Welcome to ICGA

The Infiltration Control Grouting Association (ICGA), a division of NASSCO, Inc. (National Association of Sewer Service Companies) is an organization whose membership base consists of suppliers, contractors, engineers and public works representatives. These individuals have joined forces to educate sewer engineers and owners about this unique and highly versatile process. Their goal is to also support and promote the proper use of chemical grouting as a safe, economical and effective means to reduce ground water infiltration into sewer collection systems. We invite you to enter our site to learn more about the many benefits of chemical grouting as well as the features and processes that make it a proven and reliable method to control infiltration in sewers.

ICGA is a division of NASSCO, Inc.

NASSCO was formed more than 30 years ago with one goal in mind:  To set industry standards for the rehabilitation of underground pipelines.  As technologies and environmental issues change, the importance of NASSCO and its member companies is critical to assure the continued acceptance and growth of trenchless technologies.  To become a NASSCO member, please click here.

Click here for an Overview of Infiltration Control (.pdf)


ICGA promotes the chemical grouting educational events of its members. For a list of upcoming training events and seminars on chemical grouting please see below and click on the event for more information.

Click here to learn more


Fundamentals of Municipal Grouting

When 'Old School' is the Right School (.pdf)

Webinar: Engineers Turn To Injection Grouting to Stop Sewer Infiltration

FAQ: Engineers Turn to Injection Grouting to Stop Sewer Infiltration (.pdf)

Slides: Engineers Turn to Injection Grouting to Stop Sewer Infiltration (.pdf)