# NPMS Public Viewer — user reviews

> 5 indexed App Store user reviews of NPMS Public Viewer by Pipeline and Hazardous Materials Safety Administration, rated 4.00/5 from 4 ratings.

- Source: https://appshunter.io/ios/app/npms-public-viewer/id1232277603/reviews
- App overview in markdown: https://appshunter.io/ios/app/npms-public-viewer/id1232277603.md
- Rating breakdown: 5★ 3 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 1

## Most critical reviews (5 lowest-rated)

### 1/5 — Please Update ASAP

*2022-09-07*

This app has been out for 4 years. While it does give notice, the fact that you can’t zoom in below 2000 meters without losing “NPMS data” means an update is well past due.
The error popup (which simply says “error”) prevents any successful query. It also appears to be intermittent, but that alone is enough for an immediate uninstall.
As it is, this app is not of much use.

### 1/5 — If this is so important, why does it not work?

*2020-03-18*

I can't rate with less than 1 star. 

I select a state and county, it loads, map screen comes up and immediately there is an error message on top. 

             ERROR
Your session has expired.
Please select a state and county
to start a new session. 

App is useless as is.

### 1/5 — Good idea if it worked

*2019-08-31*

Cannot choose a state...app crashes.

### 5/5 — Excellent app

*2024-05-11*

We’re glad we found this app a few years ago. We understand that the public can’t zoom in too close on pipelines due to security issues, but it shows you what’s in your area, including hazardous chemical pipelines, and incidents, such as spills, that you might not know otherwise. We even had a reporter reach out to us when there was an explosion and injuries at a facility that didn’t appear on the state’s oil and gas map because the state doesn’t oversee it (nor do states oversee pipelines). It was on this map in that county. We’ve shared screenshots multiple times for many purposes and regularly recommend it.

### 5/5 — Engineer

*2020-07-21*

Work as intended without issue.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-09.*