CUPSS is a free asset management tool for small drinking water and wastewater utilities. It is quite simplistic and not customizable, but the price is right...
http://www.epa.gov/cupss/http://www.epa.gov/cupss/
The 2.5 ft/s specified in AWWA C651 is intended to remove accumulated sediment and debris from a newly installed or repaired water main. This velocity could also be applied to hydrant flushing, where the goal is the same.
However, the design of a water main should not be based on a minimum...
I agree that accumulation of air in the line should not prevent water from flowing from the tap as long as adequate pressure exists.
Protecting the equipment from vandalism should be considered, but placing the valve in a vault may create a potential cross connection. Ensure that the discharge...
Monterey continues smothering goose eggs with oil
The Associated Press
Article Last Updated: 06/05/2007 11:04:17 AM PDT
MONTEREY, Calif.—In an effort to eliminate bird droppings, the city is smothering goose eggs with vegetable oil.
The U.S. Fish and Wildlife Service has permitted the city to...
To alleviate the media loss concern, the following backwash sequence may be used:
-Close filter influent valve
-Allow filter to drain to below the washwater trough
-Close filter effluent valve
-Run blowers to agitate media without backwashing filter
-Shut off blowers as filter effluent valve is...
Is an air relief valve necessary on pressure filters served by wells with submersible pumps? Since the check valve for the submersible pump maintains pressure on all of the piping above the static water level, it seems unlikely that air could be introduced this way.
Will gases come out of...