Municipal wastewater treatment plant, Ontario
Supplied Class I Division 1 explosion-proof disconnects and enclosures for a digester-gas blower upgrade on a multi-contract plant rehabilitation.
Industries served
Hazardous-Location Equipment for Water & Wastewater Treatment
Class I equipment for digester gas, headworks and biosolids — where methane and H₂S set the hazard.
Ex Solutions supplies CSA-certified Class I, Division 1 and Division 2 explosion-proof equipment for municipal and industrial water and wastewater plants — digester-gas systems, headworks, blower buildings and lift stations — where methane and hydrogen sulphide create the hazardous area.
The challenge
Wastewater plants generate methane and hydrogen sulphide (H₂S) in digesters, headworks and wet wells, making those areas Class I hazardous locations. Equipment must be explosion-proof, corrosion-resistant against a chemically aggressive atmosphere, and often integrated into custom control panels for blowers, compressors and pumps.
What we supply
- Class I Division 1 & 2 explosion-proof enclosures and instrument housings
- Custom hazardous-location local control panels (LCPs) built to your drawing
- Explosion-proof disconnects, control stations and breaker panels
- Corrosion-resistant explosion-proof LED lighting for headworks and galleries
- Certified cable glands, seals and fittings for classified-zone boundaries
Recent projects
Work we’ve delivered in this sector
Anonymized for confidentiality — real scope, real scale.
Digester-gas compressor building
Specified 19 Class I Division 1 local control panels on modified explosion-proof enclosures with custom operators, disconnects and breakers for a compressor project.
Wastewater treatment is quietly one of the most demanding hazardous-location markets. Anaerobic digesters make methane; sewage makes hydrogen sulphide (H₂S). Both are flammable, so digesters, headworks, blower buildings and wet wells are Class I areas — and the atmosphere is corrosive on top of being explosive.
Equipment that survives the atmosphere
We supply Class I Division 1 and Division 2 explosion-proof enclosures, corrosion-resistant LED lighting for headworks and galleries, disconnects and control stations, and the certified glands and seals that keep each classified-zone boundary compliant.
Panels built to the drawing
A lot of wastewater work is control-panel work: digester-gas compressors, blowers and pumps need hazardous-location local control panels. We supply modified explosion-proof enclosures configured as LCPs — operators, disconnects and breakers mounted to your drawing — so the panel lands ready to install.
Zone classification and equipment selection must be confirmed with your AHJ and a qualified person (QPS) against the Canadian Electrical Code.
Common questions
- Why is a wastewater plant a hazardous location?
- Anaerobic digestion produces methane, and sewage produces hydrogen sulphide — both flammable and both making digesters, headworks and wet wells Class I areas. A qualified person classifies each zone as Division 1 or Division 2 per CEC Section 18, and equipment is selected to match.
- Can you build the control panels, not just supply the boxes?
- Yes. We supply modified hazardous-location enclosures configured as local control panels — drilled, mounted, with operators, disconnects and breakers per your drawing — so the panel arrives ready for the classified area.
Have a Water & Wastewater project?
Send us your line list, spec, or drawing. We’ll quote the certified equipment and cross-reference anything you can’t find.