Location and Phone

120 S. Hays Street, Suite 200

Bel Air, MD  21014

410-877-2300

Public water systems are comprised of three categories.

1. Community Water Systems are defined as a water system which consists of at least 15 residential service connections or at least 25 “year-round” residents.  Some examples include Harford County Public Water, Bel Air Public Water, Aberdeen Public Water, and Havre de Grace Public Water systems.

2. Non-Transient Non-Community Water Systems are defined as a water system which consists of at least 25 of the same people at least 4 hours per day, 4 days per week, for at least 6 months of the year.  Some examples include schools, day care centers, and large shopping centers whose water supply is located on the facility’s property.

3. Transient Non-Community Water Systems are defined as a water system which consists of at least 25 people present for at least 60 days of the year. This population of people may change on a daily basis.  Some examples of this category include restaurants, parks, churches, and small shopping centers.

All Public Water Systems are regulated by the Maryland Department of the Environment (MDE). Should you have any questions regarding public water systems please contact the Water Supply Program of MDE at (410)537-3706. For more information about Public Water Systems in Harford County, please refer to the Maryland Department of the Environment website.