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Pool/Spa Compliance Testing


Certified by the Indiana State Department of Health for public health laboratory service in the bacteriological examination of public waters. (Laboratory No. M-49-5)

Pool/Spa Water Testing for Health Department Compliance

Micro Air, Inc. is a full service, state certified (M-49-5) water testing laboratory. Our primary goal is to keep public and semi-public pools in compliance with public water testing requirements in their county, which includes weekly bacteriological testing.  We offer analysis and reporting to you and your local health department on a weekly basis, along with a courier and collection service (an additional fee applies).  

*Samples must be received in the laboratory within 24 hours of sample collection.*

Method of Analysis:  EPA Approved MMO-MUG Presence/Absence Test Procedure using Colilert P/A for the detection of Total Coliform/E. coli, Method SM9223B and the SimPlate for Heterotrophic Plate Count Test Procedure, Method SM9215B.

Turn Around Time:  Total Coliform/E. coli – 24 hours, Heterotrophic Plate Count – 48 hours

Pool Water Sampling Instructions

Additional Pool/Spa Water Testing

Total Hardness

Total hardness in swimming pools is a measure of all the dissolved minerals such as calcium, magnesium and sodium.  The recommended level for calcium hardness is 200 - 400ppm, and both high and low levels result in swimming pool problems including scale formation on the pool surfaces as well as scaling in the pipes, plumbing and filter.  In extreme cases the water becomes dull and cloudy with the calcium precipitating out into the water rather than onto a surface. High calcium levels will also irritate swimmers, causing sore eyes in particular.

Method of Analysis:     Hardness (Total & Calcium) using Drop Count Titration, Hach Cat. No. 145700

Turn Around Time:  Next Day



Algae are tiny plants that bloom and grow in swimming pools if nutrients are present and a sufficient level of free chlorine is not maintained.  Algae can become a problem when it converts sunlight into food, releasing waste that becomes the feeding grounds for unwanted and harmful bacteria and other micro-organisms.

Method of Analysis:     Hach BART Tester for Micro-Algae Cat. No. 2432709

Turn Around Time:  4-24 Days



Pseudomonas aeruginosa is a bacterium commonly found in spa water.  Because hot tubs and spas have warmer water than pools, chlorine or other disinfectants used to kill germs (like Pseudomonas aeruginosa) break down faster.  If allowed to reach unsafe levels, the presence of pseudomonas can cause several health problems including skin rashes and other skin infections, ear infections or even urinary tract infections.

Method of Analysis:     Growth on Hardy Diagnostics Pseudomonas Isolation Agar, Cat. No. G145