Through which system are regulated drinking water data received from Pennsylvania-accredited laboratories?

• A. PADWIS
• B. DWELR
• C. PADEP eDMR
• D. PAEWIS

Answer: (B)

The data come into the system through the Drinking Water Electronic Laboratory Reporting (DWELR) system. Labs that are PA-accredited submit their drinking water analysis results electronically to DWELR, which then integrates with the broader drinking water data workflow used by regulators. This channel is specifically designed for lab data submission, ensuring results arrive in a standardized, timely way for review and compliance.

For context, PADWIS is the main information system used to manage and access drinking water data, but the actual submission path from the lab is through DWELR. PADEP eDMR is used for electronic discharge reporting (typically wastewater), and PAEWIS is a separate environmental information system.