Generally Approved TL-3 Units

The following treatment units have been field tested in accordance with 12VAC5-613-70 and GMP 2016-03 (or predecessor) and are generally approved for use as Treatment Level 3 wastewater treatment units.  Below are the approval letter, report of field testing, technical drawings and O&M manuals for the units.  Designers are reminded that they must provide a site specific O&M manual covering ALL components of the system to comply with 12 VAC 5-613-150 for each installation. The site specific O&M manual for each system will be on file at the local health department and will provide O&M guidance that complies with the Regulations for Alternative Onsite Sewage Systems.

Brand Name




O&M Manual

Orenco Systems, Inc.

AX20 Pump Discharge Option 1.pdf

VA Test Data.pdf

AdvanTex OM advanced service and troubleshooting.pdf

AX20 Pump Discharge Option 2.pdf

AX25RT Approval Letter 1, 750 gpd

AX25RT Approval Letter 2, 750 gpd

AdvanTex OM start-up and routine maint.pdf

AX20 Single Pod Single Tank.pdf

VA Final Report.pdf

AX20 Single Pod Two Tank.pdf

AX20 Two Pod Two Tank.pdf

AX20RT Configurations

Ecological Tanks, Inc.

AS500 EZ TOPwithdischargefilter1.pdf

aquasafe engineering cert


VA Agreement

Old Dominion Engineering letter

NPDES Sampling…Ohio

9.23.13 Approval Letter

1.31.18 Approval Letter      (AS1000)

1.18.18 Request for Approval (AS1000)

Quanics, Inc.

VDH 1000 gpd BC system.pdf

Engineer’s Product Certification Statement and Evaluation.pdf


VDH 1000 gpd NSF certified BC.pdf

Manufacturer Agreement.pdf

VDH 200 gpd BC system.pdf

Bio-COIR Final Report

VDH 400 gpd BC system.pdf

VDH Approval Letter

VDH 500 gpd NSF certified BC system.pdf

VDH 650 gpd BC system.pdf

VDH 750 gpd NSF certified BC system.pdf

Approval Letter_7-13-10.pdf

Clearstream Operation and Maintenance Manual.pdf

Clearstream PE Certification Letter – 2009-11-05.pdf

Trinity River Authority Letter_5-17-2010.pdf

peyton analysis.pdf

Clearstream Records TRA Livingston TX ALL BOD-TSS.xls

Stats w MJD Mod Clearstream Records TRA Livingston TX ALL BOD-TSS.xls


Clearstream D – Approved 11/28/2018 Clearstream Wastewater Systems, Inc. Approval Letter


Clearstream D Unit TL3 Data Analysis (1)

Model D OM all configurations 2-24-2016

Premiere Tech

Attachment 1

Field Performance Assessment Ecoflo.pdf

Ecoflo O&M manual.pdf

Attachment 2

Copy of Appendix A Oct 112007.xls

Concrete Ecoflo.pdf

Attachment 3

Virginia monitoring Appendix B 2007.05.16.pdf

Fiberglass Ecoflo.pdf

Attachment 4

PTE dosing control unit.pdf

Ecoflo Reference Guide- includes ST-570P, STB-570P, and STB-570PR with PE tanks

PTE pumping unit.pdf

PTE time dosing unit.pdf

Model ST-650P, STB-650P, & STB-650PR Approval Letter 7-31-2012

EZ Treat Corporation

Tank Sizing

MOUA Approval Memo Approval Letter

EZ Treat O&M Manual

Product Brochure: MicroFAST®


Approval letter

Biomicrobics-Final-Report FAST-Installation-Manual

Technical Plans & Specs

MicroFAST Data Analysis Oct 2017 – Aug 2018 FAST-Owners-Manual
MicroFast-VA-Tank-Sizes MicroFAST VDH 2018-02-05 Spreadsheet 23 sites w dl fixed FAST-Service-Manual


Puraflo O&M.pdf

Copy of Puraflocalc.xls

Puraflo Owners Manual.pdf

Puraflo Final Report.pdf

Anua Treatment System Tracking Sheet

Puraflo Design Spreadsheet

*Perpetual disinfection is only necessary when the vertical separation (from the trench bottom or pad bottom to the soil limiting feature) is less than what is required for secondary or better effluent.