California Water Service Group revenue for the last year amounted to 1.04 B USD, the most of which — 538.23 M USD — came from its highest performing source at the moment, Residential, the year earlier bringing 463.42 M USD. The greatest contribution to the revenue figure was made by United States — last year it brought California Water Service Group 1.04 B USD, and the year before that — 794.63 M USD.