§ 7.72.121. Fecal and vomit accident response.
The text of this section must be posted, or kept readily available with daily pool maintenance records, for pool staff to reference in the case of a fecal accident. At such time as a fecal accident occurs at any regulated swimming pool, regulated spa pool, wading pool or other recreational water feature, the facility must be immediately closed and access to the water prohibited. The health officer must be notified of fecal accidents involving diarrhea at such time as they occur. The manager shall immediately make a fecal accident report on a form provided by the health officer. On that form the manager shall record each fecal accident, date and time of the event, time of health officer notification if required, whether the accident involved formed stool or diarrhea, and recording of the chlorine levels and pH at the time of observation of the accident. Before reopening the pool, the manager shall record the pH, the procedures followed in response to the fecal accident (including the process used to increase chlorine levels if necessary), and the contact time. The fecal accident report shall be maintained and kept readily accessible with daily records for inspection by the health officer. The manager shall follow the most current Center for Disease Control and Prevention (CDC) recommended procedures for responding to fecal accidents in chlorinated recreational water venues. Before the facility is reopened for use the manager shall at a minimum take the following steps as referenced from the CDC Fecal Accident Response Recommendations for Aquatics Staff:
For fecal accidents involving solid stool, or for vomit accidents
1.
Direct everyone to leave the facility. If multiple facilities use the same filter—all facilities shall be shut down. Do not allow anyone to enter the contaminated facility(s) until all decontamination procedures are completed.
2.
Remove as much of the fecal material or vomitus as possible using a net or scoop and dispose of it in a sanitary manner. Clean and disinfect the net or scoop. The net or scoop may be disinfected after cleaning by leaving the cleaned net or scoop immersed in the facility during facility disinfection. VACUUMING STOOL FROM THE FACILITY IS NOT RECOMMENDED.
3.
Raise the chlorine to 2 ppm (if less than 2 ppm), and ensure the pH is between 7.2-7.5. This chlorine concentration was selected to keep the facility closure time to approximately thirty minutes. Other concentrations or closure times can be used as long as the CT inactivation value (Figure 1) is kept constant.
4.
Maintain the chlorine concentration at least 2.0 ppm, pH 7.2-7.5, for at least twenty-five minutes before reopening the facility. The health officer may require higher chlorine levels in the presence of chlorine stabilizers such as chlorinated isocyanurates. Ensure that the filtration system is operating while the facility reaches and maintains the proper free available chlorine concentration during the disinfection process.
Figure 1-Giardia Inactivation for Formed Fecal Accident
Chlorine Levels (ppm) Disinfection Time* 1.0 45 minutes 2.0 25 minutes 3.0 19 minutes * ;hg;These closure times are based on a 99.9% inactivation of Giardia cysts by chlorine, pH 7.5, 77° F (25° C). The closure times were derived from the Environmental Protection Agency (EPA) Disinfection Profiling and Benchmarking Guidance Manual. These closure times do not take into account "dead spots" and other areas of poor facility water mixing.
For fecal accidents involving diarrhea:
1.
Direct everyone to leave the facility. If multiple facilities use the same filter—all facilities shall be shut down. Do not allow anyone to enter the contaminated facility(s) until all decontamination procedures are completed.
2.
Remove as much of the fecal material as possible using a net or scoop and dispose of it in a sanitary manner. Clean and disinfect the net or scoop. The net or scoop may be disinfected after cleaning by leaving the cleaned net or scoop immersed in the facility during facility disinfection. VACUUMING STOOL FROM THE FACILITY IS NOT RECOMMENDED.
3.
Raise the free available chlorine concentration to at least 20 ppm and maintain the pH between 7.2 and 7.5. This chlorine and pH level should be sufficient to inactivate Cryptosporidium and should be maintained for at least eight hours, equivalent to a CT inactivation value of 9600 (Figure 2).
4.
Ensure that the filtration system is operating while the facility reaches and maintains the proper chlorine level during disinfection. If necessary, consult an aquatics professional to determine and identify the feasibility, practical methods, and safety considerations before attempting the hyperchlorination of any facility.
5.
Backwash the filter thoroughly after reaching the CT value. Be sure the effluent is discharged directly to waste and in accordance with City of Wichita regulations. Do not return the backwash through the filter. Where appropriate, replace the filter media.
6.
Participants may be allowed back into the facility after the required CT value has been achieved and the chlorine level has been returned to the normal operating range allowed by Section 7.72.120.
Figure 2-Crypto Inactivation Time for Diarrheal Accident
Chlorine Levels (ppm) Disinfection Time 1.0 6.7 days 10 16 hours 20 8 hours 30 6 hours 40 4 hours * ;hg;Figures 1 and 2 are examples to achieve CT values. Disinfection time may be decreased by increasing the chlorine levels to achieve the required CT values.
(Ord. No. 46-592 § 1 (part))