单语范例（未经PONS编辑处理）
Gravity and pumping effluent sewer systems both have advantages and disadvantages.
en.wikipedia.org There is no central sewer system, piped fresh water, and crime rates are high.
en.wikipedia.org The fiscal emergency designation came when the water and sewer fund were found to have deficits in excess of $2 million.
en.wikipedia.org Water and sewer service is provided by the town with their own water and sewer plant.
en.wikipedia.org Extensive proving work by the gas and water industries has demonstrated the feasibility of upsizing gas mains, water mains and sewers.
en.wikipedia.org