1. Client Background

A municipal water utility serving a metropolitan region of over 3.2 million residents in Southeast Asia. The utility operates 6 water treatment plants (WTPs) with a combined daily capacity of 1.8 million cubic meters, supplying potable water to residential, commercial, and industrial users across the region.

2. Challenge

The utility faced mounting pressure from both regulators and the public to improve water quality consistency while reducing operational costs. Key issues included:

• Inconsistent water quality: Manual chemical dosing adjustments led to turbidity and pH fluctuations, resulting in 14 compliance violations over a 2-year period.
• Excessive energy consumption: Pump operations were not optimized for demand patterns, wasting an estimated 22% of total energy input.
• Limited remote visibility: Engineers could only access plant data on-site, delaying response to off-hours alarms by an average of 45 minutes.

3. Solution

We designed and deployed an integrated RTU automation solution across all 6 treatment plants, featuring:

The RTU controllers executed local PID logic for chemical dosing and pump speed regulation in real time, while syncing all operational data to the cloud-based SCADA platform. Engineers gained full mobile access to plant status, alarms, and historical trends.

4. Results

• Energy consumption reduced by 40% — smart pump scheduling and VFD optimization cut annual electricity costs by approximately $320,000 USD.
• Compliance rate improved from 86% to 99.6% — automated dosing eliminated human error, achieving consistent water quality within regulatory thresholds.
• Alarm response time reduced by 83% — from 45 minutes to under 8 minutes, with mobile push notifications enabling immediate remote action.
• Chemical usage down 28% — precise, real-time dosing reduced coagulant and disinfectant consumption without compromising treatment efficacy.

5. Client Feedback

The RTU automation system has been a game-changer for our operations. We now manage all 6 plants from a single dashboard, with full confidence in water quality consistency. The energy savings alone delivered ROI within 14 months. — Director of Water Operations