Beyond the Tap: Unpacking the Design of Clean Water
The world of water treatment was always a bit of a black box to me—that is, until I landed an internship at a water technology company that designs, manufactures, and supports treatment systems for municipal and industrial applications. Suddenly, my eyes were opened to the incredible complexity behind something most of us take for granted every day: clean water.
Figure 1: What seems simple at the tap is the result of careful planning, innovative design, and decades of engineering experience. Photo by mrjn Photography on Unsplash.
Here are some of the key design considerations I have noticed go into a water treatment system:
Everything starts with water quality
And I mean everything. The design depends on both the quality of the water coming into the plant and the quality required at the outlet. These parameters influence what equipment is needed, how large that equipment must be, and how long the water needs to remain in the treatment process. Designers evaluate factors [1] such as turbidity, total suspended solids (TSS), total dissolved solids (TDS), organic matter, pH, alkalinity, temperature, and many others. To make things even more challenging, water quality is rarely constant, meaning the designer's constraints are constantly changing.
The plant must be maintainable and accessible
A treatment plant is only as good as its ability to be operated and maintained. Designers must carefully consider equipment access, pipe routing, electrical corridors, and maintenance space. Operators and maintenance personnel need safe and efficient access to critical equipment, often for decades after the plant is built.
Reliability is built into the design
You may have heard of safety factors in engineering. In water and wastewater treatment, reliability is often achieved through redundancy. Critical equipment such as pumps, blowers, filters, and power systems frequently have backups so that treatment can continue even if a component fails. Communities depend on these systems every day, so downtime is not an option.
One thing that surprised me was that the goal is not always to produce the cleanest water possible. Instead, designers strive to produce water that meets regulatory requirements, reuse standards, and operational objectives while minimizing lifecycle costs. Successful water treatment design is often an exercise in balancing performance, reliability, sustainability, and economics.
Unlike some manufacturing facilities, no two water or wastewater treatment plants have exactly the same design constraints. Every project presents a unique combination of influent water quality, flow rate, climate, site footprint, discharge requirements, and future growth considerations. This is why process design and engineering plays such a critical role; without thoughtful design [2], these systems simply would not work.
Figure 2: What looks like a collection of tanks and channels represents thousands of engineering decisions that help protect public health and the environment every day. Photo by Ivan Bandura on Unsplash.
This summer has shown me that water treatment is far more than a collection of tanks, pumps, and pipes. It is a multidisciplinary engineering challenge [3] that requires balancing water quality, reliability, operability, sustainability, and cost to create systems that serve communities and industries every day. While most people rarely think about what happens after they turn on a faucet or flush a toilet, an enormous amount of engineering expertise goes into ensuring those systems work safely and reliably. The more I learn about water treatment, the more appreciation I have for the engineers, operators, and technicians who make clean water possible—and for the critical role these systems play in protecting public health and our environment.
REferences
[1] Molewater. (n.d.). How to size a drinking water treatment system. https://www.molewater.com/how-to-size-a-drinking-water-treatment-system
[2] National Onsite Wastewater Recycling Association. (n.d.). Wastewater treatment engineering & design resources. https://www.nowra.org/resources/resources-for-industry-professionals/system-design-engineering/
[3] McClure. (n.d.). Drinking water engineering: Ensuring a safe water supply. https://mcclurevision.com/drinking-water-engineering-ensuring-a-safe-water-supply/
To cite this article:
Hardy, Jordan. “Beyond the Tap: Unpacking the Design of Clean Water.” The BYU Design Review, 31 Aug 2026, https://www.designreview.byu.edu/collections/beyond-the-tap-unpacking-the-design-of-clean-water.
