DHI Agronomy Turf Food & MilkWater & EnvironmentalAbout AgSourceLocations News Contact
 Umatilla, Ore. > Water AnalysisDrinking Water

Drinking Water Testing Options

AgSource Laboratories is TNI Certified by the Washington Department of Ecology and the Oregon Environmental Laboratory Accreditation Program (ORELAP) for the analysis of, Coliform, E. coli and Nitrates in drinking water and meets all requirements of the 2009 NELAC Standards.

Why use a TNI Certified lab?

  •  A certified laboratory provides data of a known and documented quality.
  • Certified labs have very strict quality control guidelines and are routinely monitored by the accreditation agency.

What are Coliforms, E.coli and Nitrate and why should I have my water tested?

Coliforms are a group of closely related microorganisms and are used as an indicator organism to determine the potential presence of disease-causing (pathogenic) bacteria in your water. A positive coliform result means there has been a failure in the water system and potentially harmful pathogens may have entered your drinking water. Coliform bacteria may or may not be harmful themselves but they do indicate the potential presence of other harmful pathogenic organisms.

E. coli is a type of fecal coliform bacteria common in human and animal intestines. A positive result means your water is contaminated with fecal waste. Do not drink any water with a positive E. coli result. Boiled or bottled water should be used for drinking, making ice, brushing teeth, washing dishes and food preparation.

Nitrate originates from fertilizers, animal, or human waste. Nitrate results above 10 mg/L are higher than the EPA's Maximum Contamination Level and are not recommended for consumption. High levels of nitrate in drinking water are a potential health hazard. Do not boil water to remove nitrate, boiling contaminated water can increase the level of nitrate.

Wells and storage tanks used to ration potable water should be tested annually for microbial contaminants. The U.S. Environmental Protection Agency (EPA) also recommends testing for nitrates, pH and arsenic annually in wells producing potable water.
Oregon Health Authority (OHA) and Department of Environmental Quality (DEQ) also recommend that you call your local County Health Department for recommendations of other contaminants to test for.

AgSource Umatilla also tests for secondary contaminants that may cause aesthetic effects such as taste, odor and color. These tests include: pH, copper, iron, manganese, total dissolved solids, sulfate, chloride, and zinc.

AgSource Laboratories offers the following testing packages:

  • Certified water tests: Total coliform/E. coli & Nitrate
  • Domestic real estate transactions: Total coliform/E. coli & Nitrate & Arsenic
  • Primary and secondary contaminants package: Total coliform/E. coli & Nitrate + pH, copper, iron, manganese, Total dissolved solids, sulfate, chloride, and zinc
The AgSource Advantage
  • Free Sample Supplies
  • Convenient Sample Courier Services Available
  • Quick Turn Around Time

Forms & Information
Collecting a Water Sample  
Chain-of-Custody for Drinking Water Only  
Domestic Well Testing for Real Estate Transaction  

Contact the laboratory for additional information:

Phone: 541-922-4894
Toll Free: 800-537-1129

AgSource Laboratories - Umatilla, Ore.541-922-4894umatilla@agsource.com