Due to security concerns on critical infrastructure systems, the Pipeline and Hazardous Materials Safety Administration (PHMSA) does not provide unlimited access to the Drinking Water and Ecological Unusually Sensitive Area data. PHMSA is committed to providing pipeline related data to pipeline operators complying with integrity management programs and to community officials.
THERE HAVE BEEN NO UPDATES TO THE USA DATA LAYERS SINCE THEIR ORIGINAL RELEASE.
Drinking Water USAs are used by pipeline operators in formulating their Integrity Management plans.
Drinking Water areas of concern are a subset of all surface intakes and groundwater-based drinking water supplies that provide potable water for domestic, commercial, and industrial users. These include:
An example of Drinking Water areas of primary concern in Texas.
Drinking Water USAs are defined by the following criteria:
An example of Drinking Water USAs in Texas.
Please note that due to security concerns, PHMSA cannot provide PDF maps of USAs.
If you wish to view the metadata, please select a state from the list below. The metadata may be viewed in HTML, parseable text or saved as a SGML file. If you wish to associate the metadata with the GIS file in Esri's ArcCatalog, please save the SGML version of the metadata locally. If you encounter difficulties in accessing the SGML version, please contact the National Repository at 703-317-6294 or
Drinking Water USA data will be provided to ONLY to pipeline operators who operate hazardous liquid pipelines. Due to data security concerns, contractors/consultants will need to initiate requests for drinking water USA data through pipeline operators. Thank you for your cooperation.
If you are a pipeline operator and wish to receive Drinking Water USA’s data, please email the following information to NPMS staff at
firstname.lastname@example.org with "USA Data Request" in the subject line.
All information must be provided before your request can be processed. PHMSA will verify the contact information provided by all requesting individuals.
All states except Pennsylvania
*Drinking Water USAs:
All 50 states
If you are a pipeline operator or a federal/state/local government official and wish to receive the Drinking Water USAs final report, please email the NPMS staff at email@example.com with "USA Drinking Water Final Report" in the subject line and include the list of states for which you wish to receive the report.