(c) Pumps are not self-priming, and the priming connection is made to
unsafe water supplies.
Openings around drawdown gage not properly sealed.
(e) Webbing at base of pump not drilled or slotted to permit drainage of
Leakage of contaminated oil I from shaft bearings into water.
(g) Intake or air compressor for airlift system not properly protected by
fiIters or hoods.
Water-receiving tank for airlift system not properly covered.
Operation. Failure to disinfect pumps and piping after opening for
d. Distribution System.
(a) Water and sewer pipe are laid in the same trench.
(b) Water and sewer pipe crossings not properly installed to prevent
contamination of the water.
Underwater crossings not properly protected.
(a) Hydrant drains connected to the sanitary sewers.
System constructed of piping of substandard materials.
Sewer flush tanks connected to the water supply.
(d) New piping installed without proper disinfection.
Cooling water returned to the system.
Cross connections to unsafe water supplies.
(g) Improperly designed plumbing fixtures that may permit
backsiphonage connected to the system.