Pennsylvania collects and manages public drinking water system information in the Pennsylvania Drinking Water Information System (PADWIS).

The data includes water system inventory information, drinking water sample results for testing required by the regulations and violations of PA Safe Drinking Water Regulations, pertaining to monitoring/reporting requirements, MCL exceedances, and treatment techniques.
Much of this data is searchable via the www.drinkingwater.state.pa.us website. This set contains drinking water sample results reported on behalf of Pennsylvania’s regulated public water supplies.
The data is updated quarterly.

Safe Drinking Water Information System (SDWIS) is EPA’s national database that manages and collects public water system information from states, including reports of drinking water standard violations, reporting and monitoring violations, and other basic information. The data derived in the State of Pennsylvania is published and searchable online on the www.pa.gov website. This set contains the Water System Facility data, which will be updated annually for the prior calendar year in the first Quarter of the following year.

Safe Drinking Water Information System (SDWIS) is EPA’s national database that manages and collects public water system information from states, including reports of drinking water standard violations, reporting and monitoring violations, and other basic information. The data derived in the State of Pennsylvania is published and searchable online on the www.pa.gov website. This set contains the Water System Facility data, which will be updated annually for the prior calendar year in the first Quarter of the following year.