What Does Water Towers Do?

by Jay | Posted on February 7th, 2023

Have you ever been driving down the highway and noticed a large metal tank on top of a tower? This water tower is essential to many communities’ water supply systems.

This blog post will explore what these towers do and why they are so important. So sit back, relax, and join us as we look closer at the water towers!

Fog clears revealing a white water tower.

How Water Towers Work

Water towers are simple machines that use gravity to pressure and distribute water. Clean, treated water is pumped into the tank and stored until needed. When more water is required, the potential energy stored in the tank forces the water through the distribution pipes. 

Water towers are designed to work without electricity for a limited time, making them an essential part of many communities’ water infrastructure. From their basic design to the types of materials used in their construction, water towers have been used for centuries to provide clean, safe drinking water.


Benefits of Water Towers

One of the primary benefits of water towers is that they help to meet peak consumption needs. This means that additional pumping power is not necessary to meet demand. Additionally, water towers can work without electricity, as they rely on gravity to send water through the distribution pipes. This means that even if there is a power outage, water can still be supplied. 

Furthermore, when demand goes down at night, pumps can replace the water in the tower. Therefore, water towers allow for reliable and efficient water distribution in various scenarios.

Types of Water Towers

Water towers come in a variety of shapes and materials. The most common type is the traditional welded steel water tower, which consists of a large, cylindrical tank supported by an open column and beam framework.

Rectangular water towers are also popular and are built as small monolithic service reservoirs with the floor slab supported on an open column and beam framework. Other variations include double ellipsoidal, toro spherical, and toro ellipsoidal tanks.

All these water towers have been used since post-WWII and have proven to be reliable sources for potable water pressurization and distribution.

On a nice sunny afternoon in a small town north of Austin, Texas – Round Rock, TX, USA – Water Tower

Design of Water Towers

The design of water towers has gone through many phases since the late 1800s. Today, rectangular water towers are designed as small monolithic service reservoirs, with a floor slab supported on an open column and beam framework. 

This design helps reduce water distribution costs by allowing for the centralization of pumping and pressurization and decreasing the energy needed to pump the water. Different water towers exist, such as elevated steel tanks, ground-level reservoirs, and underground cisterns. Each tower type is designed differently to meet its environment’s needs and provide the best possible water supply.

History of Water Towers

Water towers have been a part of our history for a long time. The Louisville Water Tower is the oldest ornamental water tower in the world and was built in 1860. It is a decorative tower that features ten unique zinc statues. 

Louisville’s 1860 water tower is still in use.

Commonplace in the early 20th century, riveted tanks such as Studios Water Tower, built in 1927, is reminiscent of the tin witch’s hat. Water towers are located on high ground to provide enough pressure to send water into a municipal water supply with enough force to supply households and businesses with clean drinking water.

Uses for Water Towers

Water towers typically store potable water and provide consistent pressure to water distribution systems. They also often serve as an emergency backup water source in case of power outages or other service interruptions. 

Additionally, some water towers are used for recreational purposes, such as swimming pools and water slides, or aesthetic purposes in parks or other public places. Finally, many water towers have been converted into observation decks and tourist attractions.

Maintenance of Water Towers

Maintaining water towers is important for ensuring the safety and health of the surrounding community. Regular inspections and cleaning are required to prevent the buildup of sediment, which can harbor bacteria like Legionella.

Proper maintenance is key to keeping water towers safe and reliable, providing clean pressurized water for distribution.

The Future of Water Towers

The future of water towers looks to be one of adaptation and creativity. As the global population continues to grow and more areas become urbanized, water towers will need to be designed in ways that are more efficient and sustainable.

Technologies such as rainwater harvesting, greywater reuse, and water recycling will help meet the demand for fresh water in the coming years. 

Australian building rainwater conservation tanks for water supply on new house in rural region

Additionally, materials, construction techniques, and design advances will lead to lighter-weight and longer-lasting water towers that can better withstand natural disasters or other environmental changes. As cities continue to expand, water towers will likely remain a vital part of our infrastructure for generations to come.


In conclusion, water towers serve a variety of critical functions for communities. They provide a reliable source of drinking water for households, support firefighting efforts, and ensure adequate pressure for fire hydrants.

Water towers are also important for the planet’s health, as they are highly susceptible to climate change and other environmental threats. 

Lastly, water towers come in many sizes and shapes, and careful design and maintenance are essential to ensure their long-term success. Water towers have been around for centuries and remain a vital part of our infrastructure today.


Self assessed Germaphobe, specializing in everything water, water filters, health and nutrition. Diagnosed with Type 2 Diabetes, I've acquired immense amount of knowledge when it comes to natural, biology, and everything about human anatomy.