Garden State Laboratories, Inc.

BACTERIOLOGICAL AND CHEMICAL TESTING
Analytical Excellence Since 1943

New Chlorine Stabilizer (Cyanuric Acid) Recommendations

The Centers for Disease Control has published in June 2015, a scientific article on the effect of chlorine stabilizer (Cyanuric Acid - CYA) on the inactivation by chlorine of the microorganism, Cryptosporidium.  Based upon this article Garden State Labs, Inc. is recommending that if CYA is utilized, CYA be used at 10 parts per million (mg/l) and not exceed 20 ppm.  If used, we recommend that CYA be tested weekly.

Effect of Cyanuric Acid on the Inactivation of Cryptosporidium parvum under Hyperchlorination Conditions:  Jennifer L. Murphy,  Michael J. Arrowood,  Xin Lu,  Michele C. Hlavsa,  Michael J. Beach,  and Vincent R. Hill ;  Waterborne Disease Prevention Branch, Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, United States: (c) American Chemical Society, Environmental Science and Technology 2015, 49, 7348−7355

 
NJ State Public Recreational Bathing Water Standards

These are the current NJ State Department of Health Public Recreational Bathing Water Standards, N.J.A.C. 8:26-1 et seq and the NJDEP.  The free chlorine and total alkalinity standards are from the American National Standards Institute (ANSI) American National Standards for Public Swimming Pools, ANSI/NSPI-1 2003, Appendix A.


NEW JERSEY STATE BACTERIOLOGICAL AND CHEMICAL STANDARDS    
SWIMMING POOLS:    
PARAMETER ACCEPTABLE IDEAL
pH 7.2-7.8 7.4-7.6
FREE CHLORINE, ppm 1.0-10.0 2.0-4.0
BROMINE, ppm 2.0-10.0 4.0-6.0
COMBINED CHLORINE, ppm

less than 0.2

CYANURIC ACID, ppm 10-100 30-50
Cyanuric acid is prohibited in indoor pools, whirlpools, spas, and hot tubs.
STANDARD PLATE COUNT

200 per ml

TOTAL COLIFORM COUNT

less than 1 per 100 ml

TOTAL ALKALINITY as CaCO3, ppm 60-180 80-100
ppm = parts per million (mg/l)
Physical water quality standards for
swimming pools and wading pools
(a) The pool operator shall monitor water clarity
daily.
(b) When in use, the deepest portion of the pool
floor shall be clearly visible from the swimming pool's
edge.
IF A SAMPLE IS BACTERIOLOGICALLY UNSATISFACTORY, THEN THE LOCAL HEALTH DEPT. MUST BE CONTACTED IMMEDIATELY AND A RESAMPLE MUST BE TAKEN AS SOON AS POSSIBLE. IF THE RESAMPLE IS UNSATISFACTORY, THEN THE POOL MUST BE CLOSED UNTIL A SATISFACTORY SAMPLE IS ANALYZED.
WHIRLPOOOLS, SPAS & HOT TUBS    
PARAMETER ACCEPTABLE IDEAL
pH 7.2-7.8 7.4-7.6
FREE CHLORINE, ppm 2.0-10.0 3.0-5.0
BROMINE, ppm 2.0-10.0 4.0-6.0
COMBINED CHLORINE, ppm

less than 0.2

NONE
CYANURIC ACID, ppm 10-100 30-50
Cyanuric acid is prohibited in indoor pools, whirlpools, spas, and hot tubs.
STANDARD PLATE COUNT

200 per ml

Pseudomonas aeruginosa

less than 1 per 100 ml

TOTAL ALKALINITY as CaCO3 ppm 60-180 80-100
ppm = parts per million (mg/l)
IF A SAMPLE IS BACTERIOLOGICALLY UNSATISFACTORY, THEN THE LOCAL HEALTH DEPT. MUST BE CONTACTED IMMEDIATELY AND THE WHIRLPOOL, SPA OR HOT TUB MUST BE CLOSED, DRAINED, DISINFECTED, REFILLED & RESAMPLED. IF THE RESAMPLE IS UNSATISFACTORY THEN THE WHIRLPOOL, SPA OR HOT TUB MUST REMAIN CLOSED UNTIL A SATISFACTORY SAMPLE IS ANALYZED.
BEACHES    
PARAMETER ACCEPTABLE  
FECAL COLIFORM in Lakes and other non-marine bathing areas

200 per 100 ml

ENTEROCOCCI in Ocean and Bay Recreational Beaches

104 per 100 ml

IF A SAMPLE IS BACTERIOLOGICALLY UNSATISFACTORY, THEN THE LOCAL HEALTH DEPT. MUST BE CONTACTED IMMEDIATELY AND A RESAMPLE MUST BE TAKEN AS SOON AS POSSIBLE. IF THE RESAMPLE IS UNSATISFACTORY, THEN THE SWIMMING AREA MUST BE CLOSED UNTIL A SATISFACTORY SAMPLE IS ANALYZED.



Last update 6/24/15

Email: info@gslabs.com

Return To GSL Home Page