In terms of returns from investment, California Water Service Group has fallen short of achieving a 20% return on equity (ROE), recording 8.4% instead. Furthermore, its return on assets (ROA) of 3.5% is below the US Water Utilities industry of 3.6%, indicating California Water Service Group's are utilized less efficiently. And finally, its return on capital (ROC), which also accounts for California Water Service Group's debt level, has declined over the past 3 years from 4.5% to 4.2%. This correlates with an increase in debt holding, with debt-to-equity ratio rising from 86% to 134% over the past 5 years.