Division of Environmental and Community Health

Maine Center for Disease Control & Prevention

A Division of the Maine Department of Health and Human Services

DHHSMeCDCEnvironmental and Community HealthDrinking WaterPublic Water SystemsSeasonal Water Systems

Seasonal Water Systems

Seasonal Water Systems are water systems that operate for only a portion of the calendar year. These systems generally shut down at the end of each operating season. Examples include campgrounds, country clubs, sporting lodges and camps, marinas, golf courses, and ski areas.


Seasonal facilities that are open for any portion of a calendar quarter are responsible for all water tests required in that quarter. Sampling quarters follow standard calendar time periods:

  • First quarter: January 1st thru March 31st
  • Second quarter: April 1st thru June 30th
  • Third quarter: July 1st thru September 30th
  • Fourth quarter: October 1st thru December 31st

A sample may be collected on any day during a given quarter.

If you are operating a seasonal facility, the DWP waives any quarterly water-testing requirement for a quarter if a business closes on or before the 15th of the first month of that quarter. Please note that this waiver applies only to quarterly water tests.

Quarterly Test Waivers for Seasonal PWS

 System Closing Date  Quarterly Tests Waived
 January 1 - 15  January 1 - March 31
 April 1 - 15  April 1 - June 30
 July 1 - 15  July 1 - September 30
 October 1 - 15  October 1 - December 31

Water System Startup and Shutdown

Forms and Guidance

Additional Resources

Updated 5/12/2023