Recreational Bathing Water


Garden State Laboratories, Inc. is one of the largest recreational bathing water testing laboratories on the east coast.  Recreational bathing water includes public swimming pools, aquatic facilities, lakes, beaches, whirlpools, spas and hot tubs.


The New Jersey regulations require all public bathing facilities to be tested weekly for bacteria by a State Certified Laboratory.  Pools, whirlpools and aquatic facilities are also required to have their disinfectant chemicals and pH analyzed along with the sample collection.


With over 75 years of water testing experience we can help you with many types of water quality issues.  We are often asked about bacteria in water, what type of disinfectant to use and what are acceptable levels.  Feel free to email us with your questions here and we will try to help.  Please be as detailed as possible.

The Care & Feeding of Pool Waters

Chlorine, bromine, and other chemicals are used to help maintain a healthy environment for recreational bathing waters. The proper chemistry (including pH) is crucial to maintaining the system as well as keeping its users safe.  For more detailed information, please visit the links below.

Chlorine & Other Disinfectants


Chlorine, Bromine, & pH testing in pool water (Tablets vs. Liquids)

Chlorine Stabilization & Cyanuric Acid

Sample Requests

Sampling requests are available Monday through Friday excluding holidays.

During the summer season, sampling can also take place on weekends.

To request a sample, or resample, please 

Helpful Information & Links

Here are links to other websites that may contain helpful information for the care and treatment of your recreational bathing facility.  Garden State Labs is not the author of the following webpages and is not responsible for any information found on these pages.


New Jersey State Department of Health Public Recreational Bathing Regulations.  Referred to often as simply “the Code”, these regulations are applicable throughout all of New Jersey as part of the NJ State Sanitary Code, Chapter IX N.J.A.C. 8:26. 


The Professional Pool Operators of American supported swimming pool and waterpark operators. It had many informational articles. For an interesting article about chlorine stabilization and cyanuric acid, click here.


The Environmental Science and Technology article on The Effect of Cyanuric Acid on the Inactivation of Cryptosporidium parvum under Hyperchlorination Conditions.  This addresses the effects chlorine stabilizer has on the effectiveness of chlorine disinfection.


The Centers for Disease Control's instructions on what to do in case of fecal accidents.  The CDC has also published Reports on Cryptosporidiosis and Giardiasis Surveillance in the United States. These reports include exposures in Recreational Bathing Waters and note how there is an increase in these diseases during the summer months.


The Centers for Disease Control's website on Pool Safety.


Pool & Hot Tub Alliance has information about pool operations and training. It lists a schedule for Certified Pool Operator (CPO) courses.

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