The invention provides a method for measuring in-situ simulated
water quality in a
pipe network under a
water source switching condition. The method comprises the following steps: through separation treatment to a selected
pipe section of a
water supply system, an in-situ test
pipe section, used for testing, of the
water supply system is obtained, then testing is performed on the in-situ test pipe section, and detection is performed on
water quality of each of local water of the
water supply system and to-be-switched replacement water used for replacing the local water, so that a result about change of a
water quality parameter under
water source switching is obtained. According to the method provided by the invention, part of pipe sections are separated on an existing pipe, and test pipes do not need to be digged out completely, so that excavation
workload is reduced, improvement cost is low, pipe sections in the excavation-limited area can be still tested, movement of the pipe sections is avoided, influence on existing physical, chemical and microbiological systems in the pipe is small, and obtained
test data can fully simulate the situation about change of water quality in the existing pipe under the
water source switching condition, which has very important guiding significance in stability of water quality in the water supply pipe network under the predicted water source switching condition.