| http://www.w3.org/ns/prov#value | - r, has been used for decades in agriculture, landscaping and by industrial plants.And for years, treated sewage, known as effluent, has been discharged into oceans and rivers, including the Mississippi and the Colorado, which supply drinking water for millions.But only about a dozen water agencies in the United States, and several more abroad, recycle treated sewage to replenish drinking water sup
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