Water Knowledge


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Explore these unique collaborative communities that integrate current resources, tools, and learning opportunities related to a wide variety of water topics.

Recent Updates: 

Water Loss Control

Water coming from a main break

Water utilities are continually improving water delivery operations by keeping system losses
to a minimum.     

Learn more about Water Loss Control


How Water Works
How Water Works poster

How Water Works illustrates the processes, equipment and technology of a water supply and wastewater treatment system.

Explore How Water Works

Conservation communications

Water Conservation Guide Logo

AWWA volunteers have created an easy-to-navigate toolkit to help utilities communicate the value of conservation to consumers, public officials and other key stakeholders.

Read the overview (PDF)

To request a full copy of the CD kit:
Email Amber Wilson

Hypochlorite Assessment Model
Storage tanks

A predictive modeling tool available exclusively to AWWA utility members provides guidance on the expected levels of perchlorate and chlorate in bulk hypochlorite solutions.

Access the model

Lab bottles

Corrosivity Calculations

Estimate the corrosivity of a water sample using the Langelier Saturation Index (LSI) and the Ryznar Stability Index (RSI); the following spreadsheet comes from AWWA WaterMATH version 2.0 (currently unpublished):

WaterMATH Corrosivity Estimators (XLS)

For more precise estimates, try the Tetra Tech (RTW) Model for Water Process & Corrosion Chemistry