Sutro (sold to Sani Marc) Employee Directory

Computers and Electronics ManufacturingCalifornia, United States2-10 Employees

Sutro has developed an IoT-based water quality monitoring system that includes a patent-pending sensor. The device is placed in a body of water to collect data and deliver guidance on how to manage it. The initial focus is the domestic market for residential pools and spas in the United States, a roughly $13 billion annual segment, with plans to expand into the broader global water market. The typical maintenance burden is substantial, with estimates of more than 40 hours and over $1,500 annually; Sutro's solution is priced at about $300. Based in San Francisco, California, Sutro—listed as having been sold to Sani Marc—operates in the computers and electronics manufacturing space, focusing on consumer water-management technology. A notable recent development is a 2025 partnership with Sundance Spas to introduce Spa Sense for hot tubs.

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