New York State Agricultural Fairground Fact Sheet - Acceptable Alternate Annual Water Supply Start-up Procedures

(Section 7-5.12(e)(2)(ii) of Subpart 7-5 of the NYS Sanitary Code)

April 9, 2009

An owner of an agricultural fairground with an on-site or off-site potable water system that is not subject to continuous water use must ensure that an acceptable annual start-up procedure is completed.

The fairground owner is required to use the annual start-up procedure contained in Section 7-5.12(e)(2)(i) or an alternate procedure approved by the Commissioner of Health as stated in Section 7-5.12 (e)(2)(ii). Start-up procedures including required sampling must be completed at least 15 days prior to opening for the season.

Approved alternative procedures for start-up disinfection are described below. Only the start-up procedure that is specified for the agricultural fairground potable water system type may be used.

  1. Water System Type: On-site Water System Using Chlorine Disinfection.
    1. Flush the well (when applicable) and chlorine contact tanks by running water from a tap nearest the water supply source until the water appears to be free of particulates and discoloration.
    2. Install the chlorination equipment and ensure that it is operational.
    3. Flush all water lines thoroughly utilizing continuous chlorination until a free chlorine residual of at least 2.0 ppm is measured at all taps in the distribution system. Shut off all taps and allow the water to remain undisturbed in the water lines for 24 hours. Evaluate the system for leaks and pressure loss.
    4. If the pressure (20 psi minimum) and chlorine residual (minimum 0.2 ppm) are acceptable, flush the distribution system again until the water appears to be free of particulates and discoloration. Confirm that a free chlorine residual of at least 0.2 ppm is present and then shut off all taps and allow the water to remain undisturbed for another 24 hours.

      *If the system was unable to maintain adequate pressure or a free chlorine residual, correct the problem and repeat steps 2 and 3 before continuing.

    5. After 24 hours (total 48 hours), flush each tap and confirm that a free chlorine residual of at least 0.2 ppm but less than 4.0 ppm is present. Collect at least one water sample for Total Coliform analysis from a representative point in the distribution system for each water source. Submit the sample(s) to a laboratory certified by the New York State Department of Health. Water sample analysis reports must be submitted to the permit-issuing official prior to permit issuance.
  2. Water Source: Off-site Public Water System.
    1. Flush the seasonal use distribution lines with water from the approved off-site system until a detectable free chlorine residual* is present and the water appears to be free of particulates and discoloration. Shut off the taps and allow the water to remain in the lines undisturbed for 24 hours.
    2. After 24 hours, flush each tap until the water appears to be free of particulates and discoloration and confirm that a detectable free chlorine residual* is present. Shut off the taps and allow the water to remain in the lines undisturbed for another 24 hours.
    3. After 24 hours (48 hours total), flush each tap and confirm that a detectable free chlorine residual* is present. Collect at least one Total Coliform water sample from a representative point in the distribution system and submit it to a laboratory certified by the New York State Department of Health. Water sample analysis reports must be submitted to the permit- issuing official prior to permit issuance.

      If no residual appears after continued flushing, please notify the operator of the public water supply and the local health department.