Louisville Water Company has over 24,000 fire hydrants in its service area. These hydrants are flow-tested and maintained every year by dedicated crews to ensure they are in good working order. This testing activity typically occurs April through October and may peak during summer months. During the winter, our crews provide special attention to hydrants to safeguard against freezing.
The tests help determine that each hydrant has sufficient flow for firefighting. The hydrants are flushed to remove sediment. Residents in the nearby work area may experience a temporary discoloration or slight metallic taste in their drinking water - this is NOT a health issue. The water will clear on its own within a few hours after the testing is completed.
You can help by making sure there are no obstructions, like landscaping or decorations, within 15 feet of the hydrant. This allows workers to easily access the hydrant without causing any damage. To learn more about property owner responsibilities regarding fire hydrants, check with your county for specific ordinances. Louisville Metro Fire Hydrant Ordinance (PDF).
Signs that fire hydrant testing is being conducted in your area:
- Fire, Louisville Water or Public Works vehicles on your street
- Water on the ground around the hydrant
- Slightly discolored water
- Air sputtering from the faucet