| 80.04.010 | Definitions. |
| 80.04.015 | Conduct of business subject to regulation -- Determination by commission. |
| 80.04.020 | Procedure before commission and courts. |
| 80.04.030 | Number of witnesses may be limited. |
| 80.04.040 | Witness fees and mileage. |
| 80.04.050 | Protection against self-incrimination. |
| 80.04.060 | Depositions -- Service of process. |
| 80.04.070 | Inspection of books, papers, and documents. |
| 80.04.075 | Manner of serving papers. |
| 80.04.080 | Annual reports. |
| 80.04.090 | Forms of records to be prescribed. |
| 80.04.095 | Protection of records containing commercial information. |
| 80.04.100 | Production of out-of-state books and records. |
| 80.04.110 | Complaints -- Hearings -- Water systems not meeting board of health standards -- Drinking water standards -- Nonmunicipal water systems audits. |
| 80.04.120 | Hearing -- Order -- Record. |
| 80.04.130 | Suspension of tariff change -- Mandatory measured telecommunications service -- Washington telephone assistance program service -- Effect of abandonment of electrical generation facility on which tax exemption for pollution control equipment is claimed. |
| 80.04.140 | Order requiring joint action. |
| 80.04.150 | Remunerative rates cannot be changed without approval. |
| 80.04.160 | Rules and regulations. |
| 80.04.170 | Review of orders. |
| 80.04.180 | Supersedeas -- Water companies seeking supersedeas. |
| 80.04.190 | Appellate review. |
| 80.04.200 | Rehearing before commission. |
| 80.04.210 | Commission may change orders. |
| 80.04.220 | Reparations. |
| 80.04.230 | Overcharges -- Refund. |
| 80.04.240 | Action in court on reparations and overcharges. |
| 80.04.250 | Valuation of public service property. |
| 80.04.260 | Summary proceedings. |
| 80.04.270 | Merchandise accounts to be kept separate. |
| 80.04.280 | Purchase and sale of stock by employees. |
| 80.04.290 | Sales of stock to employees and customers. |
| 80.04.300 | Budgets to be filed by companies -- Supplementary budgets. |
| 80.04.310 | Commission's control over expenditures. |
| 80.04.320 | Budget rules. |
| 80.04.330 | Effect of unauthorized expenditure -- Emergencies. |
| 80.04.350 | Depreciation and retirement accounts. |
| 80.04.360 | Earnings in excess of reasonable rate -- Consideration in fixing rates. |
| 80.04.380 | Penalties -- Violations by public service companies. |
| 80.04.385 | Penalties -- Violations by officers, agents, and employees of public service companies. |
| 80.04.387 | Penalties -- Violations by other corporations. |
| 80.04.390 | Penalties -- Violations by persons. |
| 80.04.400 | Actions to recover penalties -- Disposition of fines, penalties, and forfeitures. |
| 80.04.405 | Additional penalties -- Violations by public service companies and officers, agents, and employees thereof. |
| 80.04.410 | Orders and rules conclusive. |
| 80.04.420 | Intervention by commission where order or rule is involved. |
| 80.04.430 | Findings of commission prima facie correct. |
| 80.04.440 | Companies liable for damages. |
| 80.04.450 | Certified copies of orders, rules, etc. -- Evidentiary effect. |
| 80.04.460 | Investigation of accidents. |
| 80.04.470 | Commission to enforce public service laws -- Employees as peace officers. |
| 80.04.480 | Rights of action not released -- Penalties cumulative. |
| 80.04.500 | Application to municipal utilities. |
| 80.04.510 | Duties of attorney general. |
| 80.04.520 | Approval of lease of utility facilities. |
| 80.04.530 | Local exchange company that serves less than two percent of state's access lines -- Regulatory exemptions -- Reporting requirements. |
| 80.04.550 | Thermal energy -- Restrictions on authority of commission. |