FAQs - Hydrant Flushing

Why do we flush hydrants?

Water main flushing is a routine operation done to clean and maintain our water system. During this activity, water is forced through the underground water mains at high speed and flushed out of fire hydrants to remove accumulated sediment. The flushing is done until the water coming through the main runs clear. The town has approximately 280 fire hydrants and flushing is done one section at a time until each section runs clear. This operation can take a few minutes to several hours. Part of the program also involves testing valves and fire hydrants to ensure they are operating properly. 


When do we flush hydrants?

The flushing is required by the NJDEP and is generally completed in the fall and spring.  Flushing has generally been scheduled between the hours of 10 p.m. and 6 a.m. to minimize impacts to water service. Schedules can change if something occurs in the distribution system that requires immediate attention or repairs.


Why do we experience cloudy or colored water?

Maple Shade Utilities utilizes a groundwater source water supply that is treated and filtered to remove iron. Like any water supply, over time a fine layer of sediment can deposit along the walls of the water distribution mains. This harmless natural sediment consists of inorganic material from the distribution piping, and on occasion, it can get stirred up and cause discolored water. Sediment/materials can be stirred up when the pressure or direction of flow of water changes in the water mains, causing the water to appear cloudy or discolored. Common causes include hydrant use, hydrant replacement, hydrant flushing, valve turning, routine maintenance, firefighting, main breaks, service line breaks or nearby construction.  Piping materials consisting of cast iron also have an increased propensity for scaling which increase the frequency of occurrence.


No. There are no health hazards associated with sediment in the water. The sediment is always in our system but is only visible when a change in flow is enough to disturb the sediment. Customers may choose to drink bottled water while they wait for the discoloration to clear. All customers are encouraged to refrain washing clothes if you observe discolored water. If your laundry inadvertently gets stained from discolored water, do not put them in the dryer. Contact Maple Shade Utilities for a free packet of Red-B-Gone. Red-B-Gone is usually successful in removing these types of stains.

Is the water contaminated?


In most cases, the water will clear on its own within two hours or less. If the water does not clear in a few hours or if there is a significant loss of pressure, call Maple Shade Utilities at 856-488-7450 to report the issue.

What should customers do if they experience cloudy water?