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Water & Environmental


Approximately 70 percent of the earth's surface is water, but only one percent of the water on earth is drinkable. Clean, safe water is a precious resource. AgSource offers certified water testing services to a variety of customers. Analysis is provided for but not limited to:

  • Drinking Water
  • Groundwater
  • Wastewater
  • Waste Treatment Facility Sludge
  • Swimming Pools & Spas
  • Well Water
  • Dairy Water
  • Fertilizer Dike Run-off Water
  • Irrigation Water


Forget the hassles of shipping. Drop off sample at one of our convenient pick-up locations. Water testing is very time sensitive. Use the AgSource van route to ensure samples arrive promptly. Call today to find out when we will be in an area near you. Results can be sent via email, fax, or standard postal service. Let us know which works best. 

  • Sample pick-up service
  • Quick turn-around time
  • Competitive pricing
  • Friendly & knowledgeable staff
  • Accurate & consistent results
  • Convenient, central location

Trusted Results

Over the past 50 years, AgSource has built a reputation on quality service and accurate results. AgSource Laboratories in Marshfield is certified by the Wisconsin Department of Natural Resources (WDNR), the Wisconsin Department of Agriculture Trade and Consumer Protection (WDATCP), and the Environmental Protection Agency (EPA).

Tests for Drinking Water from Private Wells written by Wisconsin DNR

Drinking Water Request Form

Water Holding Time Chart

AgSource Laboratories - Marshfield, Wis.715-898-1402