A detection system is provided for a distributed water infrastructure to determine a human health or lifestyle state from detected water usage patterns. The system receives signals indicative of water usage from at least one sensor upstream of a plurality of appliances, and determines from the signals a current water usage pattern. The system accesses a database of a plurality of stored water usage patterns, associated with a human health or lifestyle state, compares the pattern with stored water usage patterns and, based on the comparison, identifies a human health or lifestyle condition reflected by the current water usage pattern.