Operators of small water systems do it all – O & M, management, sampling, customer service, everything. This field guide may be the handiest book ever written for these unsung heroes of public health protection. It provides information and data needed for operating small drinking water and wastewater treatment facilities: chemicals and feeds, monitoring, water distribution, equipment maintenance, safety, pumps, meters, pipes, installation, water wells, relevant math and chemical equations, water quality regulations, wastewater collection, and much more. Invaluable!