---
title: "NPMS Public Viewer — App Overview"
url: https://marlvel.ai/apps/npms-public-viewer
category: Reference
developer: Pipeline and Hazardous Materials Safety Administration
platforms: ios
rating: 4.0 (4 ratings)
pricing: free
report_level: overview
generated: 2026-04-24
last_verified: "2026-04-24T08:24:22.155Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** While the app provides critical infrastructure data, users frequently report significant technical instability, including session errors and map rendering failures.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Reference |
| Rating | 4.0 ★ (4) |
| Pricing | free |
| Platforms | iOS |
| Latest Version (iOS) | 1.4.1 |
| Developer | Pipeline and Hazardous Materials Safety Administration |

<!-- SECTION: Summary -->
## What is NPMS Public Viewer?

The NPMS Public Viewer is a government-developed mobile tool that provides public access to hazardous liquid and gas transmission pipeline maps. It allows users to identify pipeline operators, transported materials, and contact information based on geographic location or specific county selection.

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## Key Features

- **Geographic Pipeline Mapping**: Users can view hazardous liquid and gas transmission pipeline locations by selecting a specific county, offshore area, or their current GPS location.
- **Operator and Asset Identification**: The app provides details on which entities operate specific pipelines and the types of materials being transported.
- **Contact Information Access**: The interface displays contact details for pipeline operators to facilitate further public inquiries.

<!-- SECTION: Target Audience -->
## Who is it for?

The general public seeking information regarding pipeline infrastructure and safety in their local area.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/npms-public-viewer/id1232277603?uo=4)
- [Full Intelligence Report](https://marlvel.ai/apps/npms-public-viewer)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/npms-public-viewer).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*