DEQ Online Services

RR: Registration Required

Featured Services

Asbestos Asbestos Accreditations Search

This tool is designed to assist you in finding Montana-accredited Asbestos Inspectors who have agreed to release their information to the public. Currently-Accredited Montana Asbestos Inspectors Program page

pink meth Meth Contaminated Properties List

This list identifies properties contaminated by the production of methamphetamine. DEQ is currently helping property owners comply with the laws and rules during the cleanup of property contaminated by methamphetamine production.

Montana Air Quality Mapping Tool Montana Air Quality Mapping Tool

This tool is designed to assist you in finding air quality data for the state of Montana.

CWAIC Clean Water Act Information Center  

The Center conveys information about the quality of Montana's rivers, streams, lakes and wetlands in relation to Montana's Water Quality Standards. Specifically, it displays the results of water quality assessments made on the basis of available water monitoring data. This site is not intended as a means of accessing water quality monitoring field data.

Underground Storage Tanks TankHelper 

INTERACTIVE GUIDE TO MONTANA UNDERGROUND STORAGE TANK RULES. TankHelper translates complex petroleum storage tank rules into simple, easy-to-understand instructions for owners and operators.

Check Today's Air Quality Conditions
For Current Conditions


The Air Monitoring Data page provides several options to display hourly average particulate concentrations in the air from various air monitoring stations throughout Montana. Health effect categories are provided and explained.

The data presented on the pages is collected "near-real time" (collection frequency varies with air quality) and is intended only as an indicator of recent air quality. The particulate data may be revised at a later time following quality assurance review.

DEQ Subscription Lists DEQ E-mail Subscription Lists

The E-mail Subscription lists provide access to all the subscription lists available for you to signup for at DEQ (Brownfields, Clean Air Act Advisory Committee, DEQ Now Hiring, DEQ Press Releases, DEQ Waste P2 List).

Web Cam Air Quality Conditions Web Cam

This web cam is used primarily as an indicator of air quality conditions in Helena. It faces towards the Sleeping Giant Mountain which is 22 miles north of the Metcalf Building. When the Giant is clearly visible, the air quality in the Helena Valley is good to excellent.

Digital Atlas Query Digital Atlas/Online Query Service

Data layers available for display and reporting purposes include: Active and Inactive Regulated Underground Storage Tank sites, Abandoned/Inactive Mine sites, Active and Inactive Leaking Underground Storage Tank sites, State and Federal Superfund sites (including CERCLA, CECRA, WQA, ACGP, CALA, VCRA, and Brownfields), and Petroleum Tank Release Compensation Board sites.

Public Water Supply Public Water Supply Queries

These reports allow you to generate a report by selecting various criteria.  Report returns data from active systems only.

Source Water Protection Query Source Water Protection Query System

The Source Water Protection Program (SWPP) Query System makes it easy to access source water assessment reports, plot a public water supply (PWS) on a map, or display information that exists in an area surrounding a PWS well. More than twenty data sets can be accessed through the SWPP Query System. The system was originally developed to help evaluate each PWS's susceptibility to potential contaminant sources. However, it is a useful tool for displaying information that can help answer a wide range of questions related to land and water resources.