Urban slums in Kampala, Uganda face significant challenges related to wastewater management, leading to poor water quality and increased disease transmission. Randomized controlled trial with pre- and post-intervention assessments of water samples from treated and untreated areas, along with surveys to assess health outcomes among residents. Water quality improved significantly in treated areas (p < 0. 05), with a reduction in E. coli levels by an average of 85% compared to untreated sites. No statistically significant difference was observed in reported disease incidence between intervention and control groups. While wastewater treatment systems showed promise for water quality improvement, their impact on disease prevention within the community remains inconclusive. Further research is needed to evaluate long-term effects and potential synergies with other public health interventions. Treatment effect was estimated with logit (pᵢ) =₀+^ Xᵢ, and uncertainty reported using confidence-interval based inference.
Musoke et al. (Tue,) studied this question.