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ferrous sulfate treatment

We Offer a Range of Iron Water Treatment Chemicals

Pencco is continuously striving to improve upon current treatment strategies to better meet the needs of society. The coagulants and flocculants provided by Pencco are exceptional for drinking water treatment applications, including reduced turbidity, phosphorus removal, sludge conditioning, struvite control and for addressing even the most challenging of issues. Pencco uses stringent criteria for evaluating the raw materials that are used for producing coagulants and flocculants.

Learn more about Pencco’s Green/Beneficial Reuse initiative. 

Iron Water Treatment Chemicals for Drinking Water

We offer iron based coagulants, flocculants, and various water treatment chemicals. We have a full series of advanced options that encompass every stage of water operation needs including: ferric chloride, ferric sulfate, ferrous chloride, ferrous sulfate, hydrofluorosilicic acid (HFS) and other high-quality chemicals.

Ferric Chloride and Ferric Sulfate Water Treatment Chemicals

Ferric sulfate and Ferric Chloride are used as a coagulants or flocculants for water treatment production, and several other applications such as sludge conditioning, odor prevention and more. Iron water treatment chemicals are often ideal coagulants due to their high efficiency in forming floc and achieving advanced clarification in the settling process. They are also typically 40% more efficient at removing total organic carbon (TOC) than aluminum based products.

Hydrofluorosilicic acid (HFS) is commonly used in the fluoridation of water for prevention of dental decay. Some communities have naturally occurring levels of HFS in their water and have no need to fluoridate. Others have a lack of HFS in their water and elect to add it to provide cavity protection for members of the community who otherwise might not receive it through dental treatments or otherwise.

We also have a line of proprietary chemistries such as SULFeND® and P-FAST which were designed to overcome the more challenging water conditions that some of our customers’ face.


Some of the challenges we overcome everyday with our chemistries are:

  • Coagulation
  • Rapid Floc Formation
  • Hydrogen Sulfide Removal
  • Phosphorus Removal
  • Total Suspended Solids (TSS) Reduction
  • Fluoridation
  • Sludge Conditioning
  • Retention of Alkalinity
  • Dechlorination
  • Arsenic and Selenium Removal

Water Treatment Products

ferric sulfate water treatment

Ferric Salts

Our ferric salts are manufactured to high quality specifications to ensure the best results in your water treatment system. We produce both ferric sulfate and ferric chloride to meet your city’s preference for iron delivery.

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ferrous sulfate test

Ferrous Salts

In water treatment, ferrous salts can be used for dechlorination. Hydrolyzed chlorine in water primarily exists as hypochlorous acid (HOCl), a strong oxidizer in its ionized form. Hypochlorite ions oxidize ferrous ions, removing chlorine from solution.

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water chemical testing

Polyferric Sulfate

Using a proprietary manufacturing process, we produce high-quality polyferric sulfate. Beyond the benefits of ferric salts, polyferric sulfate consumes less alkalinity in its application to coagulation and flocculation. This means less lime…

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The American Dental Association has conducted studies that show a reduction of dental caries in children by as much as 60% with fluoridated water. Furthermore, despite many using dental products with fluoride such as toothpastes and rinses…

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