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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.

Garden State Laboratories performs the most current and rapid bacteriological analytical methods. Click here for information on these analyses.


With over 80 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.


Click here to view the 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 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

NJDEP's 2021 Cyanobacterial Harmful Algal Bloom (HAB) Freshwater Recreational Response Strategy

Other organizations have made information available on the regulations and procedures for operating your recreational bathing facility. Please visit our Helpful Links page for these informative connections.
For current clients, click below to request a sample collection.
If you would like to begin working with GSL, please click below to request a quote!

Once you have received your quote, click below to activate your account. 

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