ReWater Systems, founded in 1990, specializes in providing legal, long-lasting, and cost-effective greywater irrigation systems to help meet California's water needs. They lead the greywater reuse industry with decades of experience and innovation, offering systems that use rain and other benign forms of water. ReWater's systems are designed to automatically back up with city water and/or rain, ensuring landscapes are fully watered even on low greywater production days. The company's founder, Stephen Bilson, has been instrumental in legalizing greywater irrigation and has worked on a wide range of projects from residential to commercial, incorporating rain as a primary water source in some systems.