47 Old Yarmouth Road, Hyannis, MA. 02601

Hyannis Water System Flushing Program



(Weather permitting)


Flushing signs will be posted in the areas of work


After flushing let the cold water run for a few minutes.


FOR QUESTIONS, CALL (508)775-0063




Flushing Schedule by Weeks and General Grid Areas

Starting April 2, 2018
(Weather Permitting)




Week #1 Complete


Grids 1A and 2A Include areas: Rte 28 east to Yarmouth Line; West to Spring Street and Ridgewood Ave; South to Main Street. Yarmouth Road, Old Yarmouth Road north to Hyannis Village line.


Week #3


Grids 3A and 4A Include areas: Main Street and Yarmouth Road to Hyannis Village line to Ocean Street; South to Kalmus Beach; West to Gosnold Street to Harbor Road.


Week #4


Grid 3B Includes areas: Steven Street: South to Stetson Street: East to Old Colony Road; West to West Main Street rotary.


Week #5


Grid 4B Includes areas: Southgate Street; South to Ocean Ave; East to Hawes Avenue; West to Greenwood Avenue.

Grid 1B Includes areas Airport Way: South to Barnstable Road north of airport rotary; West to Plant Road; East to Mary Dunn Road.


Week #6



Week #7


Grid 1C Includes areas: Festival Plaza; South to Corporation Road; West to Castlewood; East to Airport Road.

Grid 1D Includes areas: North to Old Strawberry from the Hyannis Village line; South to Midway; West to Hyannis Village line; East to Statice Lane to Sunbeam Drive.




Should you have any questions or need additional information please let us know.


Thank you,

Mike Leahy,

Operations Manager, SUEZ

Hyannis Water System




Question 1: What is flushing?

Answer 1: Flushing is a method to clean the water main pipe by using high water velocity to “flush-out” sediment and minerals that are building up over time.

Question 2: How does this flushing happen?

Answer 2: The high water velocity is created by opening fire hydrants in the street. In this way the whole water main pipe gets cleaned systematically.

Question 3: What other benefits does this flushing have?

Answer 3: The other benefit is the testing of the fire hydrants to make sure they operate properly.

Question 4: What does the Hyannis Water System customer have to do?

Answer 4: If the water is discolored, let the cold water run for a few minutes to clear the water line. Many homes have an outside spigot which generally is your first cold water tap. Starting with this tap first will produce quicker results to the rest of your cold water taps.

Question 5: Is flushing a health hazard?

Answer 5: Flushing is not a health hazard. The temporary discoloration of the water is an unavoidable effect of flushing with an aesthetic value only.

Question 6: Should I do laundry when the flushing crew is working in my area?

Answer 6: Hyannis Water System customers should refrain from doing laundry during flushing operations.

Customers are encouraged to call the Hyannis Water System office with any concerns and questions at (508)775-0063.


Water Supply Division
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