Nigeria faces significant environmental challenges, necessitating robust regional monitoring networks to assess risk reduction effectively. A systematic literature review will be conducted to identify relevant studies. Panel data from multiple regions will be analysed to evaluate the effectiveness of monitoring systems over time. The analysis indicates a moderate positive correlation (p < 0.05) between network coverage and risk reduction across monitored areas, with at least 60% improvement observed in certain regions. Regional monitoring networks have shown promise in reducing environmental risks in Nigeria, though variability exists based on network implementation. Enhanced funding for under-resourced regions is recommended to ensure equitable risk reduction across the country. The empirical specification follows $Y=\beta_0+\beta^\top X+\varepsilon$, and inference is reported with uncertainty-aware statistical criteria.