News and Events


Chlorine Water Treatment Starts March 1, 2023 ==> <<  Click here to read Press Release  >>

February 17, 2023

Smithfield, NC – Beginning on March 1, 2023, the Johnston County Water Treatment Plant will temporarily stop feeding ammonia with chlorine for disinfection and start feeding chlorine only for all Johnston County water customers on the Johnston West water distribution system.  The Johnston West distribution system supplies water for many County residents and businesses, which includes Clayton, Wilson Mills, and some customers serviced by various private utilities.  If you have any concerns or need additional information, please contact Johnston County Public Utilities at 919-989-5075.

For Johnston County retail customers, the distribution system is designated on each monthly billing statement.  State and federal regulations require that all public water systems feed chlorine only for at least three weeks each year to insure that no bacteria are present which may have adapted to the ammonia in the water. 

Johnston West customers that use kidney dialysis machines should be aware that the water will contain more chlorine for about five weeks and will return to a chlorine and ammonia mixture on or about April 3, 2023.  The chlorine only water can be toxic to tropical fish.  Most customers will not notice a difference in their water, but some may detect a chlorine odor and might observe a slight color change.  The County will also conduct flushing of the Johnston West water distribution system during this period to speed the removal of chloramines from the system.  The flushing process may result in some minor and temporary discoloration of water that does not affect water quality.  If any related issues cannot be cleared by flushing the lines inside your home, please call 919-989-5075.




County’s Mandatory Year-round Conservation Policy 

We would like to remind all customers of the County’s year-round mandatory conservation policy.  The policy allows for alternate day irrigation for irrigation systems and hose-end sprinklers based on the customer’s address.  Odd number street addresses are allowed to water on Tuesdays, Thursdays and Saturdays, while even number street addresses are allowed to water on Wednesdays, Fridays and Sundays.  No irrigation is allowed on Mondays.  Pool filling days should correspond with allowed irrigation days.  Please visit our website at for the full policy and water conservation suggestions.  


Johnston County Public Utilities

Physical Address:
Land Use Center
309 E. Market Street
Smithfield, NC 27577

Mailing Address:
P.O. Box 2263
Smithfield, NC 27577

  • Email:

  • Phone:
    Main - 919-989-5075
    Pay by Phone - 844-845-2151

    After Hours Emergency - 919-989-5056
  • Fax:
    Business Office - 919-934-0256
    Engineering Office - 919-934-7174
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