Utility Billing

Friday, October 9, 2026: The City of Oshkosh is actively addressing unauthorized access to utility billing information involving our third-party utility billing vendors, AquaHawk and InvoiceCloud. The incident resulted in unauthorized access to select utility customers' account information, including account numbers, customer names, email addresses, and invoice numbers. No social security numbers, driver's license or state identification numbers, financial account information, credit or debit card numbers, security codes, or passwords were accessed. Impacted customers have been notified by email.

InvoiceCloud took immediate action to disable the compromised access key, preventing further access to customer information. The City has a dedicated team actively monitoring the situation and working closely with both vendors to enhance security measures and prevent future unauthorized access. Protecting our utility customers’ information remains a top priority.

No actions or changes to your utility account are required at this time. However, we encourage customers to remain alert for potential scam or phishing emails. Be cautious of unexpected messages requesting personal or payment information, and avoid clicking suspicious links or attachments.

Utility billing and payment services remain available. Customers can continue making payments online or by calling 888-412-1013.

The City will continue to monitor the situation and provide additional updates as necessary. If you have questions or concerns, please contact us at 920-236-5005 or utilitybill@oshkoshwi.gov.