The WACC of California Water Service Group (CWT) is 6.9%.
| Range | Selected | |
| Cost of equity | 7.00% - 9.70% | 8.35% |
| Tax rate | 26.20% - 27.00% | 26.60% |
| Cost of debt | 4.00% - 5.10% | 4.55% |
| WACC | 5.8% - 7.9% | 6.9% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.68 | 0.87 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 7.00% | 9.70% |
| Tax rate | 26.20% | 27.00% |
| Debt/Equity ratio | 0.43 | 0.43 |
| Cost of debt | 4.00% | 5.10% |
| After-tax WACC | 5.8% | 7.9% |
| Selected WACC | 6.9% | |