There are opportunities for financing sewage treatment systems sustainably, say UN marine scientists. Residents may be charged a fee. Another method is to market the water, nutrients and organic matter in treated sewage. Retaining or constructing wetlands may also be effective.
In fact, final treatment of industrial wastes is often most effective in preventing environmental degradation when it constitutes just one component of a broader approach, the experts point out.
There are opportunities for financing sewage treatment systems sustainably, say UN marine scientists.