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Montana Department of Agriculture logo

Groundwater Monitoring for Pesticides and Nitrate

The Groundwater Protection Program has two primary objectives: (1) determine whether residues of agricultural chemicals are present in groundwater, and (2) where possible, determine the likelihood of an agricultural chemical to enter groundwater.

We complete our first objective through maintaining a network of permanent monitoring wells that are sampled at least twice annually. Samples are analyzed for agricultural chemicals by the Department’s Analytical Lab. The results are maintained in a database, analyzed to identify trends, and compared with Montana Numeric Water Quality Standards in Circular DEQ-7.

For the second object, we focus on both permanent monitoring wells and short-duration regional-scaled special projects to compare detections of agricultural chemicals across an aquifer or geographic region with general water quality parameters and relevant spatial data. We attempt to identify correlations between agricultural chemical detections with the water quality parameters and spatial data to determine which parameters influence the likelihood of an agricultural chemical to enter groundwater. We then extrapolate from our monitoring points to generalize the likelihood of agricultural chemicals to enter groundwater across the study areas, based on spatial data trends.

Click here for the
2016 Groundwater Protection
Program Factsheet

 

Groundwater News

MDA & USDA remind Montanans of Dangers of Invasive Pests

April is Invasive Plant Pest and Disease Awareness Month

MDA & USDA remind Montanans of Dangers of Invasive Pests

Helena, Mont. – The Montana Department of Agriculture (MDA) and United States Department of Agriculture (USDA) are reminding Montanans about the dangers of invasive pests during the month of April, which has been designated as “Invasive Plant Pest and Disease Awareness Month.” Each year, harmful invasive plant pests and diseases cost the United States about $40 billion in crop losses, damage to forests and vulnerable ecosystems, and expensive eradication and control efforts.

Waste Pesticide Disposal Program: 2017 dates and locations

All licensed pesticide applicators within the district will receive information and pre-registration forms by mail in July

Waste Pesticide Disposal Program: 2017 dates and locations

In 2017, the waste pesticide disposal program will occur in District 1, the western third of Montana. Collections will be held the week of September 19-22.

Collection Schedule:

  • September 19, 2017 - Kalispell, MT
  • September 20, 2017 - Missoula, MT
  • September 21, 2017 - Helena, MT
  • September 22, 2017 - Dillon, MT

Read on for details.

Documents to download

Christopher Kelley, PhD
Hydrologist

Phone : (406) 444-5422
E-mail : CKelley@mt.gov
Fax : (406) 444-9493
302 N Roberts
Helena, MT 59601

 

Brett Heitshusen
Environmental Science Specialist

Phone : (406) 444-3271
E-mail : BHeitshusen@mt.gov
Fax : (406) 444-9493
302 N Roberts
Helena, MT 59601

 

Groundwater Files & Reports

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