See Your System. Anywhere. Anytime.
Mercer Controls designs, builds and supports SCADA systems for water and wastewater operations across Texas. Monitor tanks, pumps, wells, lift stations and chlorine residual from a phone, tablet or office PC — and get alarmed the moment something goes wrong.
Our Approach
We Believe in Simple SCADA
SCADA should give you remote access and control over your system without adding a second line to your budget. No per-point licensing, no hefty software fees, and no support contract just to add a tank level.
- No per-tag or per-point licensing
- No hefty annual software fees
- Hardware you own, on a radio or cellular path you control
- Screens built around what your operators actually use
Simple does not mean limited. You still get live status on every site, pump start/stop and setpoint changes from a phone, alarm callouts, and the trending and reports you need for monthly submittals. Ask what Simple SCADA would cost for your system.
What You Get
- Viewable on any computer, phone or tablet
- Live status of every site on one screen
- Instant alarm calls, texts and e-mails
- Trending and historical data for reporting
- Runtime, flow and level logging — no more chart recorders
- Built, programmed and serviced in-house by Mercer
- No lock-in — standard PLCs; your programs, your data

Full plant control from a tablet in the field.
Two Ways to Get There
Pick the platform that fits your budget and your data needs.
Standard
Essential SCADA
Built on AutomationDirect
- Lower install cost — the most affordable way to get real SCADA
- Low monthly fees — minimal licensing and hosting
- Solid performance — reliable monitoring, control and alarming
- Live screens, alarms, trends and basic reports
- Phone, tablet and desktop access
Best for: small to mid-size systems that need dependable monitoring without the overhead.
Premium
Advanced SCADA
Built on VTScada
- Maximum flexibility — custom graphics and screens for your plant
- Powerful charting — multi-pen trends, overlays and operator notes
- Deep data — long-term history, drill-down and export
- Advanced reporting and compliance-ready records
- Higher install and monthly cost — worth it when data matters
Best for: larger plants and operators who live in the data and need serious reporting.
Advanced SCADA on VTScada: a live plant overview, and multi-pen trends with operator notes and long-term history.


How We Connect: Radio or Cellular
Licensed radio costs more up front, but there is no monthly data bill and you own the link. Cellular is cheap and fast to deploy, with a monthly data charge per site. Distance, terrain and how many sites you are tying together usually decide which one fits — tell us your sites and we will tell you which way to go.
The Panel Behind the Screen
Every SCADA screen sits on a panel we built. Panels typically include:
- PLC-based control (Allen-Bradley standard, others supported)
- Radio or cellular telemetry for remote sites
- Color touchscreen HMI for local monitoring and control
- Power distribution, protection and panel-mounted devices
- Interfaces for pumps, tanks, instruments and alarms
Built, wired and tested in-house — clean layouts, clear labeling and screens an operator can read at 2am. We service what we build.

Works With What You Already Have
- New SCADA systems
- Expansion of existing telemetry networks
- Integration with plant or city-wide SCADA platforms
- Room for future growth and upgrades
We select components for reliability, compatibility and long-term support — not vendor lock-in.

Every site in a city system, live on one screen.
Trusted by 100s of Operations Since 1992
Talk to us about SCADA for your system. Call (361) 782-7168.