All forms of life, and most industries, depend on water to survive. While there are plenty of businesses that do not need any special water treatment services, there are several that depend on water treatment in order to function or to avoid damage to the environment as a result of their work.
Agriculture requires a large amount of water to simply hydrate the plants, but they do not absorb every drop. The industry also produces a large amount of wastewater, which is rarely pure. It collects contaminants in the form of soil, pesticides, and fertilizers from the fields. Livestock can also contribute their waste to the contamination.
The contamination can disrupt ecosystems if it flows into rivers or lakes, so it needs to be treated in order to prevent environmental damage. The precise type of treatment that the water receives will depend on the source and the contaminants, since the ease of treating it and the contaminants that need to be removed will vary significantly from one farm to the next. The final use of the water will also vary, since some farms will put the treated water to use, while others will dispose of their excess.
Water also plays a major role in mining. Some mines use it to help separate valuable minerals from rock and debris. Others need to pump it out of the ground in order to access the minerals. The water gets heavily contaminated in both cases, often with heavy metals and other minerals that are toxic to most living things.
Pumping that water into the environment will destroy ecosystems unless it is purified. Some mines treat it immediately, while others wait to clean the entire area as part of a remediation project. The details vary, but water treatment is always necessary.
The hospitality industry uses water to hydrate guests and to keep their properties clean. While resorts in developed areas can use the area’s normal water supply and treatment methods, isolated resorts sometimes need to treat their own water supply. That can even be part of the appeal in facilities that are aimed towards green tourism. These areas often rely on small-scale methods, but larger resorts do rely on proportionally larger water supply and treatment systems.
Homes that cannot connect to the normal water supply, such as those in many rural areas, need to treat water on their own. Most will rely on a well, but some do capture and purify rainwater or rely on other sources of water. Treating the water can be a challenge, since most methods are expensive at that scale, but that simply encourages engineers to come up with new methods. That makes home water treatment a surprisingly innovative area.