Company Directory
Office Hours:
Monday thru Friday, 8:30am to 4:30pm
(except holidays)
If you ever need to get in touch with someone from our different departments, this list should help you.
Customer Support
- For all inquiries regarding bill payments, collections, billing, meter readings, moving, rental water heater and general information.
- Dial 519-631-5550 to contact one of our Customer Support personnel.
- contact@stesi.ca
Human Resources
Operations Department
- Rental Water Heater Repairs, Streetlight Outages, Sentinel Lights
Call (519) 631-5550 ext. 244
Engineering Department
- (519) 631-5550 ext. 247 or 235
Purchasing and Stores
Privacy Policy
Emergencies -- After Hours -- Call (519) 631-0311