DATE:                        July 27, 2023

TOPIC:                       Water Proficiency Study

PURPOSE:                 Announcement of Quality Control (QC) Lab Results


As a Certified Laboratory, the QC Lab is required to participate in Proficiency Testing in water and wastewater annually.  QC Lab received the results for the 2023 Water Study.  We are excited to report that QC Lab staff received a Certificate of Excellence for achieving 100% acceptable data.


Proficiency Testing (PT) is a process designed to evaluate a laboratory’s performance, testing accuracy, and overall practices.  PT is a means of assessing a lab’s performance under a set of controlled conditions through the analysis of samples provided by an accredited PT provider.

Typical PT includes an evaluation of:

  • Sample handling protocols
  • Laboratory reporting practices
  • Accuracy in testing and reporting correct analytical results within specified acceptance limits

QC Lab was required to analyze the following parameters:

  • Fluoride
  • Total Coliform
  • coli
  • Heterotrophic Plate Count

A copy of the certificate is below.