Pool & Spa Water Testing

Keep your clients, guests, and family safe when you choose our state-of-the-art facilities for accurate pool & spa water analysis. We’ll help you remain compliant with state testing regulations and guide you through the impact of your results.

Pool & spa testing is available for:
  • Public swimming pools
  • Health spas
  • Hotels
  • Camps
  • Fitness centers
  • Private individuals

Collect your own samples and send them to us or arrange for a pick up, or schedule an onsite water sample collection for your pool & spa water analysis.  Have questions about caring for your pool or spa, or troubleshooting a related water quality issue? Contact us online and talk to one of our water testing experts today.

Pool & Spa Testing Options

Testing options and DNR regulations vary based on state. Contact your preferred AgSource Laboratories location representatives for more details on the exact tests available.

  • Total Coliform
  • E. Coli Coliform
  • Pseudomonas
  • Chlorine Reading (onsite)

Sample Pick-up – In Iowa and Wisconsin, AgSource offers onsite testing and sample pick-up. Call today to see when the AgSource van is in your neighborhood!

** Notice for Iowa Customers ** Public swimming pools and spas (hot tubs) must be tested at least once a month to be in compliance with the Iowa Health Department. 

Pool & Spa Sampling Guide

Proper sampling is critical. It’s the first step to ensuring an accurate result.

  • Submerge the bottle as far from the edge of the pool or spa as possible.
  • Once the bottle is submerged, remove the lid and fill the bottle completely.
  • Replace the lid while the bottle is still under water.
  • Take free chlorine and total chlorine tests, and record them readings on the data sheet (this is optional and for your information only).
  • Completely fill out the data tags. A blue tag should be used for the sample collected from the pool. One blue tag and one yellow tag should be used for the samples collected from the spa.

Important Reminders

  • Sample bottles are sterilized.
  • Do not rinse bottle before sampling.
  • Do not touch the inside of the lid or the lip of the bottle.
  • Never open the bottle until collecting the sample.
  • The powder or liquid inside of the bottle is a de-chlorinating agent that is added for testing purposes

If you have any questions, please contact your local AgSource Laboratories location representatives.

Pool & Spa Resources

Procedure for Eliminating Pseudomonas aeruginosa Bacteria in Spas

Pseudomonas aeruginosa is a common bacterium which can cause skin rash, urinary tract infection, and pneumonia, especially in individuals who may be harmed or otherwise susceptible. Click here to view instructions on how to get rid of this harmful bacteria.

Spa Troubleshooting – Are you having issues with your spa? Here are some questions to answer that might help you pinpoint the issue.  Click here to view the questions as a PDF.

Maintenance Issues

  • How often is the filter cleaned?
  • How often is the spa drained and cleaned?
  • What is the filter cleaning procedure? Does it include disinfection?
  • Is the filter sand or cartridge in good condition and is it clean?
  • If there is a spa cover, is it cleaned routinely?
  • Is the spa surface in good condition and free from cracks and blemishes?
  • Are there any plumbing leaks?
  • Is there an air blower? Is the air piping accessible for cleaning and disinfection?
  • Has there been recent construction or modifications to the spa or the area around the spa?

Monitoring Issues

  • Are the disinfectant residual and the pH checked at the required frequency?
  • Are bacteriologic samples sent to a certified lab at least once a month?
  • Are there written instructions for operational and maintenance procedures?
  • Are there records of testing, chemical usage, and maintenance procedures?
  • Is there a disinfectant / pH controller? Is it being used and maintained properly?

Chemical Issues

  • Is a disinfected chemical feeder installed? Is it operational? Is it large enough? Is it supplied with disinfectant chemical routinely?
  • Are the right chemicals being used?
  • Is cyanuric acid or stabilized chlorine used?
  • How often is the spa shock chlorinated?
  • Are disinfectant residuals consistent or are there peaks and valleys?
  • Are chemical levels (pH, alkalinity, hardness) in the correct range?
  • Are there any unusual chemicals around the spa?