Municipal Department
Waukesha Water Utility
Serving City of Waukesha municipal water and sewer service area
Population served
70,718 people (EPA SDWIS queue estimate for WI2680238)
State system code
FIPS 55
Billing frequency
Monthly billing for all customer classes is documented in Wisconsin DNR materials; the ACH form states that deductions occur on the 15th of the month the bill is due. Customers should follow the due date printed on the current bill.
Provider briefing
How this utility’s billing works
Waukesha Water Utility operates as a municipal department serving City of Waukesha municipal water and sewer service area. Customers should use the provider’s current account-specific bill and official customer-service instructions as the final authority for deadlines, balances, and service requests.
The published water-rate framework is described as PSC-regulated municipal tariff with fixed meter/readiness charges and volumetric water charges; Waukesha transitioned from groundwater to Lake Michigan water through the Great Water Alliance. A verified current 2026 residential tariff table was not exposed in the reviewed official pages, so exact blocks and meter charges are not reproduced here.. Bills are generated monthly billing for all customer classes is documented in wisconsin dnr materials; the ach form states that deductions occur on the 15th of the month the bill is due. customers should follow the due date printed on the current bill., and a typical residential cost reference is A dedicated this detail was not publicly posted. For a current 2026 official 5,000-7,000 gallon estimate. A Great Water Alliance FAQ reported approximately $95 per month for an average 4,000-gallon residential total water bill in 2022, but that historical figure is not treated as a 2026 rate estimate.. These descriptions are useful planning benchmarks; actual charges can change with meter size, usage, sewer averaging, local taxes, drought stages, or account-specific fees.
Wastewater and sewer calculation
Waukesha bills water and sewer through the combined Water Utility account. The reviewed official sources do not publish the current 2026 sewer formula or a winter-average calculation. Wisconsin PSC guidance states that sewer charges are not regulated by the PSC and that utilities may apply a written leak policy to water while retaining discretion over sewer adjustments.
Meter and infrastructure notes
Waukesha's verified 2023 Wisconsin DNR report documents monthly billing and a high-consumption audit that can send a postcard to customers who may have a leak. The reviewed official documents do not specify whether all customer meters are AMI/AMR or publish a fixed read route; the utility's billing portal and customer-service department provide account-specific usage information.
Emergency water support
Report a leak or water emergency
24-hour emergency number (262) 352-8020 for broken water mains, pipelines and similar emergencies, as published in utility contact references. General customer service is (262) 521-5272.
Official starting point
Choose the right next step
Reading this profile
A practical reference for City of Waukesha municipal water and sewer service area
Waukesha Water Utility is listed here as a municipal department. The profile separates account actions—such as paying a bill or requesting service—from explanatory material about rates, meters, wastewater, leaks, and delinquency.
Because utility rules can vary by account class, meter size, service address, billing date, and local ordinance, treat the published bill and current provider website as the final authority. Use this profile to locate the correct channel and prepare better questions for customer service.
If your issue is urgent, start with the provider’s emergency number or official payment route rather than waiting for an email response. Keep a written record of calls, confirmation numbers, notice dates, and documents you submit.