About Us

STELTEC designs and manufactures precision control systems for municipal and industrial water / waste water treatment plants.  

We also carry submersible sensor systems, sensor wash systems and chemicals to support both our proprietary systems and legacy StrantrolĀ® equipment.

Our Advantages

Popular Info

Water & Waste Water 

Control Systems

Control.  Our proprietary NTL Control Logic reacts without over-reacting.  It's the brains behind our controllers.

Water or Waste Water.  Municipal or Industrial.  From 250,000 to 1B gallons per day. Whatever your application, StelTec ORP/pH Control Systems can provide precision water chemistry control to help keep you in compliance, while using less chemical.


Strantrol is a registered trademark of Siemens.

Expertise and experience combined to build cutting-edge products.

Support.  We are experts in our industry and stand behind our products.  Startups, troubleshooting, repairs, accessories, consumables... we do it all.  

orp meter
ph controller
orp probe
ph monitor
ph probes
orp controller
redox probe
orp measurement
ph orp
orp analyze


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P.O. Box 318, Towanda, IL 61776 | 815-315-3851

Precision Control Systems