How much water-line capacity does a splash pad need?

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A typical 2,500 sq ft splash pad needs a 2-inch domestic water service capable of 50-150 GPM at 60-80 PSI. Larger flagship pads with 50+ jets may need 4-inch service at 200-300 GPM. The civil engineer's hydraulic analysis confirms whether the existing main can deliver it.

Splash pad water demand depends on jet count, choreography, and whether the system is flow-through or recirculating. A typical 2,500-square-foot neighborhood pad with 25-35 features running standard sequences needs 50-150 GPM (gallons per minute) of inflow at 60-80 PSI working pressure. Flagship pads with 50-80 features can demand 200-300 GPM. Most installations require a 2-inch domestic water service tap; larger pads need 3-inch or 4-inch. The civil engineer runs a hydraulic analysis on the existing water main to confirm static and residual pressure can sustain peak demand without dropping below code minimums for adjacent buildings or fire flow. If the main is undersized, options include upsizing the service tap (typical cost $15K-75K) or adding a booster pump skid ($25K-60K). Recirculating systems reduce inflow demand 80-90% but add a treatment vault. Always verify capacity before sizing the equipment.