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Water Quality Division > Programs > Public Water Supply > Consumer Confidence Reports

Consumer Confidence Reports

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is an annual report submitted by Community Water Systems (CWS) to their consumers, customers and the DEQ.  This report details the overall quality of their drinking water for the previous year.

A CCR must contain:

  • Water system information

  • Sources of the drinking water

  • Definitions such as: Maximum Contamination Level (MCL), Maximum Contamination Level Goal (MCLG), and if needed Treatment Technique (TT) and Action Level (AL)

  • Most current detected contaminants within the last 5 years.

  • Compliance with drinking water regulations

  • Required educational information

CCR Reports Due by July 1st
The CCR containing that previous years data must be delivered to customers and the Oklahoma Department of Environmental Quality no later than July 1st.  If you are a wholesaler, you should provide monitoring results to the systems that purchase your water by April 1st.  These results are needed by the purchasing systems so that they may be incorporated into their own CCR.
The intended audience of the CCR is the consumer of the water and it should be written on a level that may be easily understood by the layperson.  The CCR is a great opportunity for the Community Water System to explain to their customers what it takes to produce quality water.  If system improvements will be taking place in the future, the annual CCR is a chance to educate those who will foot the bill about what will need to be done and the costs involved for the improvements.  It is also an excellent time for the system to brag about the kind of job its employees are doing.  The CCR could possibly be the deciding factor in the location of new industries in the community.


  • April 1st -Final date for wholesale systems to provide sample data and violations to purchasing systems

  • July 1st -Final date to distribute CCR to consumers and send CCR to DEQ

  • October 1st -Final date to submit a CCR Certification of Completion (COC) form to DEQ

Certificate of Completion
Depending upon a Community Water System’s population or their resources to post on a publicly accessible website the delivery options can be determined through the Certificate of Completion.

Option 1:

  • All systems: May email or post on a publicly accessible Internet site
If this is not an option, then choose one below that applies to your system

Option 2:

  • Large Systems (100,000+): Direct mail and post on the internet
  • Medium Systems (10,000-100,000): Mail or direct delivery
  • Small Systems (500-10,000): Mail or publish in a local newspaper in its entirety along with a statement that it will not be mailed
  • Smaller Systems (<500): Must notify customers at least once a year that the CCR is available from them upon request

Tools to prepare a Consumer Confidence Report

Steps to complete the CCR
  1. Obtain Consumer Confidence Data for your Water System
    • Visit Oklahoma’s Drinking Water Watch
    • Click the Review Consumer Confidence Data button
    • Select water system name, or enter your PWS ID number (include the OK)
    • Select the year
    • Adjust the format if needed.
    • Click the Generate Report button
  2. EPA’s CCR iWriter

    The CCR iWriter ( is EPA’s online application that enables you to produce a CCR by simply answering questions and filling in your system’s information and data online.

    The CCR Certification of Completion (COC) form is to be completed each year to certify that the water system completed and distributed the CCR in accordance with federal regulations

Tips for Writing Your CCR

  1. Be sure to include the name and contact number of the person designated to answer questions from the public.
  2. Public Water System name and ID number must be included in the CCR title.
  3. Include a sentence that tells that status of Source Water Assessments that are being undertaken or planned.
  4. Make sure that sample results are presented in the same units as the MCL (Maximum Contaminate Level).
  5. Systems that take 20 or more Lead and Copper samples must include the educational statement on Lead if their 95th percentile exceeds the Action Level (AL) for Lead.
  6. Systems must show the number of sites that have exceeded the Action Level (AL) for Lead or Copper.
  7. Include the sample date if the result is for a year other than the report year.
  8. Violations must be acknowledged and explained.  What, when, where, why and how the problem was or is being corrected.  Mandatory health effects language must be included.
  9. The CCR must be both written and distributed by July 1st to those that use the water.  Wholesale systems must be delivered to their Purchase systems by April 1st.  One copy of the CCR needs to be sent to the DEQ along with a Certification of Completion (CoC).
  10. The CCR rule requires that community water systems (CWS) report monitoring results when unregulated contaminants are detected (40 CFR 141.151).
  11. New Electronic eCCR Best Practices Guide:
  12. There may be data not included in the Consumer Confidence Data.  Double check your records for additional data to include in your CCR.

Ways to send your CCR and CoC to the DEQ

  • Mail: P.O. Box 1677
    OKC, OK 73101-1677
  • Fax: (405) 702-8101
  • Email: