Scale and Corrosion Control

AWWA scale and corrosion control standards cover the B500 series and include physical, chemical, sampling, packaging, shipping, and testing requirements for a variety of chemicals, such as carbon dioxide, potassium hydroxide, sulfur dioxide, calcium chloride, and anhydrous disodium phosphate in a variety of form factors such as powder and liquid to treat water.

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AWWA B501-2019

Sodium Hydroxide (Caustic Soda)

This standard describes sodium hydroxide, anhydrous and liquid, for use in the treatment of potable water, wastewater, or reclaimed water.

AWWA B502-2023

Sodium Polyphosphate, Glassy (Sodium Hexametaphosphate)

The purpose of this standard is to provide the minimum requirements for sodium polyphosphate, glassy, including physical, chemical, sampling, packaging, shipping, and testing requirements.

AWWA B503-2023

Sodium Tripolyphosphate

The purpose of this standard is to provide purchasers, manufacturers, and suppliers with minimum requirements for sodium tripolyphosphate (material), including physical, chemical, sampling, packaging, shipping, and testing requirements.

AWWA B504-2024

Monosodium Phosphate, Anhydrous and Liquid

The purpose of this standard is to provide the minimum requirements for monosodium phosphate, anhydrous and liquid, including physical, chemical, sampling, packaging, shipping, and testing requirements.

AWWA B505-2024

Disodium Phosphate, Anhydrous

The purpose of this standard is to provide minimum requirements for disodium phosphate, anhydrous, including physical, chemical, sampling, packaging, shipping, and testing requirements.

AWWA B506-2025

Zinc Orthophosphate

The purpose of this standard is to provide the minimum requirements for zinc orthophosphate (ZOP), including physical, chemical, sampling, packaging, shipping, and testing requirements.

AWWA B507-2023

Phosphoric Acid

The purpose of this standard is to provide the minimum requirements for phosphoric acid, including physical, chemical, sampling, packaging, shipping, and testing requirements.

AWWA B510-18

Carbon Dioxide

The purpose of this standard is to provide minimum requirements for carbon dioxide, including physical, chemical, sampling, packaging, shipping, and testing requirements.  This standard can be referenced in documents for purchasing and receiving carbon dioxide and can be used as a guide for testing the physical and chemical properties of carbon dioxide samples. The stipulations of this standard apply when this document has been referenced and only to carbon dioxide used in the treatment of potable water, wastewater, and reclaimed water.

AWWA B511-2023

Potassium Hydroxide

The purpose of this standard is to provide the minimum requirements for potassium hydroxide, including physical, chemical, sampling, packaging, shipping, and testing requirements.

AWWA B512-2023

Sulfur Dioxide

The purpose of this standard is to provide the minimum requirements for sulfur dioxide, including physical, chemical, sampling, testing, packaging, and shipping requirements.

AWWA B550-2023

Calcium Chloride

The purpose of this standard is to provide the minimum requirements for calcium chloride, including physical, chemical, sampling, packaging, shipping, and testing requirements.

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