6.5.1.3 Equipment and Supply Verification
The availability of equipment and supplies for remediation procedures shall be verified by the QUALIFIED OPERATOR at least weekly.
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6.5.1.4 Plan Review
The response plan shall be reviewed at least annually and updated as necessary. -
6.5.1.5 Plan Availability
The response plan shall be kept on site and available for viewing by the AHJ. -
6.5.2 Aquatic Venue Water Contamination Response
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6.5.2.1 Closure
In the event of a fecal or vomit contamination in an AQUATIC VENUE, the QUALIFIED OPERATOR shall immediately close the AQUATIC VENUE to swimmers until remediation procedures are complete. -
6.5.2.1.1 Closure Includes
This closure shall include the affected AQUATIC VENUE and other AQUATIC VENUES that share the same RECIRCULATION SYSTEM. -
6.5.2.2 Physical Removal
Contaminating material shall be removed (e.g., using a net, scoop, or bucket) and disposed of in a sanitary manner. -
6.5.2.2.1 Clean / Disinfect Net or Scoop
Fecal or vomit contamination of the item used to remove the contamination (e.g., the net or bucket) shall be removed by thorough cleaning followed by DISINFECTION (e.g., after cleaning, leave the net, scoop, or bucket immersed in the pool during the disinfection procedure prescribed for formed-stool, diarrheal-stool, or vomit contamination, as appropriate). -
6.5.2.2.2 No Vacuum Cleaners
Aquatic vacuum cleaners shall not be used for removal of contamination from the water or adjacent surfaces unless vacuum waste is discharged to a sanitary sewer and the vacuum equipment can be adequately disinfected. -
6.5.2.3 Treated
AQUATIC VENUE water that has been contaminated by feces or vomit shall be treated as follows: 1) Check to ensure that the water’s pH is 7.5 or lower and adjust if necessary; 2) Verify and maintain water temperature at 77°F (25°C) or higher; 3) Operate the filtration/RECIRCULATION SYSTEM while the POOL reaches and maintains the proper free CHLORINE concentration during the remediation process; 4) Test the CHLORINE residual at multiple sampling points to ensure the proper free CHLORINE concentration is achieved throughout the POOL for the entire DISINFECTION time; and 5) Use only non-stabilized CHLORINE products to raise the free CHLORINE levels during the remediation. -
6.5.3 Aquatic Venue Water Contamination Disinfection
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6.5.3.1 Formed-Stool Contamination
Formed-stool contaminated water shall have the FREE CHLORINE RESIDUAL checked and the FREE CHLORINE RESIDUAL raised to 2.0 mg/L (if less than 2.0 mg/L) and maintained for at least 25 minutes (or an equivalent time and concentration to reach the CT VALUE) before reopening the AQUATIC VENUE. -
6.5.3.1.1 Pools Containing Chlorine Stabilizers
In AQUATIC VENUE water that contains cyanuric acid or a stabilized CHLORINE product, water shall be treated by doubling the inactivation time required under MAHC Section 6.5.3.1. -
6.5.3.1.2 Measurement of Inactivation Time
Measurement of the inactivation time required shall start when the AQUATIC VENUE reaches the intended free CHLORINE level. -
6.5.3.2 Diarrheal-Stool Contamination
Diarrheal-stool contaminated water shall: 1) Check the FREE CHLORINE RESIDUAL and then raise the FREE CHLORINE RESIDUAL to 20.0 mg/L and maintain for at least 12.75 hours (or an equivalent time and concentration to reach the CT VALUE) before reopening the AQUATIC VENUE, or 2) Circulate the water through a SECONDARY DISINFECTION SYSTEM to theoretically reduce the number of Cryptosporidium OOCYSTS in the AQUATIC VENUE below one OOCYST/100 mL as outlined in MAHC Section 4.7.3.3.2.4. -
6.5.3.2.1 Pools Containing Chlorine Stabilizers
In AQUATIC VENUE water that contains cyanuric acid or a stabilized CHLORINE product, water shall be treated by: 1) Lowering the pH to 6.5, raising the FREE CHLORINE RESIDUAL to 40 mg/L using a non-stabilized CHLORINE product, and maintaining at 40 mg/L for at least 30 hours or an equivalent time and concentration needed to reach the CT VALUE. (Measurement of the inactivation time required shall start when the aquatic venue reaches the intended FREE chlorine level.) or; 2) Circulating the water through a SECONDARY DISINFECTION SYSTEM to theoretically reduce the number of Cryptosporidium OOCYSTS in the AQUATIC VENUE below one OOCYST/100 mL as outlined in MAHC Section 4.7.3.3.2.4 or; 3) Draining the AQUATIC VENUE completely. -
6.5.3.3 Vomit-Contamination
Vomit-contaminated water shall have the FREE CHLORINE RESIDUAL checked and the FREE CHLORINE RESIDUAL raised to 2.0 mg/L (if less than 2.0 mg/L) and maintained for at least 25 minutes (or an equivalent time and concentration to reach the CT VALUE) before reopening the AQUATIC VENUE. -
6.5.3.3.1 Pools Containing Chlorine Stabilizers
In AQUATIC VENUE water that contains cyanuric acid or a stabilized CHLORINE product, water shall be treated by doubling the inactivation time required under MAHC Section 6.5.3.3. -
6.5.3.3.2 Measurement of the Inactivation Time
Measurement of the inactivation time required shall start when the AQUATIC VENUE reaches the intended free CHLORINE level. -
6.5.3.4 Blood-Contamination
Blood contamination of a properly maintained AQUATIC VENUE’S water does not pose a public health risk to swimmers.