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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
2017 Groundwater Protection
Program Factsheet / Summary

 

Click here for the 2016 Groundwater Protection Program Factsheet

 

Interactive ArcGIS Map Data

Historic pesticide analyte detection concentrations and well locations for the Ground Water Protection Program's Permanent Monitoring Well Network:

 

Click here
to view the GWPP Monitoring Well Map

 


Groundwater News

Question-and-Answer Conference Call for Growth Through Agriculture Grant Program Applicants

October 23 at 10:00 am MST

Question-and-Answer Conference Call for Growth Through Agriculture Grant Program Applicants

Helena, Mont. – Agriculture businesses and organizations throughout Montana will have the opportunity to participate in a question-and-answer conference call on the Growth Through Agriculture (GTA) program at 10:00 am MST on October 23rd by calling 406-444-4647, access code: 574988. Once you have entered the access code, just stay on the line when asked for a PIN number - no PIN is required. Then enter your phone number when prompted.

Refer to the GTA page for more info.

2018-2019 MDA Pesticide Training Schedule

New Food Safety Modernization Act and Produce Safety Rule Overview Video from MDA

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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