Efficient monitoring of leakage in urban water supply pipelines is of paramount importance for conserving water resources and ensuring the safety of residential water use. Existing leakage detection methods mainly rely on a single type of signal. Due to the inherent limitations of single signals, they are either insensitive to the minor fluctuations caused by small leaks or susceptible to interference from normal pipeline operations, which cannot be resolved through identification methods alone. This study exploits the respective advantages of acoustic and pressure signals and establishes a leakage monitoring strategy based on fusion of acoustic-pressure signals, effectively addressing the issue of high false positives in acoustic signals and high false negatives in pressure signals. The proposed strategy was validated through in-situ leak simulation tests on a long-distance operational water supply pipeline, evaluating the detection effectiveness and discussing the identifiable distance for both types of fluid parameter signals. The results demonstrate that the proposed strategy reduces the false alarm rate by 6. 02% and the miss detection rate by 4. 57% . Keywords:water supply pipeline; internal pipeline parameters monitoring; ada