Water treatment facilities in South Africa face challenges related to efficiency and reliability, which can impact water quality and availability for agricultural use. A randomized field trial will be conducted across five different regions, employing statistical analysis techniques including regression models to evaluate system performance and identify areas for improvement. The results indicate that by adjusting treatment parameters based on local conditions (e.g., water hardness), the facility in Region X improved its effluent quality from a baseline of 85% compliance to an enhanced level above 90%, with a standard deviation of ±2.5% among trials. The randomized field trial demonstrated that targeted adjustments can significantly improve the efficiency and effectiveness of water treatment facilities, contributing to better agricultural water supplies. Based on these findings, recommendations include implementing standardised operational protocols and conducting periodic maintenance checks across different regions to maintain optimal performance levels. Water Treatment Facilities, South Africa, Randomized Field Trial, Efficiency Enhancement The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.