Environmentalists have attacked what they see as a compromise on energy in the deal reached at the Earth Summit on world sanitation.
They say firm targets on renewable energy have been dropped as part the deal.
Negotiators emphasised the importance of the breakthrough agreement to try to halve the two billion people living without sanitation and sewage by 2015.
But Mr Matt Phillips of Friends of the Earth said: "Sanitation is important but for sustainable development poor communities need clean, efficient energy. It is very disappointing to see renewables being abandoned at this stage in the deal".
World leaders at the Summit in South Africa have reached a compromise on the last details of the global plan to eradicate poverty and reverse environmental decline.
Negotiators resolved the last main sticking points in a 70-page action plan. Most of the items were geared to helping the world's poorest people without creating more pollution.
The agreed text includes a commitment to "urgently" increase the use of renewable energy sources but sets no deadlines. Developing countries had sided with the United States and Japan against including targets that the European Union sought.
The United States and oil-producing countries had resisted targets, arguing that concrete projects were more important than paper agreements.
The negotiators also called for a reduction in the number of people living without sanitation from two billion currently to one billion by 2015.
The trade agreements urged countries to reform subsidies that are environmentally harmful, such as those for the fishing industry that contribute to overcapacity.
AP