Water Purification / Distribution

Frozen Pipes - The Metropolitan Washington Council of Government has information on preventing this from happening in your home on their Protect Your Pipes web page.

Request a Fire Hydrant Flow Test
Please complete the online Request for Fire Hydrant Flow Test.  Your submission will be reviewed and you will be contacted with information about the processing of your request.

Bulk Water Pamphlet
Lead & Copper Monitoring
Water Treatment Plants

  1. Notices
  2. Fluoridated Water Supplies
  3. Source Water Assessments
  4. Water Quality Reports

                                          ATTENTION CLOVER HILL III RESIDENTS

                                      Frequently Asked Questions (FAQs) - Printable PDF


Clover Hill III Water System – January 2020 Status Report

Our most recent sampling has shown the Clover Hill III water system remains in compliance for Haloacetic Acids (HAA5).  The most recent calculation of the Locational Running Annual Average (LRAA) is below the federal Maximum Contaminant Level (MCL) of 60 parts per billion (ppb). The LRAA is calculated for each sample site by averaging test results from samples collected in February, May, August, and November of each year.

The current LRAA for HAA5 is 45.5 ppb.

With winter upon us, staff will only be doing extremely limited hydrant flushing and they have removed all of the automatic flushing devices to prevent freezing.  Regular flushing will not resume until we start to see warmer temperatures later this spring.

We are still awaiting the planned improvements to the treatment processes at the City of Frederick’s Fishing Creek water source and Lester Dingle Water Treatment Plant. Once complete, this project should result in further reductions in HAA5 concentrations.

We appreciate your patience and cooperation while we work to address this issue. 

For more information, please contact the Frederick County Division of Utilities and Solid Waste Management at 301-600-1825.

Current Water Restrictions

None at this time


The Water Purification/Distribution Department is responsible for the operation of the County's water treatment plants and distribution systems.  

The County's primary water treatment facilities are staffed 24 hours per day, 7 day per week. Smaller satellite facilities are staffed to provide operator attention several hours per day, 7 days per week.  

This Department's certified operators provide routine daily operation of the County's water supply infrastructure to ensure that customers of the County's Public water systems receive water that continually complies with Federal Safe Drinking Water Act (SDWA) requirements.