| 129 | Texas Waste Water Treatment Ch#05 Preliminary & Primary Treatment | 2024-01-17 | 0 |
| 128 | Texas Waste Water Treatment Ch#01 Introduction | 2024-01-16 | 0 |
| 119 | Texas Waste Water Treatment Final Exam Review | 2024-02-23 | 0 |
| 116 | Texas Basic Waste Water Operations Final Exam Review | 2023-11-09 | 0 |
| 108 | Texas Waste Water Treatment Ch#07 Suspended Growth Systems (ponds) | 2024-01-17 | 0 |
| 104 | Texas Waste Water Treatment Ch#03 Composition and Characteristics | 2024-01-16 | 0 |
| 92 | Texas Waste Water Treatment Ch#04 Industrial Waste Monitoring | 2024-01-17 | 0 |
| 89 | Texas Waste Water Treatment Ch#02 State Requirements | 2024-01-16 | 0 |
| 89 | Texas Waste Water Treatment Ch#08 Activated Sludge Process | 2024-01-17 | 0 |
| 84 | Texas Waste Water Treatment Ch#09 Fixed Film Systems | 2024-01-17 | 0 |
| 79 | Texas Waste Water Treatment Ch#06 Secondary Biological Treatment | 2024-01-17 | 0 |
| 63 | Texas Waste Water Treatment #11 Sludge Digestion Dewatering & Disposal | 2024-01-17 | 0 |
| 61 | Texas Basic Waste Water Operations Ch#01 Treatment Goals | 2023-09-07 | 0 |
| 58 | Texas Waste Water Treatment Ch#10 Advanced Treatment Processes | 2024-01-17 | 0 |
| 54 | Texas Waste Water Treatment #13 Application of Lab Ctrl Determinations | 2024-01-17 | 0 |
| 53 | Texas Waste Water Treatment Ch#12 Chlorination and Disinfection | 2024-01-17 | 0 |
| 49 | Texas Basic Waste Water Operations Ch#08 Activated Sludge Process | 2023-09-29 | 0 |
| 47 | Texas Basic Waste Water Operations Ch#02 The Operator and The Law | 2023-09-08 | 0 |
| 40 | Texas Waste Water Treatment Ch#14 Records and Safety Practices | 2024-01-17 | 0 |
| 38 | Basic Electricity Module #1 Fundamentals of Electricity | 2025-04-14 | 0 |
| 29 | Texas Basic Waste Water Operations Ch#06 Prelim Treatment & Flow Meas. | 2023-09-27 | 0 |
| 28 | Texas Basic Waste Water Operations Ch#03 Waste Water Characteristics | 2024-12-20 | 0 |
| 27 | Texas Basic Waste Water Operations Ch#09 Fixed-Film Treatment | 2023-09-29 | 0 |
| 26 | Texas Basic Waste Water Operations Ch#05 The Collection System | 2023-09-26 | 0 |
| 23 | Texas Basic Waste Water Operations Ch#10 Stabilization Ponds | 2023-10-03 | 0 |
| 21 | Texas Basic Waste Water Operations Ch#13 Safety | 2023-11-02 | 0 |
| 19 | Texas Basic Waste Water Operations Ch#07 Sedimentation | 2023-09-28 | 0 |
| 18 | Texas Waste Water Treatment Ch#15.1 Water Composition | 2024-01-17 | 0 |
| 17 | Texas Basic Waste Water Operations Ch#11 Sludge Processing | 2023-10-18 | 0 |
| 16 | Texas Basic Waste Water Operations Ch#04 Domestic Waste Pretreatment | 2023-09-11 | 0 |
| 14 | Texas Basic Waste Water Operations Ch#12 Disinfection | 2023-11-02 | 0 |
| 14 | Texas Waste Water Treatment Ch#15.7 Sludge Digestion | 2024-01-17 | 0 |
| 13 | Texas Waste Water Treatment Ch#15.2 Primary Clarifier | 2024-01-17 | 0 |
| 13 | Texas Waste Water Treatment Ch#15.3 Pond Problems | 2024-01-17 | 0 |
| 12 | Texas Waste Water Treatment Ch#15.6 Chemical Problems | 2024-01-17 | 0 |
| 9 | Texas Waste Water Treatment Ch#15.4 Activated Sludge | 2024-01-17 | 0 |
| 6 | Texas Waste Water Treatment Ch#15.8 Pump Problems | 2024-01-17 | 0 |
| 4 | Texas Waste Water Treatment Ch#15.5 Fixed Film | 2024-01-17 | 0 |
