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State directory · dataset 2026.08
Browse 8 indexed systems and see how frequently the directory identified public payment, fee, leak, assistance, and emergency information. Coverage describes the research record—not utility performance.
South Dakota research snapshot
100%
Online portal identified
8 of 8
25%
Public fee detail
2 of 8
50%
Leak policy detail
4 of 8
25%
Assistance detail
2 of 8
25%
Emergency route
2 of 8
Municipal Department
Service area: Sioux Falls and approved outside-city service areas
Population: Approximately 200,000 residents in Sioux Falls and surrounding approved service areas; City audit materials report more than 70,000 water customers.
Municipal Department
Service area: Sioux Falls
Population: 216,462 people (EPA SDWIS active CWS PWS SD4600294)
Municipal Department
Service area: Rapid City
Population: 72,009 people (EPA SDWIS active CWS PWS SD4600406)
Municipal Department
Service area: Rapid City
Population: Approximately 72,009 residents in the queue estimate; the City reports more than 27,900 accounts billed for water, sewer and related municipal services.
Municipal Department
Service area: Aberdeen
Population: 27,989 people (EPA SDWA queue estimate for SD4600020)
Municipal Department
Service area: Brookings
Population: 23,377 people (EPA SDWIS 2026Q2 estimate for SD4600071)
Municipal Department
Service area: Watertown
Population: 23,230 people (EPA SDWIS 2026Q2 estimate for SD4600356)
Public Water Authority
Service area: Aberdeen
Population: 20,750 people (EPA SDWIS 2026Q2 estimate for SD4601089)
South Dakota directory notes
This state hub brings together 8 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. US Water Bill Pay 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.
