About NPMS Public Viewer
The Pipeline and Hazardous Materials Safety Administration’s (PHMSA) National Pipeline Mapping System (NPMS) has developed the NPMS Public Viewer iPhone app to allow the public to view hazardous liquid and gas...
The Pipeline and Hazardous Materials Safety Administration’s (PHMSA) National Pipeline Mapping System (NPMS) has developed the NPMS Public Viewer iPhone app to allow the public to view hazardous liquid and gas transmission pipeline maps. The user can see who operates a pipeline, what it transports, and who to contact for further information. To get started, a user may choose one county or offshore area (including state waters or federal waters) or choose to see pipelines closest to the user’s current location. For more information about the NPMS, or to access the full desktop browser version of the NPMS Public Map Viewer, go to the NPMS website at https://www.npms.phmsa.dot.gov/.
Version History Minor bug fixes 1.4.1 Jan 29 Minor changes- Upgraded tileEngine. 1.4.0 08/21/2025 Update abandoned opid field. 1.3.9 05/29/2025 Minor changes to sync frontend changes with backend changes. Clean up and minor fixes. 1.3.8 04/04/2025 -Abandoned Pipeline Layer 1.3.6 01/16/2025 Abandoned Pipeline Layer 1.3.5 01/16/2025 Add timeout session 1.3.4 11/20/2024 Add BOT layer. 1.3.3 09/20/2024 Add "Terms of Use" and "DOT Vulnerability Disclosure Policy". 1.3.2 07/17/2024 Updated the labels 1.3.1 03/23/2024 User interface enhancements 1.3 11/04/2021 Minor system setting updates 1.2 05/31/2017 Minor app setting tweak 1.1 05/15/2017 1.0 05/12/2017
Previous Versions
Here you can find the changelog of NPMS Public Viewer since it was posted on our website on 2024-05-31 14:06:59.
The latest version is 1.4.1 and it was updated on 2026-10-17 08:02:19. See below the changes in each version.
NPMS Public Viewer version 1.4.1
Updated At: 2026-10-14
Changes: Version History Minor bug fixes 1.4.1 Jan 29 Minor changes- Upgraded tileEngine. 1.4.0 08/21/2025 Update abandoned opid field. 1.3.9 05/29/2025 Minor changes to sync frontend changes with backend changes. Clean up and minor fixes. 1.3.8 04/04/2025 -Abandoned Pipeline Layer 1.3.6 01/16/2025 Abandoned Pipeline Layer 1.3.5 01/16/2025 Add timeout session 1.3.4 11/20/2024 Add BOT layer. 1.3.3 09/20/2024 Add "Terms of Use" and "DOT Vulnerability Disclosure Policy". 1.3.2 07/17/2024 Updated the labels 1.3.1 03/23/2024 User interface enhancements 1.3 11/04/2021 Minor system setting updates 1.2 05/31/2017 Minor app setting tweak 1.1 05/15/2017 1.0 05/12/2017
NPMS Public Viewer version 1.4.1
Updated At: 2026-09-05
Changes: Version History Minor bug fixes 1.4.1 Jan 29 Minor changes- Upgraded tileEngine. 1.4.0 08/21/2025 Update abandoned opid field. 1.3.9 05/29/2025 Minor changes to sync frontend changes with backend changes. Clean up and minor fixes. 1.3.8 04/04/2025 -Abandoned Pipeline Layer 1.3.6 01/16/2025 Abandoned Pipeline Layer 1.3.5 01/16/2025 Add timeout session 1.3.4 11/20/2024 Add BOT layer. 1.3.3 09/20/2024 Add "Terms of Use" and "DOT Vulnerability Disclosure Policy". 1.3.2 07/17/2024 Updated the labels 1.3.1 03/23/2024 User interface enhancements 1.3 11/04/2021 This app has been updated by Apple to prepare for watchOS 27 compatibility. No new features are included.
Minor system setting updates 1.2 05/31/2017 Minor app setting tweak 1.1 05/15/2017 1.0 05/12/2017
NPMS Public Viewer version 1.4.1
Updated At: 2026-08-26
Changes: Version History Minor bug fixes 1.4.1 Jan 29 Minor changes- Upgraded tileEngine. 1.4.0 08/21/2025 Update abandoned opid field. 1.3.9 05/29/2025 Minor changes to sync frontend changes with backend changes. Clean up and minor fixes. 1.3.8 04/04/2025 -Abandoned Pipeline Layer 1.3.6 01/16/2025 Abandoned Pipeline Layer 1.3.5 01/16/2025 Add timeout session 1.3.4 11/20/2024 Add BOT layer. 1.3.3 09/20/2024 Add "Terms of Use" and "DOT Vulnerability Disclosure Policy". 1.3.2 07/17/2024 Updated the labels 1.3.1 03/23/2024 User interface enhancements 1.3 11/04/2021 This update from Apple will improve the functionality of this app. No new features are included.
Minor system setting updates 1.2 05/31/2017 Minor app setting tweak 1.1 05/15/2017 1.0 05/12/2017
NPMS Public Viewer version 1.4.1
Updated At: 2026-01-29
Changes: Minor bug fixes
NPMS Public Viewer version 1.4.0
Updated At: 2025-08-21
Changes: Aug 21, 2025
Version 1.4.0
Minor changes- Upgraded tileEngine.
NPMS Public Viewer version 1.3.9
Updated At: 2025-05-29
Changes: May 29, 2025
Version 1.3.9
Update abandoned opid field.
NPMS Public Viewer version 1.3.8
Updated At: 2025-04-04
Changes: Apr 4, 2025
Version 1.3.8
Minor changes to sync frontend changes with backend changes. Clean up and minor fixes.
NPMS Public Viewer version 1.3.6
Updated At: 2025-01-16
Changes: Jan 16, 2025
Version 1.3.6
-Abandoned Pipeline Layer
NPMS Public Viewer version 1.3.4
Updated At: 2024-11-20
Changes: Nov 20, 2024
Version 1.3.4
Add timeout session
NPMS Public Viewer version 1.3.3
Updated At: 2024-09-20
Changes: Sep 20, 2024
Version 1.3.3
Add BOT layer.
Disclaimer
Official App Store Link
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