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Division of Environmental and Community Health

Maine Center for Disease Control & Prevention

A Division of the Maine Department of Health and Human Services

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Reporting Test Results

All public water systems are required to regularly sample and test their water to ensure that it meets federal and state drinking water standards, and is safe to drink. Water tests must be done by a certified laboratory, and the test results must be submitted to the DWP by tenth (10th) of the month following the close of the monitoring period. All results of laboratory analyses for compliance purposes must be submitted to the DWP by the certified laboratory contracted by the public water system to analyze the samples.

Public water systems should be sure to include their PWSID# and water system name on the Chain of Custody (sample collection) form and be sure to indicate to the laboratory that the sample is a compliance sample and the results must be sent to the DWP.

The Compliance Section staff members review all analytical data and allocate violations to systems, which exceed the maximum contamination level or fail to test the water supply when required to do so.

Required Testing Reports

Required Testing Reports, also known as Sampling Schedules, are mailed out to all public water systems at the beginning of each year, or the beginning of the operating period if your public water system operates seasonally. If you are unsure of your sampling schedule or have questions, you should call your Compliance Officer at 287-2070. You can also access your required testing report online by clicking here.

Missing a Sampling Deadline

If you miss a sampling deadline, it is important that you call and notify the DWP of the oversight as soon as you become aware of the problem. You will also receive a 'Failure to Monitor' Violation, and will be required to conduct a Public Notification. Your Compliance Officer will provide you with the Public Notification paperwork and specific requirements you must perform.

Exceeding the Maximum Contaminant Level (MCL)

If the results of any required water test exceed the Maximum Contaminant Level (MCL) for that contaminant, your public water system will be issued a Violation and will be required to conduct a Public Notification. Your Compliance Officer will provide you with the Public Notification paperwork and specific requirements you must perform.

Monthly Operating Reports

All public water systems that add a chemical(s) to their water must submit a Monthly Operating Report (MOR) to the Drinking Water Program. For more information or for electronic versions of MORs, visit the Monthly Operating Report page.

Consumer Confidence Reports

All community public water systems are required to prepare and provide their customers with an annual report on the quality of their drinking water. This report is called a Consumer Confidence Report (CCR). To learn more about the reporting requirements for CCRs, visit the Consumer Confidence Reports page.