Not If But When: Planning for SCADA and Control System Replacement

Midwest town councils and utility boards are typically tasked with the responsibility of making long-term infrastructure decisions that protect the public health of their constituents, in addition to ensuring regulatory compliance and fiscal responsibility. While attention is often focused on visible assets of water and wastewater treatment plants— the tanks, pumps, buildings, and pipelines needed for daily operation—it’s often the less-visible infrastructure that requires equally deliberate planning: SCADA and control systems.

SCADA (Supervisory Control and Data Acquisitions) and control systems form the operational backbone of modern water and wastewater utilities. It might surprise you to learn that these systems age very differently than traditional treatment equipment. Unlike tanks or pumps that may last several decades, most SCADA and control system components have a functional life of 5 to 15 years. This is not necessarily due to poor quality, but rather the nature of electronic and software-based systems.

The top four reasons to replace aging SCADA and controls systems include:

1. Manufacturer Obsolescence & Support Limitations

Automation vendors eventually discontinue hardware and software platforms. Once support ends, replacement parts and technical assistance become limited or unavailable.

2. Cybersecurity and Regulatory Risk

Older control systems often cannot meet current cybersecurity standards. This increases vulnerability to cyber incidents and can create compliance concerns for public utilities.

3. Obsolescence of Replacement Parts

When a controller or network component fails, it may no longer be manufactured. Emergency replacement often requires costly, hard-to-source components—or full system upgrades under time constraints (and pressure).

4. Compatibility Challenges

Modern computers, operating systems, and software may not work with older control platforms, making even routine upgrades difficult or impossible.

Emergency replacements are rarely the most cost-effective or defensible use of public funds. It pays to get ahead of your aging SCADA and controls before they become problematic – contact us, and we’ll show you how.