Wastewater Testing

Routine wastewater testing is essential to the success of facilities that discharge pollutants from any point source into surface waters. These facilities may include cities, manufacturing plants, municipalities, and other establishments that are required by law to perform regular water testing with their state DNR issued NPDES operations permit. Our wastewater testing laboratory can analyze your environmental and wastewater samples using our advanced testing methodologies, then deliver accurate results and provide the guidance you need to take the next steps. As an industry leader in reliability and service, we understand the importance of holding times and maintaining sample integrity. That’s why we offer safe and convenient van routes and shipping options for your samples.

When you work with us, enjoy these additional benefits

  • Free sampling supplies
  • Superior customer service
  • Timely results

For more information regarding wastewater testing and analysis, sampling instructions, or testing regulations, contact our wastewater testing team online today. 

Wastewater Testing Options

Whether you’re looking for organic nitrogen, BOD levels or other physical characteristics, like pH or turbidity, AgSource can customize a testing package for you. Testing capabilities are not limited to the list below. Contact your preferred AgSource Laboratories location for more details.

Testing Options:

  • Metals – Copper, Lead, Iron and more…
  • Non-Metals – Sulfates, Nitrates, Chloride and more…
  • Physical – Hardness, pH, Salinity and more…
  • Coliforms
  • BOD
  • COD
  • Nutrients
  • Solids

* Packages vary by location. For exact package details for your specific location, please contact your sales representative, email us or call the lab today.

Wastewater Sampling Guide

Proper sampling is critical. It’s the first step to ensuring an accurate result. AgSource will provide sampling supplies at no extra cost, just contact your local laboratory location today. Sampling kits include:

  • Cooler(s)
  • Chain of Custody Form
  • Sample bottle(s) specific to the analysis requested
  • Labels
  • Basic sampling and shipping instructions

Instructions – Please select from the links below for more details on wastewater sampling instructions.

  • Environmental Protection Agency (EPA) – Wastewater Sampling

** Important Sampling Reminders ** – Use sterile techniques to prevent contamination.

  • Keep sample bottle closed until the moment it is to be filled.
  • Do not rinse the container.
  • Take care to not touch or contaminate the inner surface of the lid and the neck of the bottle.
  • If the sample bottle overflows, discard the container and start over with a new bottle.
  • Leave ample air space to facilitate mixing.
  • Replace the lid immediately after sample is collected.
  • Label the sample bottle right away.

Avoid Common Sample Mistakes – Unfortunately, some samples report are invalid due to issues in sampling or shipping. The most frequent problems include:

Water Resources

The Official Chain of Custody Form – All samples must have a chain of custody (COC) form when arriving at the laboratory. At a minimum, the following information needs to be provided for all samples:

  • Sample Identification
  • Date and time of collection
  • Name of the sample collector
  • Sample preservation
  • Sample matrix
  • Special instructions, if applicable

Chain of Custody Forms – include a COC form with all samples.

Holding Times – The maximum amount of time that can pass between sample collection and sample extraction/analysis is the Holding Time. Click here to view an example Holding Time chart.

Other Resources