Coliform index: A rating of the purity of water based on a count of coliform bacteria.
Collector sewers: Pipes to collect and carry wastewater from individual sources to an interceptor sewer that will carry it to a treatment facility.
coliform index A rating of the purity of water based on the count of fecal bacteria.
coliform levels Numbers referring to the density of coliform bacteria in water bodies.
 See also: Waste, Exposure, Environment, Filtration, Flow rate
  
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