Operating permit example: AK/HA Manufacturing/Hydro-Action Industries (Hydro-Action)
- Operating permit example: ANUA - formerly Bord Na Mona (Puraflo Peat Fiber Biofilter)
- Operating permit example: AquaTest (The Nibbler for high strength waste)
- Operating permit example: Bio-Microbics (MicroFAST)
- Bio-Microbics (MicroFAST 3.0, 4.5, and 9.0) (wq-wwists5-16w)
- Bio-Microbics (RetroFAST) (wq-wwists5-16e)
- Bio-Microbics (HighStrength FAST) (wq-wwists5-16k)
- Clarus Environmental (Fusion) (wq-wwists5-16l)
- Consolidated Treatment Systems (Enviro-Guard) (wq-wwists5-16n)
- Consolidated Treatment Systems (Nayadic) (wq-wwists5-16o)
- Consolidated Treatment Systems (Multi-Flo) (wq-wwists5-16m)
- Hoot Systems (Hoot H-Series) (wq-wwists5-16h)
- Norweco (Singular 960 and TNT) (wq-wwists16x)
- Orenco Systems (AdvanTex) (wq-wwists5-16c)
- Single Pass Sand Filter (wq-wwists5-16i)
- Recirculating Sand Filter (wq-wwists5-16u)
- Holding Tanks (wq-wwists5-16j)
- System Remediation (wq-wwists5-16v)
- Temporary Septage Storage Operating Permit
Remediation of subsurface sewage treatment systems
Guidance on the use of remediation practices for Subsurface Sewage Treatment Systems. This document was developed with input from the SSTS Product Registration Technical Advisory Panel (TAP). Direct comments and questions to Cody Robinson.
Distribution media products not currently registered but used before 2008 rule change
Guidance for local SSTS permitting authorities to determine the size (square footage) of gravelless pipe for existing compliant septic systems when a system expansion is planned.
Gravelless pipe is not currently a registered distribution media product. Prior to 2008, gravelless pipe was included in Minnesota Rules Chapter 7080. Now, treatment and distribution media products are not included in the rules. These products are now subject to a registration process. Once a product is registered, it is allowed to be installed in Minnesota.
The manufacturer of gravelless pipe has not submitted an application to the MPCA for registration of their product. For existing systems, gravelless pipe can continue to be used. However, the installation of new gravelless pipe is not allowed.
Sizing of gravelless pipe for existing systems. There is no known data supporting the claim that gravelless pipe can be sized at 3 square feet (3 ft2) for each lineal foot of pipe. Prior to 2008, gravelless pipe was typically 8 to 12 inches wide and sized at three-to-one (3:1) or at 3 ft2 per lineal foot of 12-inch gravelless pipe.
MPCA recommendation for existing compliant systems undergoing an expansion. The sizing of an existing gravelless pipe, when determining the extent of a system expansion, is recommended to be sized at 1 square foot (1 ft2) of infiltrative surface for each lineal foot of 12-inch wide pipe. This is a one-to-one (1:1) sizing recommendation for all existing gravelless pipe when an expansion to an existing compliant system is under consideration. For existing 8-inch gravelless pipe, the pipe should be sized at 0.66 ft2 of infiltrative surface for each lineal foot of 8-inch-wide pipe.
SSTS treatment products and distribution media are initially registered by the MPCA for up to three years. This page provides information related to the renewal of SSTS products after the initial period of product registration.
Forms for treatment and distribution products
- Proprietary Distribution Products Application for Registration - Subsurface Sewage Treatment System - Application form for initial product registration and product renewal for proprietary SSTS distribution media products in Minnesota.
- Proprietary Treatment Products Application for Registration - Application form for initial product registration and product renewal for proprietary SSTS treatment products in Minnesota.
- Product Registration Renewal Verification Affidavit - This affidavit needs to be completed by each manufacturer seeking to renew the registration of their proprietary product every three years.
- Wastewater Treatment and Dispersal Operating Permit Template - A template available to local units of government in developing operating permits.
Technical advisory panel
The Technical Advisory Panel (TAP) was formed as an adjunct committee to the SSTS State Advisory Committee in June 2008. The purpose of the committee is to provide technical input and recommendations to the MPCA on the Product Registration Process and associated outcomes.
Contacts for more information: