TPJ inside is the official application from Perumdam Tirta Pandalungan Jember which is designed to provide easy access to information and services for all customers. This application is an integrated digital solution for managing clean water needs, submitting complaints, and following the latest information from Perumdam TPJ.

With TPJ inside, customers can:
- View the latest promos, events, and news about Perumdam TPJ services.
- Submit general complaints directly from the application.
- Find out the location of the service office and the method of paying water bills.
- Register the customer channel number to monitor bills and payment history (account history).
- Submit customer services such as new installations, repairing leaking pipes, moving meters, to changes in customer data.
- Get notifications regarding service status, promos, and other important information.
- View educational content about water management and Perumdam TPJ services through the TPJ Edu feature.
- Manage customer accounts and view activity history.
- Collect and exchange TPJ Points for various attractive merchandise.
- Apply for clean water assistance in emergency situations, order water tanks, and become a reseller of Hazora refill water products.

This application is developed in stages so that it can continue to meet the needs of the community, presenting faster, more transparent, and more practical services in one hand.