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Environmental Laboratory

Montana State Environmental Laboratory

Water dropThe Environmental Laboratory of the Montana Department of Public Health and Human Services is a full-service environmental laboratory providing analytical, consulting, and training services to programs of the State of Montana, local and federal agencies, and to the general public. The mission of the Environmental Laboratory is to support Montana’s efforts to preserve a healthy environment by:

  • performing efficient and high quality environmental analyses
  • providing guidance and consultation regarding the requirements of environmental analyses
  • promoting intergovernmental coordination and cooperation in the area of environmental testing
  • providing consultation and certification services to laboratories analyzing drinking water

For more information about our Environmental Laboratory and available testing, view our brochure and our Current Fee Schedule.

Public Water Supply Testing for Drinking Water

Compliance Testing

The goal of every Public Water Supply (PWS) is to provide clean, safe water to customers. To help Public Water Suppliers achieve this goal, the State Environmental Laboratory offers Drinking Water Compliance testing in accordance with EPA and State regulations. Individual tests may be requested (listed in Current Fee Schedule), or tests may be requested as a group (listed below, under Test Forms). In addition, the laboratory reports drinking water compliance results electronically to the Montana Department of Environmental Quality (DEQ). DEQ's water website provides access to the monitoring forms and regulations.

Test Forms with Collection Instructions

PWS Microbiology/Nitrate Testing

PWS Entry Point (EP) Testing

PWS Disinfection By-Product (DBP) Testing

PWS Lead & Copper Testing

Private Well Testing

Groundwater Contamination

A number of factors influence a well's susceptibility to contamination. The location of the well and construction are of maximum importance. The well should be located away from potential sources of contamination, such as:

  • septic systems
  • livestock yards or barns
  • landfills or dumps
  • above-ground or underground fuel storage tanks which could potentially leak
  • areas where pesticides, herbicides, or fertilizers are mixed
  • low-lying areas which may be subject to flooding during times of runoff

Groundwater itself may become contaminated in a number of ways. The most common way for this to happen is by contaminated surface water. Shallow aquifers can come under the influence of surface water if a stream, river, pond, or lake is near. Flooding from spring runoff, or runoff from fields which have been fertilized or have had pesticides or herbicides sprayed can also threaten groundwater. Spilled organic compounds, such as fuels, solvents, pesticides and herbicides can be carried by surface water as it percolates through the soil to an aquifer. Aquifers may be contaminated by surface water which leaches heavy metals from mines, nitrate and bacteria from septic systems or livestock yards, and various kinds of organic compounds from landfills. Abandoned but unsealed wells provide easy access for contamination carried by rodents, flood or runoff water, or from improper disposal of waste or refuse in the well.

If you are unsure about what testing you need, please call the laboratory toll free at 1-800-821-7284, or visit the EPA website for more information about water problems and recommended testing. Potential health effects of contaminants are listed in EPA's Drinking Water Regulations.

Test Forms with Collection Instructions

Private Well Testing- Chemistry: Packages are available to screen for metals, nutrients, anions, organics, and more.

Private Well Testing- Microbiology: A variety of options for only bacteria testing.

HUD/FHA Mortgage Testing: Testing required by the U.S. Department of Housing and Urban Development for a HUD/FHA loan.

If these Private Well Testing forms do not include the desired tests, other testing is available, listed by individual tests.

Sample Delivery & Contact Information

Samples may be delivered to the Montana State Environmental Laboratory via our complimentary courier service, any mail carrier, or hand delivered to the laboratory.

Visit our Sample Delivery page for courier locations and directions to the laboratory. Contact the laboratory with any questions or concerns.