Summer Sale! Use code “flow2026” for 20% off all summer classes through August.
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Protected: (Late Payment) 2026 Maine Wastewater Operator Certification Renewal
$225.00 -
June 23, 2026
Activated Sludge: Filamentous Organisms (26S-ETC103) (3 TCHs)
June 23, 2026
$80.00 -
Basic Municipal Wastewater Treatment (26S-SP003) (20 TCHs)
$0.00 -
July 14, 2026
Belt Filter Press and Centrifuge O&M (26S-ETC102) (1.5 TCHs)
July 14, 2026
$40.00 -
June 24, 2026
Biology of the Activated Sludge Process: Bacteria (26S-ETC104) (3 TCHs)
June 24, 2026
$80.00 -
August 13, 2026
Emergency Preparedness for Water and Wastewater Utilities (26S-ETC005)(3 TCHs)
August 13, 2026
$80.00 -
NEW! TR-16 Guides for the Design of Wastewater Treatment Works 2026 Edition
Price range: $95.00 through $200.00 -
September 16, 2026
Reimagining Residuals Part Five: Hydrothermal Liquefaction & Super Critical Water Oxidation (26S-ETC110) (1.5 TCHs)
September 16, 2026
$40.00 -
August 26, 2026
Reimagining Residuals Part Four: Incineration, Pyrolysis, & Gasification (26S-ETC109) (1.5 TCHs)
August 26, 2026
$40.00 -
July 15, 2026
Reimagining Residuals Part One: Dewatering Technologies (26S-ETC106) (1.5 TCHs)
July 15, 2026
$40.00 -
October 7, 2026
Reimagining Residuals Part Six: Embryonic Stage Technologies (26F-ETC113) (1.5 TCHs)
October 7, 2026
$40.00 -
August 12, 2026
Reimagining Residuals Part Three: Digestion Technologies (26S-ETC108) (1.5 TCHs)
August 12, 2026
$40.00 -
July 29, 2026
Reimagining Residuals Part Two: Drying Technologies (26S-ETC107) (1.5 TCHs)
July 29, 2026
$40.00 -
Wastewater Ethics (25F-SP002)(4 TCHs)
$125.00 -
July 8, 2026
Wastewater Laboratory Demo Day (26S-ETC004) (4 TCHs)
July 8, 2026
$105.00 -
June 25, 2026 – June 26, 2026
Wastewater Odor Production and Control (26S-ETC105) (6 TCH’s)
June 25, 2026
$160.00