St. Charles County emergency dispatchers rerouted 911 calls to alternate phone numbers Wednesday night after the county experienced countywide issues with its 911 service. Dispatch continued receiving 911 calls throughout the disruption, and callers could still reach emergency operators, but county officials pushed out a backup number for residents to use if their calls to 911 didn't go through.
As reported by KSDK, St. Charles County provided 636-949-1845 as an alternate number for county police while the service issue was being worked out. County officials said they planned to update the public once the problem was resolved, though the station's report did not specify how long the rerouting remained in effect or what triggered it.
A County Where Nearly Every Call Comes From a Cell Phone
The timing matters because St. Charles County dispatch is overwhelmingly a wireless operation. Wireless calls account for 85% to 87% of all incoming 911 traffic in the county, according to monthly agency statistics reviewed by St. Charles County, with landline calls making up the remaining 13% to 15%. That imbalance means any disruption in carrier-level call routing or a hardware issue on the county's end can force dispatchers into manual rerouting protocols just to keep emergency calls flowing to backup lines.
The county's Department of Emergency Communications is not a small operation. It employs 44 full-time dispatchers and 10 administrative staff, and it handles roughly 115,000 law enforcement calls and 55,000 fire and EMS calls every year across six municipal and county public safety answering points. The agency also manages emergency dispatching for the St. Charles County Ambulance District, the largest ambulance district in Missouri, covering 592 square miles and more than 405,000 residents.
Built-In Backups, and a Precedent From 2020
The county's 911 infrastructure was designed with redundancy in mind. St. Charles County implemented its Next Generation 911 phone system in November 2015, built on two cloud-based remote host locations meant to provide backup and maintain call routing if part of the system fails. Dispatch operations also run out of a $24 million, 30,000-square-foot Emergency Operations Center in O'Fallon that opened in 2018 and was engineered to withstand EF-4 tornadoes and operate without off-site utilities for three days.
Wednesday's disruption is not the first time the county has had to reroute emergency calls. St. Charles County experienced a major countywide 911 phone outage in October 2020 that lasted nearly four hours before technicians restored service, according to a report at the time by KSDK. During that earlier outage, residents were similarly instructed to contact local non-emergency police lines while technicians worked the problem.
Federal Rules Now Require Faster Outage Notice
Under Federal Communications Commission rules that took effect in April 2025, voice service providers and originating 911 service providers must notify affected public safety answering points within 30 minutes of discovering a 911-impacting outage. It remains unclear whether an originating service provider filed such a notification with St. Charles County's dispatch center in connection with Wednesday's issue, and whether the root cause was a local hardware fault or a problem originating with a regional telecommunications carrier has not been confirmed.
The disruption also arrives against a backdrop of shifting funding for county emergency services. The St. Charles County Council voted in August to eliminate the county's personal property tax rate, a move that voluntarily gave up an estimated $660,000 in annual revenue previously allocated to the Dispatch and Alarm Fund supporting county 911 operations. County officials said at the time the cut was intended to ease personal property tax burdens on residents.
St. Charles County Emergency Communications holds itself to an internal target of answering 95% of calls within 10 seconds, a tighter standard than the National Emergency Number Association's industry benchmark of answering 90% of calls within 15 seconds. County officials said they planned to update the public once Wednesday night's service issue was fully resolved.
