Water/Wastewater Maintenance

One of my colleagues teaches several courses related to the treatment of water through a local community college. One of those course is Maintenance of Water/Wastewater equipment. The book that has been used for years is; "Hands on Water/Wastewater Equipment Maintenance" by Don Renner. Unfortunately, this book is very dated. There are two volumes, with the most recent edition published in 2000. So, they are still relying on an almost 20 year old textbook.

 

Additionally, the book is not sold digitally. Each volume can run $150 or more. For every student in each class, they are looking at a $300+ fee just for textbooks. I'm looking for a less expensive, digital option. Does anyone have any suggestions?

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