In the water purification industry, consistency and control are critical. For one of our clients, maintaining the right water quality was not just a feature—it was the core value of their product. The client had already developed a unique system that could monitor and control TDS (Total Dissolved Solids) levels in real time. The product was functional and already present in the market. However, scaling and maintaining it posed significant challenges.
The Existing System
The product was designed to continuously measure water quality and adjust it to match a user-defined TDS level. This allowed users to maintain consistent taste and mineral balance, which is especially important in drinking water systems. While the concept was strong, the implementation faced two major issues.
The Challenges
The first issue was related to measurement stability. A TDS sensor was placed at the bottom of the storage tank to monitor water quality. However, whenever new water entered the tank, the readings fluctuated rapidly. This made it difficult to rely on real-time data for accurate control, leading to inconsistent output.
The second issue was operational. The electronics for the system were designed and manufactured outside India. Even minor modifications required coordination with external teams, resulting in long delays. This not only slowed down development but also impacted production timelines and overall business efficiency.
Rethinking the Approach
The objective was clear: improve the reliability of TDS measurement, enable faster development and iteration, and bring full control of the system within India. Instead of making incremental changes, we chose to redesign the system from the ground up while preserving the original product vision.
Engineering the Solution
We developed a new control system tailored to the product's requirements. The focus was on improving how the system interprets water quality in dynamic conditions. Since fluctuations were caused by incoming water disturbing the tank environment, the solution required both hardware and system-level improvements.
The redesigned system ensured that measurements are interpreted more reliably during water inflow, control decisions are based on stable and meaningful data, and the overall system responds smoothly rather than reacting to noise. In parallel, we designed and developed a new electronics board locally. This provided complete flexibility for future updates, testing, and customization without external dependency.
The Outcome
- TDS monitoring became stable and reliable in real-world usage
- The system could consistently maintain the desired output quality
- Development and iteration cycles were significantly reduced
- Production became more streamlined with local control
Most importantly, the product moved from being dependent on external changes to becoming a fully manageable and scalable solution.
Conclusion
This project demonstrates the importance of not just building a working system, but building one that can evolve efficiently. By combining system-level thinking with practical engineering, it is possible to improve both product performance and business operations. In this case, the result was not just a better device, but a more sustainable and scalable product ecosystem.