Automate GA4 Data Quality and Governance Using Dataform

Every business decision today is fueled by data. But what if that data is wrong?

When working with GA4’s BigQuery export, you’re dealing with raw event data, which frequently contains errors such as duplicates, missing values, schema changes, and spam traffic.

These issues not only clog your database, but also affect KPIs, report integrity, and decision-making.

What’s the solution? A structured, automated data governance framework.

Thistutorial will show you how to leverage Dataform to:
- Validate and clean GA4 data automatically
- Identify schema modifications before they cause queries to break
- Create alerts for problems with the quality of the data

You will end up with a credible, automated data pipeline that guarantees the consistency of your GA4 insights.

Why You Need Data Governance for GA4 in BigQuery

GA4’s BigQuery export is great for raw event tracking but introduces challenges:

• Duplicate events (due to tracking issues, API retries, or page refreshes
• Missing key parameters (transactions without IDs, pageviews without URLs)