The Problem
A community centre pool was losing 5cm/day. Facility manager faced a $15K drain-and-inspect plus 2 weeks of lost programming.
Detection Method
Acoustic listening identified leak at main drain fitting. Dye testing confirmed water escaping past the main drain gasket seal.
Results
Gasket replaced during single overnight closure. Pool never drained. Swim lessons resumed next morning. $15K saved, 2 weeks of programming preserved.