The 5 Most Common Types of Water Treatment Chemicals

These chemicals are used to prevent corrosion in pipes and other water treatment systems. They are also known as scale inhibitors, anti-scalants, or corrosion inhibitors.

Corrosion Inhibitors

These chemicals are used to prevent corrosion in pipes and other water treatment systems. They are also known as scale inhibitors, anti-scalants, or corrosion inhibitors.

Corrosion inhibitors work by preventing the buildup of calcium carbonate (i.e., hard water) on pipes and other surfaces. This buildup can cause clogs and other problems in your plumbing system.

The most common type of corrosion inhibitor is phosphates. Phosphates are inexpensive and easy to find at any home improvement store. They're also very effective at preventing corrosion, which means they're often used in whole-house water softeners to control scale problems throughout the house's plumbing system.

Another type of corrosion inhibitor is silicates, which are usually combined with phosphates to create a more effective solution for controlling scale buildup in your home's pipes and appliances.


There are many types of water treatment chemicals that can be used to treat different types of water quality issues. The most common types of water treatment chemicals are coagulants, flocculants, coagulant aids and bacterial additives.

Coagulation: Coagulation is the process by which suspended particles in water are bound together by chemical reactions. This process is often used in softening water and removing hardness from the water supply.

Flocculation: Flocculation is the process by which large clusters of particles in a liquid form larger clumps through a chemical reaction. This process can help remove turbidity and color from your water supply.

Coagulant Aids: Coagulant aids are compounds that are added to the water during coagulation to help speed up the process or improve its effectiveness. These compounds include aluminum sulfate and ferric chloride — both salts that speed up coagulation by neutralizing positively charged particles with negative charges on their surfaces. They also include organic materials like alumina trihydrate (ATH) and polymers like polyacrylamide (PAM).

Disinfection Chemicals

Disinfection chemicals are used to kill bacteria, viruses and other microorganisms in water.

Disinfection chemicals include chlorine, chloramines, and ozone. Chlorine is added to water during the treatment process. Some utilities add chlorine as a gas, while others use sodium hypochlorite solution (liquid bleach) to disinfect water. Chlorines bleach properties help it bind to organic matter and disinfect it by oxidizing it.

Chloramines are formed when ammonia is added to free chlorine in water. Ammonia helps form chloramines which are more stable than free chlorine under certain conditions. The most common type of chloramine is monochloramine (NH2Cl). Chloramines have a stronger odor than free chlorine but they do not dissipate as quickly as free chlorine does (about 3 days). They also tend to leave behind an unpleasant taste and smell in drinking water that can be removed using an activated carbon filter or reverse osmosis system.

Ozone (O3) has been used for many years for water disinfection, as well as air purification, food sterilization and industrial applications requiring high levels of oxidation efficiency at low concentrations

Scale Inhibitors

Water is a valuable natural resource, and it should be treated with care. Water treatment chemicals are used to remove impurities from water before it is used for drinking and other purposes. There are many different types of water treatment chemicals, but some common ones are:

Scale Inhibitors - Scale is a hard deposit that forms on the inside of pipes and heat exchangers. This can cause blockages, which can lead to equipment failure. Scale inhibitors break down these deposits before they have a chance to build up into scale deposits.

Corrosion Inhibitors - Corrosion occurs when water reacts with metal surfaces and causes them to corrode or rust. Corrosion inhibitors stop this reaction before any damage occurs.

Dechlorinators - Chlorine and other disinfectants are added to water supplies as a way to kill harmful bacteria and viruses. These disinfectants can also harm humans who drink too much chlorinated water over long periods of time, so dechlorinators remove them from the water supply by converting them into harmless compounds like chloride ions or sodium hydroxide (lye).

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