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News & Press: COVID-19

Coliform Testing - Email from IEPA

Sunday, March 22, 2020   (0 Comments)
Posted by: Laurie Dougherty
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Subject: Coliform testing



We have been receiving a lot of phone calls concerning coliform sampling whether it’s still required and what to do if they have sites that are inaccessible.  Please understand that the Agency does not have the authority to waive these sampling requirements or any other regulatory requirements related to the Safe Drinking Water Act.  The work that you all do everyday is protective of public health, that does not change even while facing a different challenge to public health.


For the next several months the Agency will use enforcement discretion regarding sites selected for sampling.  If a water system has a site that is not available at this time or they are not comfortable collecting a coliform sample from a certain location a different site may be selected.


The water system will still be required to collect their minimum number of sample sites.  They should make every attempt to sample from each pressure zone (if applicable).  Sample sheets should be marked as Routine or Repeat as applicable. If a site is selected that is not on the current site plan they must include the address on the sample sheet – and they must still record a chlorine residual.  The sample will be uploaded as a routine extra with the sample address in the notes field. 


If a water system indicates that they want to continue using one of the new locations they may contact their Regional Office and formally add it to their site plan.


Andrea Rhodes

Compliance Assurance Section

Public Water Supplies/Illinois EPA

phone 217-524-8113


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