sustainabilityenergydrainageplumbing
How much water does splash pad reuse for irrigation save?
Quick answer
Reusing splash pad water for adjacent landscape irrigation captures 30-70% of total annual consumption that would otherwise drain to sewer. Typical municipal pad saves 200,000-500,000 gallons per year. Payback on the additional plumbing runs 5-10 years through reduced water bills.
Splash pad water reuse for irrigation is one of the most impactful sustainability strategies, particularly for flow-through pads in drought states. The pad water — already treated potable, with low chemical load after dechlorination — irrigates adjacent landscaped areas, lawns, or storm-management bioswales through subsurface drip irrigation. Captured volumes: 30-70% of annual pad throughput, typically 200,000-500,000 gallons for a municipal pad. Cost: $10K-$50K extra at install for dechlorination, holding tank, distribution piping (purple-pipe code), and controls. Payback runs 5-10 years through reduced potable water purchases and irrigation costs combined. Permitting requires a state graywater or reclaimed-water permit and ongoing water-quality testing. Dual benefit: meets state water-conservation requirements and produces measurable ESG metrics for sustainability reporting. Dogged by cost-conscious decision-makers but increasingly required by code in California, Arizona, and Nevada.