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Take the following into consideration the next time you consider letting your pet into a stream:
Four Mile Run is impaired for elevated levels of bacteria. It is not safe for human activities where water may be ingested, such as swimming.
If a stream appears to be discolored, visit the Report Stream Pollution page. The images on this page may help you determine the cause of the discoloration and whether you should call the Emergency Communications Center (703-558-2222).
When outside of a County-sanctioned, off-leash dog park, all dogs in the County must be on a leash. Rabies vaccination tags and County Dog License tags must always be secured on your dog’s collar.