Search by provider name, city, service area, or state.
State utility hub
Browse the indexed community water systems in this state. Each profile brings the provider’s payment routes and household protection policies into a single, practical guide.
Public Water Authority
Service area: Washington, District of Columbia
Population: DC Water provides retail water and wastewater service to more than 700,000 District residents and approximately 27 million annual visitors. Its Blue Plains system also treats wastewater for approximately 1.8 million people in neighboring Maryland and Virginia jurisdictions; the retail population estimate here is the District customer base.
Public Water Authority
Service area: District of Columbia
Population: 632,323 people (EPA SDWIS active CWS PWS DC0000002)
Municipal Department
Service area: Washington
Population: 19,312 people (EPA SDWIS 2026Q2 estimate for DC0000004)
District of Columbia directory notes
This state hub brings together 3 indexed community water systems, from city departments and public authorities to investor-owned systems and smaller regional providers. A service area may cross municipal boundaries, so use the provider name and service address on your bill when choosing a profile.
The most important distinction is between a directory listing and an official account channel. Water Ledger provides a structured starting point; the utility’s own payment portal, published rate schedule, customer-service office, and mailed notice control your account. Compare the payment route, billing frequency, emergency number, and customer-protection notes before relying on a page for a time-sensitive decision.
If you are helping a household with a high bill, leak, or delinquency notice, open the utility profile and review the payment, shut-off, and leak-adjustment guides together. Keep the bill, account number, confirmation receipts, repair records, and notice dates available when speaking with the provider.