The government encourages farmers to grow corn instead of rice to improve water quality.

政府鼓励农民种植玉米而非水稻，以改善水质。

youdao

They keep our air clean, reduce noise pollution, improve water quality and provide food and building materials.

他们保持我们的空气清洁，减少噪音污染，改善水质，提供食品和建筑材料。

youdao

Improve water quality flowing to Buffalo Bayou.

沿着水牛河改善了水质。

youdao

Trees can also improve water quality around farms by removing pollutants from soil and groundwater.

VOA: special.2009.09.08

Planting trees around poultry farms can improve air and water quality and relations with neighbors.

VOA: special.2009.09.08

With a new iPhone app, IBM hopes to change that and improve water quality and information about water supplies.

FORBES: IBM Launches iPhone App For Crowdsourcing Water Quality

The use of new clay technology is being used on the Norfolk Broads for the first time to reduce algae growth and improve water quality.

BBC: Norfolk Broads: Clay technology 'aids How Hill reserve'

"As a result of the work we are doing to improve water quality and hopefully, with better weather this summer, more people will have an opportunity to enjoy the clean water and fantastic beaches we have in Wales, " said Mr Roberts.

BBC: Whitesands Bay in Pembrokeshire