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Efficiently Monitoring Small Wastewater Systems with Reliable RTUs

By Andrew Erickson

February 25, 2025

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When you're responsible for a small wastewater system - whether you're running a tiny municipal utility or overseeing a rural treatment plant - you can't afford to have undiagnosed problems. You have critical equipment that can fail, environmental regulations to satisfy, and (of course) a community to serve.

The question is: How do you keep everything running without breaking the bank or eating up labor time with routine site checks?

I'll show you exactly why a dedicated RTU (Remote Terminal Unit) is so important for protecting your wastewater infrastructure. We'll also go over picking the right RTU and how a central head end can simplify large-scale monitoring. Let's get started!

Remote telemetry unit

Protect Your Wastewater Infrastructure with Smart Monitoring

Consider all the elements that can go wrong in a wastewater system:

  • Pumps, valves, and aerators can fail without warning.
  • Temperature fluctuations can damage sensitive components.
  • Thieves and vandals can wreak havoc if there's no security in place.
  • Overflows can lead to environmental violations (and related large fines).

If you're not monitoring your system correctly, you'll only find out about these issues when it's already too late. By then, you're scrambling to fix urgent problems under time pressure and needlessly wasting your budget.

Poor Monitoring Leads to Blind Spots and Failures

No monitoring (or poor monitoring) leads to:

  • Unnoticed equipment failures. Motors, pumps, and other assets can degrade silently.
  • Temperature extremes that damage electronics.
  • Security blind spots that invite unauthorized access.
  • System overloads that push you out of compliance.

The good news? You don't need a massive, complicated SCADA system to get solid visibility. You just need the right RTU setup for your project's size.

That's enough to give you 7x24 visibility of your entire operation.

"Built-In Monitoring" Isn't Enough

Some wastewater gear will offer "integrated monitoring." It sounds convenient at first, but it often doesn't work well in practice. Here's why:

  1. Limited Visibility - Many "integrated monitoring" devices will track only a few parameters (just enough to justify putting it on the marketing brochure). You don't get real-time alerts.
  2. Proprietary Systems - You can get locked into a single manufacturer's ecosystem. This makes future upgrades and multi-vendor integration a headache.
  3. No Long-Term Support - If that built-in monitoring is discontinued, firmware updates and tech support vanish with it.

By contrast, dedicated RTUs are designed from the ground up by alarm monitoring experts like DPS. They provide flexibility, real-time alerts, and long-term reliability - without limiting your future options (because they typically support open protocol standards).

Real-Time Alerts Keep You Ahead of Failures

A wastewater-system failure can lead to environmental damage, regulatory fines, and expensive emergency repairs. The key is catching small problems before they explode into a major crisis.

A quality remote monitoring RTU gives you:

  • Instant notifications via email, SNMP traps, or text messages.
  • Pump station, valve, and aerator monitoring to spot early warning signs.
  • Environmental oversight (temperature, humidity, flood sensors) so you can intervene quickly.
  • Preventative protection against equipment damage by detecting overheating or pressure anomalies early.

Nothing compares to knowing you'll be the first to know when something goes sideways.

How Remote Monitoring Saves Time and Money

With remote monitoring, you'll be able to:

  • Have fewer site visits - Check data from your office (or your phone).
  • Pinpoint exact failures - No more guesswork. Dispatch the right person with the right parts.
  • Improve response times - Alerts give you a jump on the problem, so you can fix it before it spirals.

The bottom line is you save on labor costs, reduce downtime, and stay in compliance - all at once - with remote monitoring. That's why finding dependable, quality equipment for any new monitoring system is so important.

Easy Web-Based Access from Anywhere

Modern RTUs are built for as much simplicity as possible (while still giving you freedom to customize). Find an RTU with a web interface that lets you:

  • View real-time data (pump status, temperature, security sensors) straight from your browser.
  • Adjust alarm thresholds to eliminate nuisance alerts.
  • Browse historical logs to identify recurring issues or trends.

With the best RTUs, you can just open a web browser from the office, you home, or your smartphone - and you're good to go.

Smarter Monitoring for Small Wastewater Projects

When you're looking for a scalable, reliable solution for a smaller site, you shouldn't have to overspend on capacity or wrestle with a complex software interface. That's why DPS Telecom offers RTU options that can handle whatever you throw at them.

When it comes to small wastewater projects, DPS offers two RTUs well fit for the job:

Network Options for Smaller Wastewater Projects

1) NetGuardian 480 G4

  • Monitors dozens of sensors (flow meters, pumps, security alarms, temperature, humidity, etc.)
  • Includes a web-based interface for easy remote access - log in from anywhere.
  • Connects to your central monitoring system via LAN.
  • Sends real-time alerts (SNMP traps, email, or SMS) to keep you ahead of failures.

This RTU is ideal if you have a lot of discrete (contact closure) alarm points to monitor and want a single device that can handle it all.

2) TempDefender G2

  • Compact capacity - perfect for small facilities with fewer monitoring points that still have 19" or 23" equipment racks.
  • Supports temperature, humidity, flood, and other essential sensors.
  • Also comes with an intuitive web-based interface.
  • Instantly alerts you when your thresholds are exceeded.

If you're running a smaller operation or have multiple small sites, the TempDefender G2 delivers strong functionality without an oversized price tag.

The T/Mon MINI Can Help You Scale

If you're already juggling multiple wastewater facilities, or plan to grow in the future, a central alarm master is a game-changer.

The T/Mon MINI is a reliable master station with several advantages. The device offers:

  • A single dashboard for all your remote sites. View all of your RTU alarm data under one, clear screen for organized alarm management.
  • Automated reporting so you spend less time on log checks.
  • Easy SNMP integration for compatibility with third-party monitoring systems.

Get the Right Monitoring System for Your Wastewater Facility

Your wastewater system is critical infrastructure. You need real-time data to prevent failures, avoid compliance headaches, and protect public safety. The best time to set up strong remote monitoring is before something goes wrong. We get a lot of panicked calls after something has gone wrong, so try to be a bit more proactive so you can:

  • Prevent costly repairs by catching issues early.
  • Ensure environmental compliance with real-time alerts.
  • Reduce downtime and keep the public safe.

Ready to protect your wastewater system with a solution built by monitoring experts?

Call: (559) 454-1600
Email: sales@dpstele.com

My team and I will help you pick the perfect RTU to make sure you have the visibility you need.

Don't wait for your next disaster to shock you into action. Get yourself the reliable monitoring system your wastewater facility deserves.

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Andrew Erickson

Andrew Erickson

Andrew Erickson is an Application Engineer at DPS Telecom, a manufacturer of semi-custom remote alarm monitoring systems based in Fresno, California. Andrew brings more than 18 years of experience building site monitoring solutions, developing intuitive user interfaces and documentation, and opt...