John Snow Questions (Elementary) 1. How old was John Snow when he began to work as an apprentice for Dr. Hardcastle? 2. How many people died in the 1831-1832 cholera epidemic in England? 3. Doctors believes that ____ were the cause of cholera but Dr. Snow believed that _____ were the cause of cholera.
A community gets its drinking water from a nearby lake. After many years, the company responsible for emptying the septic tanks in the community has shut down and a new company from out of town now empties the septic tanks. It would cost the company more money to haul the waste to their plant so the company has been dumping their trucks in a pit near the lake.
In March 2001, the solids contact unit in the surface water treatment plant was emptied and all the sludge removed from the bottom in order to inspect, clean and repair a crack that had formed in the cement floor. This type of repair should normally be done in February, so that the spring breakup and runoff will not affect the system.