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Water quality parameter sampling

Water quality parameter sampling

All water is corrosive, and water quality parameters (WQPs) are a measure of the chemical and physiological characteristics of water. Measuring water quality parameters are important for evaluating water corrosivity, determining which corrosion control treatment a system might need to install, monitoring the effectiveness of the installed treatment, and for setting future treatment goals. Michigan water supplies that meet one or more of the below requirements are required to collect water quality parameters. Water supplies must collect water quality parameters if they meet one or more of the following:

  • serve more than 50,000 persons,
  • have optimal corrosion control treatment,
  • exceed the lead or copper action level,
  • have a source or treatment change.

The suite of required water quality parameters to be collected are specified in each water supply’s annual monitoring schedule.

Sample reporting

  • MiEHDWIS, raindrop with white background

    Most water quality parameter sample results are reported on a water supply’s Monthly Operational Report (MOR). Water supplies may also use the water quality parameter report template to submit sampling results to EGLE. Choose the appropriate template based on whether a system has corrosion control treatment or not.

    Submit the completed report to EGLE via MiEHDWIS. If you do not have a MiEHDWIS account, the report should be submitted to a EGLE district office e-mail box. The report is due to EGLE by the 10th of the month following each monitoring period.

    Submit report to MiEHDWIS

Training webinar for water quality parameter sampling

  • Water Quality Parameters Monitoring and Management (3/5/25, 1 hour)

    Since 2019, small and medium size systems with corrosion control have been required to sample for a suite of Water Quality Parameters (WQP) at their entry-points-to-the-distribution-system (EPTDS) and in the distribution system. Much has been learned in that time on how to efficiently monitor and manage WQPs and the associated data they generate. This updated webinar discusses WQPs and their purpose; distinguish between WQPs and optimal WQP (OWQP); when and where to monitor; reporting requirements; WQP ranges and excursions; and how compliance is determined. Examples, drawn from experience, will be used to illustrate key points throughout the presentation.