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Public Water Supply Program


The DEQ is collecting information on drought impacts and readiness from public water systems to inform the Governor's Drought Committee on conditions being experienced by water systems. To participate, click here Thanks for contributing information for your system!

Potential for Drought and Flooding in Montana

The DEQ is a participating member of the Governor's Drought and Water Advisory Committee. Other members include DNRC, FWP, Agriculture, Livestock, Commerce, Disaster Services, National Weather Service, and the USDA Farm Service Agency. Impacts from the drought is moderate to high both east and west of the Continental Divide through July. Please read the following Community Water Supply letter for more information. 

June 5, 2015 Greetings to All Public Water Supply Systems:

It is important to have all of your contact information and the number of current active connections updated. The number of active connections will be used to calculate your September 2015 Invoice. The Financial Contact name and mailing address will be used to mail your invoice for payment. Other contact information can be utilized in the event that your invoice is returned.

  • ARM17.38.248 (4): Each community public water supply system supplier shall determine the total number of active service connections for each fiscal year based on an assessment that occurs between July 1 and August 1 of that fiscal year; this Public Water Supply Update Form is for all public water supply systems.

The following form must be returned no later than July 31, 2015. Please fill out the necessary changes and press the return button. This will email your form back to our office. If not received by August 3, 2015 will not be reflected on your 2015 Bill. No refunds or credits will be given on changes received after August 3, 2015. 

The Department of Environmental Quality requests that you fill out and return this form via email. If you have any questions, please notify me at (406) 444-2429. Thank you for your prompt attention to this matter.

Please fill out: Service Connection Update Form  

Kindra Rissmann, Collections Specialist
Public Water Supply Program


Updated Montana's 2014 Annual Public Water System Compliance Report 

The Lab Application Sample Results (LASR) system is an application developed by the Montana Department of Environmental Quality to assist water testing labs with submission of public water test sample results to the Public Water Supply Compliance Program. Submission of the results is done throught the EPA's Lab to State software and from there into Safe Drinking Water Information System (SDWIS)

Montana Drinking Water Watch has replaced the PWS Online Query Reports.

Samples are now reported as microbial versus chemical so TCR and Ground Water Rule Samples are presented together, rather than as TCR versus non-TCR. You will also find additional options to search for samples across multiple water systems.


Montana Monitoring Schedule Reports is used to inform PWS System personnel what they must sample for, the required number of samples to be taken, where and when samples are to be taken, sample bottle information, and whether your system has met the current requirements. It is real-time, meaning the information presented is current in the database as of the time the request is made.