Chlorinated water

Splash pads in recirculation mode maintain chlorine at pool-level concentrations (1–3 ppm typical). Single-pass pads use the lower chlorine residual already in city tap water (around 0.5–2 ppm). A strong chlorine smell at a splash pad is often a warning sign — it usually means chloramines (chlorine bonded with urine and sweat) are building up and the system is undertreating, not overtreating.