How do I choose a residential wastewater treatment plant and other water treatment systems?

This information is intended as a guide to home water treatment and is not a recommendation. Before installing a Water Filter For Home, contact the Environmental Health Department at your local health center.

Not all filters are the same

Water filters serve many different functions. Some improve the taste of the water, while others filter out harmful chemicals and bacteria. Not all contaminants can be removed, and not all water filters are necessary.

In fact, tap water contains small amounts of different substances. For example, it contains a lot of chlorine, which prevents germs from entering the water, and disinfectants such as fluoride, which helps prevent tooth decay. On the other hand, it also contains harmful substances such as lead and cryptosporidium. A home water filter can remove both good and bad substances from your water. Depending on the conditions in which you live, filtering your water may not be a good idea.

There are several types of filters, so it can be difficult to decide if you need one and what type is best for you. Water is not safe to drink in many parts of the world, so filtration is one way to protect your health. Here are some steps to help you decide if you need a water filter, and if so, what type and what features best meet your needs and preferences.

What is the NSF standard?

NSF Classification

Icon NSF International is an independent organization that sets standards for products from a public health perspective. One way to get an idea of a filter’s effectiveness is to check the NSF rating on the label; you can search the NSF database for each product to find its rating. NSF water purification standards: 41 (taste and odor), 53 (cyst reduction), 58 (reverse osmosis) and 62 (distillation).

What is the pore size of the filter?

Pore size refers to the size of the small holes in the filter through which the water passes. Imagine a filter. The smaller the pore size, the more contaminants can be filtered out. For example, a filter with a pore size of 1 micron means that each pore is smaller than 1 micron. This means that contaminants larger than 1 micron, such as cryptosporidium, are trapped in the filter and do not get into the filtered water. A filter with a “nominal” or “average” pore size of 1 micron means that the average pore size is 1 micron, with some pores smaller than 1 micron and some larger than 1 micron, which means that contaminants such as cryptosporidium can enter the filtered water through the larger pores.