The department maintains the list below of TNI that have been listed for use in Indiana. Where applicable, a link for each technology is provided to the department standards for that technology. These standards are the basis for plan review, construction approvals, training, design and installation, and operation and maintenance (O&M), if applicable.
Information is grouped under four technology categories: "Components," "Secondary Treatment Units," "Soil Absorption Fields," and "Pretreatment Devices,"
Each listing includes the following:
- Manufacturer information (listed alphabetically by manufacturer's name);
- The name of the technology;
- Its status: general approval, conditional approval, and project-by-project approval;
- Date of approval;
- Description of the technology;
- Brief comments regarding the approval; and
A link to the standards that are the basis for plan review, construction approvals, training, design and installation, and operation and maintenance (O&M), when applicable.
Components
Onsite system components are evaluated on a case-by-case basis. Components may include distribution boxes, distribution devices, siphons, pressure manifolds, etc.
Fluid Dynamic Siphons, Inc.
P.O. Box 88219
Steamboat Springs, CO 80488-2019
Web site: http://www.siphons.com/
| Technology: | Siphons. |
|---|---|
| Status: | Project-by-project approval. |
| Description: | Automatic dosing siphons for small flood dose systems, typically used in place of a pump on sites where electricity is not available. |
SeptiSurge
6328 East Collins Lane
Bloomington, IN 47408
Mr. Neil Zook
Email: neilzook@gmail.com
Web site: www.septisurge.com
| Technology: | Model 3A and Model 3B |
|---|---|
| Status: | Approved |
| Date: | 5/20/2013 |
| Description: | MOLDED distribution box with 6 or 8 ports. Equally distributes flow to each port. |
| Comments | SEE APPROVAL LETTER FOR ALL CONDITIONS: Subsurface gravity trench systems only; must be installed according to installation instructions. |
| Link to Approval Letter | Approval Letter |
Zoeller Company
3649 Cane Run Rd
Louisville, KY 40211-1961
Mr. Adrian France
Phone: (502) 778-2731
Fax: (502) 774-3624
Email: adrianf@zoeller.com
Web site: www.zoeller.com
| Technology: | Tru-Flow Splitter |
|---|---|
| Status: | Approved |
| Date: | 5/22/2006 |
| Description: | D-box of molded polypropylene with two parts: housing (basin/cover) and diverter. Bubble level allows for post installation adjustments to equalize flow to five lines. |
| Comments | SEE STANDARD FOR ALL CONDITIONS: Subsurface gravity trench systems only; must be installed according to Zoeller installation requirements. |
| Link to Standards | Standards |
Secondary Treatment Systems
The use of secondary treatment systems in Indiana must comply with the requirements in the Indiana Standards for Secondary Treatment Systems. Secondary treatment systems are reviewed by the department after submittal by a manufacturer or system integrator (SI).
To be listed, the manufacturer of a secondary treatment system must have on file with the department an application and documentation for review against the requirements of Indiana Standards for Secondary Treatment Systems. Such listing will have the status either “Project-by-project approval” or “Approved” A status of “Project-by-project approval” means that the department may approve the use of the technology on a case by case basis for individual projects under the parameters of Indiana Standards for Secondary Treatment Systems. But until a general approval is issued, each individual project must be reviewed by the department. When the department has finished a satisfactory review of the technology, the status will be changed from “project-by-project approval” to “Approved.” At that time, local health departments may issue permits for the use of that technology, provided such approvals meet all of the requirements of the standards for that technology as well as all of the requirements of 410 IAC 6-8.3.
For the repair, remediation or replacement of an existing residential onsite soil absorption field, the use of a secondary treatment unit must comply with the applicable requirements of 410 IAC 6-8.3.
BioMicrobics
16002 West 110th Street
Lenexa, KS 66219 USA
Website: http://www.biomicrobics.com/
Phone: (913)422-0707
Fax: (913)422-0808
| Technology: | MicroFAST 0.5, 500 gpd MicroFAST 0.75, 750 gpd MicroFAST 0.90, 900 gpd MicroFAST 1.50, 1500 gpd |
|---|---|
| Status: | Approved |
| Description: | A polyethylene aeration insert into a concrete tank using a fixed film extended aeration, activated sludge process. |
| Comments: | SEE APPROVAL LETTER FOR ALL CONDITIONS |
| Link to Approvals: |
| Technology: | HighStrengthFAST 1.0, 1000 gpd HighStrengthFAST 1.5, 1500 gpd HighStrengthFAST 3.0, 3000 gpd HighStrengthFAST 4.5, 4500 gpd HighStrengthFAST 9.0, 9000 gpd |
|---|---|
| Status: | Approved; but only for individual projects that are reviewed by IDOH |
| Description: | A polyethylene aeration insert into a concrete tank using a fixed film extended aeration, activated sludge process. |
| Comments: | SEE APPROVAL LETTER FOR ALL CONDITIONS |
| Link to Approvals: |
| Technology: | RetroFAST 0.15, 150 gpd RetroFAST 0.25, 250 gpd RetroFAST 0.375, 375 gpd |
|---|---|
| Status: | Project by Project approval only for projects reviewed by IDOH |
| Description: | A polyethylene aeration insert into a concrete tank using a fixed film extended aeration, activated sludge process. |
E-Z Treat, Inc.
PO Box 176
Haymarket, VA 20168 USA
Website: www.eztreat.net
Mike Stidham
Vice President
Phone: (703)408-2916
| Technology: |
| |
|---|---|---|
| Status: | Approved | |
| Description: | A polyethylene (600 and 750) or fiberglass (1200) pod operates as a fixed media, packed bed recirculating filter system. Treatment using a recirculating media filtration systems is generally an aerobic process and reaeration of the media, which occurs during the resting (non-dosing) periods is essential for proper treatment. | |
| Comments: | SEE APPROVAL LETTER FOR ALL CONDITIONS | |
| Link to Approvals: | Approval Letter |
| Technology: | E-Z Treat RSF #600, 600 gpd E-Z Treat RSF #1200, 1200 gpd E-Z Treat RSF #3L, 2426 gpd E-Z Treat RSF #4L, 3273 gpd E-Z Treat RSF #5L, 4119 gpd E-Z Treat RSF #6L, 5000 gpd | |
|---|---|---|
| Status: |
| |
| Description: | A polyethylene (600 & 750) or fiberglass (1200, 3L, 4L, 5L & 6L) pod operates as a fixed media, packed bed recirculating filter system. Treatment using a recirculating media filtration system is generally an aerobic process and reaeration of the media, which occurs during the resting (non-dosing) periods is essential for proper treatment. | |
| Comments: | SEE APPROVAL LETTER FOR ALL CONDITIONS Including BOD ratings and design calculations requirement | |
| Link to Approvals: | Approval Letter |
Fuji Clean USA, LLC
41-2 Greenwood Road
Brunswick, ME 04011
Website: www.fujicleanusa.com
Scott Samuelson
Managing Director
Phone: 207-406-2927
Email: Scott@FujiCleanUSA.com
| Technology: | CE Series 5, 450 gpd CE Series 7, 630 gpd CE Series 10, 900 gpd CEN Series 5, 450 gpd CEN Series 7, 630 gpd CEN Series 10, 900 gpd |
|---|---|
| Status: | Approved |
| Description: | Fiber-reinforced plastic tank using controlled, recirculating, circuitous flow train through anaerobic and aerobic cells for both biological digestion and mechanical filtration of the wastewater. |
| Comments: | SEE APPROVAL LETTER FOR ALL CONDITIONS
AND APPROVED MANUFACTURER MANUALS |
| Link to Approvals: |
Hydro-Action
AK Industries
Hydro-Action Mfg.
P.O. Box 640
Plymouth, IN 46563
Website: www.hydro-action.com
Steve Davis
Approvals Manager
Phone: (574)936-2542 x221
Fax: (574)936-2298
Email: steved@akindustries.com
| Technology: | Hydro-Action AP500, 500 gpd Hydro-Action AP600, 600 gpd Hydro-Action AP750, 750 gpd Hydro-Action AP1000, 1000 gpd Hydro-Action AP1500, 1500 gpd |
|---|---|
| Status: | Approved |
| Description: | Fiberglass tanks using extended aeration, activated sludge process. |
| Comments: | SEE APPROVAL LETTER FOR ALL CONDITIONS |
| Link to Approvals: | Approval Letter |
Jet, Inc.
750 Alpha Drive
Cleveland, OH 44143
Website: http://www.jetincorp.com/
Chris Mandich
National Sales Representative
Phone: (216) 538-8805
Email: cmandich@jetincorp.com
| Technology: | J-500, 500 gpd J-750, 750 gpd J-1000, 1000 gpd J-1250, 1250 gpd J-1500, 1500 gpd J-500-PLT, 500 gpd J-800-PLT, 800 gpd |
|---|---|
| Status: | Approved |
| Description: | Concrete or plastic tanks using a fixed film extended aeration, activated sludge process. |
| Comments: | SEE APPROVAL LETTER FOR ALL CONDITIONS |
| Link to Approvals: | Approval Letter |
Norweco
220 Republic Street
Norwalk, OH 44857
Website: www.norweco.com
Brett Wieber
Vice President, Treatment system Sales
Phone: (419)668-4471
Email: bwieber@norweco.com
| Technology: | Singulair Model 960-500, 500 gpd |
|---|---|
| Status: | Approved |
| Date: | Singulair & Singulair Green - 07/31/2012 Hydro-Kinetic 600 FEU – 02/21/14 |
| Description: | Concrete or polyethylene tanks using extended aeration, activated sludge process. |
| Comments: | SEE APPROVAL LETTERS FOR ALL CONDITIONS |
| Link to Approvals: | Singular Green Approval Letter Singular Approval Letter Hydro-Kinetic 600 FEU Approval Letter |
Quanics, Inc.
244 Old LaGrange Road
P.O. Box 1520
Crestwood, KY 40014
Website: www.quanics.net
Kevin Sherman
Phone: 502) 992-8215
Email: osmc2001@yahoo.com
| Technology: | AeroCell BioCoir |
|---|---|
| Status: | Project-by-project approval |
| Date: | 07/31/2012 |
| Description: | Aerocell is a recirculating treatment system using open cell foam media. BioCoir is a recirculating treatment system using recycled husks of coconuts. Both use fiberglass tanks. |
SludgeHammer Group, Ltd.
4772 US Hwy 131, Bldg, D
Petoskey, MI 49770
Website: www.sludgehammer.net
William Stoddard
President
Phone: (231) 348-5866
| Technology: | S-400, 400 gpd S-600, 600 gpd S-800, 800 gpd S-1000, 1000 gpd |
|---|---|
| Status: | Approved |
| Description: | Concete tanks using extended aeration, fixed-film process with bacterial inoculation to achieve treatment. |
| Comments: | SEE APPROVAL LETTER FOR ALL CONDITIONS |
| Link to Approvals: |
Zoeller Company
3649 Cane Run Rd
Louisville, KY 40211-1961
Mr. Adrian France
Phone: (502) 778-2731
Fax: (502) 774-3624
Email: adrianf@zoeller.com
Web site: www.zoeller.com
| Technology: | Recirculating Gravel Filter. |
|---|---|
| Status: | Project-by-project approval |
| Description: | Recirculating gravel filter with a bed of gravel to treat effluent with organisms that live on the media (80% of effluent is recirculated for additional treatment). Numerous sizes are available to accommodate a range of loading and site requirements. |
| Technology: | Z-Cell Wetland |
|---|---|
| Status: | Project-by-project approval. |
| Description: | The Z-Cell is a constructed wetland that manages the inflow of effluent using time dosing and uniform application to the bottom of the treatment cell. Effluent moves vertically through the horizontally-oriented plant root zone to provide treatment. |
Soil Absorption Fields
The department has general standards for some soil absorption field TNI. Other technologies are evaluated on a case-by-case basis. The use of these technologies in Indiana must comply with the requirements in the standards or approval. Soil absorption field technology for which the department has established general standards include:
Advanced Drainage Systems, Inc.
3300 Riverside Drive, P.O. Box 21307
Columbus, OH 43221
Phone: (800) 821-6710
Web site: http://www.ads-pipe.com/
| Technology: | Gravelless Pipe Technology |
|---|---|
| Status: | Approved |
| Date: | 11/28/1988 |
| Description: | 8" & 10" corrugated polyethylene plastic pipe with 3/8" or 1/2" diameter holes located 120 degrees from the top centerline and wrapped with Cariff non-woven polyester geotextile fabric. |
| Comments | SEE APPROVAL LETTER FOR ALL CONDITIONS: install in gravity trenches only; SAF size: 1 Lf of 10" dia. pipe in great. or eq. to 20" trench corr. to 1 Lf of 3' wide trench; 1 Lf of 8" dia. pipe in great. or eq. to 16" trench corr. to 1 Lf of 2' wide trench. |
| Link to Approval | Approval Letter |
Baughman Tile Company
8516 Township Road
Paulding, OH 45879
Lorie Thornell
| Technology: | Gravelless Pipe Technology |
|---|---|
| Status: | Approved |
| Date: | 8/6/2002 |
| Description: | 8" & 10" corrugated polyethylene plastic pipe with 3/8" or 1/2" diameter holes located 120 degrees from the top centerline and wrapped with Cariff non-woven polyester geotextile fabric. |
| Comments | SEE APPROVAL LETTER FOR ALL CONDITIONS: install in gravity trenches only; SAF size: 1 Lf of 10" dia. pipe in great. or eq. to 20" trench corr. to 1 Lf of 3' wide trench; 1 Lf of 8" dia. pipe in great. or eq. to 16" trench corr. to 1 Lf of 2' wide trench. |
| Link to Approval | Approval Letter |
Eljen Corporation
125 McKee Street
East Hartford, CT 06108
Mr. Jim King
Phone: (800) 444-1359
Fax: (860) 610-0427
Email: jking@eljen.com
Web site: http://www.eljen.com/
| Technology: | GSF (Geotextile Sand Filter) modules (A42 and B43) |
|---|---|
| Status: | Approved |
| Date: | 03/25/2014 |
| Description: | Cuspated plastic core units [B43 measuring 48" x 36" x 7" (L x W x H) and A42 measuring 48" x 24" x 7" (L x W x H)], Bio-Matt™ filter fabric internal to the unit, and geotextile fabric covering the unit, placed within a trench/bed of INDOT Spec. 23 sand and installed in a trench, single lateral bed, subsurface bed, above grade bed or an elevated sand mound SAF. |
| Comments | SEE STANDARD FOR ALL CONDITIONS: design and installation must comply with the Eljen GSF® Geotextile Sand Filter Indiana Design and Installation Manual, April 2020. |
| Link to Approval Letter & Standards | Approval Letter Standards Eljen GSF Indiana Design and Installation Manual, April 2020 |
Francesville Drainage Tile Corp.
P.O. Box 368
Francesville, IN 47946-0368
Mr. Christopher S. Overmyer
| Technology: | Gravelless Pipe Technology |
|---|---|
| Status: | Conditional approval |
| Date: | 6/27/2002 |
| Description: | 10" corrugated polyethylene plastic pipe with 3/8" diameter holes located 120 degrees from the top centerline and wrapped with Cariff non-woven polyester geotextile fabric. |
| Comments | SEE APPROVAL LETTER FOR ALL CONDITIONS: install in gravity trenches only; SAF size: 1 Lf of 10" dia. pipe in great. or eq. to 20" trench corr. to 1 Lf of 3' wide trench. |
| Link to Approval | Approval Letter |
Haviland Drainage Products Company
P.O. Box 97, 100 West Main Street
Haviland, OH 45851
Mr. Douglas A. Wenninger
Phone: (419) 622-4611
| Technology: | Graveless Pipe Technology, LPS 56/S |
|---|---|
| Status: | Approved |
| Date: | 7/3/2002 |
| Description: | LPS 56/S (low profile) gravelless system: 5 corrugated perforated pipes, each with outside diameter of 7.125 inches in 36 inch wide SAF trenches, with geotextile fabric, in lieu of aggregate. |
| Comments | SEE APPROVAL LETTER FOR ALL CONDITIONS: install in gravity trenches only; pipe must meet AASHTO M-252 Type SP; no size reduction. |
| Link to Approval | Approval Letter |
Infiltrator Water Technologies, LLC
4 Business Park Road
P.O. Box 768
Old Saybrook, CT 06475
Mr. David Lentz, P.E.
Phone: (860)577-7000
Email: dlentz@infiltratorsystems.net
Website: https://www.infiltratorwater.com/
| Technology: | Advanced Enviro-Septic (AES) System |
|---|---|
| Status: | Approved |
| Date: | 8/1/2019 |
| Description: | Advanced Enviro-Septic (AES) System: Corrugated, perforated, high density pipe with a Bio-Accelerator© fabric along its bottom which is surrounded by a layer of randomized plastic fibers and a sewn geo-textile fabric installed in a sand bed. |
| Comments | SEE APPROVAL LETTER AND STANDARDS FOR ALL CONDITIONS: design and installation must comply with Presby manual; designers, installers, and LHD staff must be trained and certified; Presby must notify IDOH of all certified persons and all installations. |
| Link to Standards | Approval LetterManual Standards |
| Technology: | Chamber |
|---|---|
| Status: | Approved |
| Date: | 1/6/2006 |
| Description: | Approved chamber products: Arc 24; Arc 36; Arc 36LP; BioDiffuser; Standard Bio 3 (22” wide); Quick4 Equalizer 36 (22” wide); Quick4 Standard & Quick4 Standard W; Quick4 Plus Standard; Quick4 Plus Standard Low Profile (LP); Quick4 Plus High Capacity. |
| Comments | SEE STANDARD FOR ALL CONDITIONS: Subsurface trench system only; H-10 load rating; up to 25% size reduction; reduction may not be combined with size reduction allowed for STUs. |
| Link to Standards | Standards |
| Technology: | EZFlow by Infiltrator |
|---|---|
| Status: | Approved |
| Date: | 1/26/2012 |
| Description: | Approved product: EZFlow EZ1203H. Synthetic aggregate product using expanded polystyrene (EPS) aggregate held together in cylindrical bundles with high strength polyethylene netting. |
| Comments | SEE STANDARD FOR ALL CONDITIONS: subsurface trench systems only; design and installation must comply with EZFlow manual and applicable department rules and standards. |
| Link to Approval Letter & Standards | Approval Letter Standards |
| Technology: | EZFlow by Infiltrator in Elevated Sand Mounds |
|---|---|
| Status: | Approved |
| Date: | 4/24/2019 |
| Description: | Approved product: Synthetic aggregate product using expanded polystyrene (EPS) aggregate held together in cylindrical bundles with high strength polyethylene netting. |
| Comments | SEE STANDARD FOR ALL CONDITIONS AND APPROVED MODELS: use as a stone aggregate substitute in residential and commercial Elevated Sand Mounds; design and installation must comply with EZFlow manual and applicable department rules and standards. |
| Link to Approval Letter, Manual & Standards |
| Technology: | Infiltrator ATL System |
|---|---|
| Status: | Approved |
| Date: | 8/30/2012 |
| Description: | Four inch diameter pipe surrounded by a large diameter synthetic aggregate and a small diameter synthetic aggregate covered with a fine geo-textile fabric installed in a sand bed. |
| Comments | SEE APPROVAL LETTER AND STANDARDS FOR ALL CONDITIONS: design and installation must comply with ATL manual; designers, installers, and LHD staff must be trained and certified; Infiltrator must notify IDOH of all certified persons and all installations. |
| Link to Approval Letter, Manual & Standards |
Prinsco, Inc.
1717 16th St. NE
Willmar, MN 56201
Mr. Judd Efinger
Phone: (435)727-9002
Email: judde@prinsco.com
Web site: https://www.prinsco.com/
| Technology: | Chamber |
|---|---|
| Status: | Approved |
| Date: | 9/22/2023 |
| Description: | Approved chamber product: Pro4/36 |
| Comments | SEE STANDARD FOR ALL CONDITIONS: Subsurface trench system only; H-10 load rating; up to 25% size reduction; reduction may not be combined with size reduction allowed for STUs. |
| Link to Standards |
| Technology: | Gravelless Pipe Technology |
|---|---|
| Status: | Approved |
| Date: | 6/3/2002 |
| Description: | Prinsco GLP Sock Pipe: 8" & 10" corrugated polyethylene plastic pipe with 3/8" or 1/2" diameter holes located 120 degrees from the top centerline and wrapped with GLP non-woven polypropylene geotextile fabric. |
| Comments | SEE APPROVAL LETTER FOR ALL CONDITIONS: install in gravity trenches only; SAF size: 1 Lf of 10" dia. pipe in great. or eq. to 20" trench corr. to 1 Lf of 3' wide trench; 1 Lf of 8" dia. pipe in great. or eq. to 16" trench corr. to 1 Lf of 2' wide trench. |
| Link to Approval | Approval Letter |
Pretreatment Devices
Pretreatment devices are typically installed upstream of the septic tank in an onsite system and are evaluated on a case-by-case basis.
Algaewheel, Inc.
1426 West 29th Street, Suite 206
Indianapolis, IN 46208
Mr. Chris Limcaco
Phone: (317) 989-2001
Fax: (317) 829-5902
Email: info@algaewheel.com
Web site: http://www.algaewheel.com/
| Technology: | BacPac Unit |
|---|---|
| Status: | Conditional approval |
| Date: | 3/10/2006 |
| Description: | Single pass pretreatment system in which algal colonies provide treatment and filtration. |
| Comments | SEE APPROVAL LETTER FOR ALL CONDITIONS: max. of 50 units (residential & commercial); pretreatment only; unit must be followed by septic tank and SAF that comply with 410 IAC 6-8.1 or 410 IAC 6-10. |
| Link to Approval | Approval Letter |
- Chambers and
- Subsurface drip systems: Indiana Standards for Subsurface Drip Systems.