FOSS Swim School Closes Two Swimming Pools Due to Crytosporidium Contamination 


KSTP Oct. 2, 2019

Foss Swim School has temproarily closed its St. Louis Park and St. Paul pools after a student and instructor were confirmed to have cryptosporidium.

The spokesperson said the pools will be closed for two weeks to remediate the water. They are both set to reopen on Oct. 15. The school will drain and refill the pools, and improve some filtration systems. In its 26 years of operation, Foss Swim School has never had a confirmed case of cryptosporidium. 


Symptoms of cryptosporidiosis, which is caused by cryptosporidium, include watery diarrhea, stomach cramps, dehydration, nausea, vomiting, fever and weight loss.


Cryptosporidium, a pathogentic protozoan, can be eliminated with the application of ionized copper, chlorine, UV light, ozonation and reverse osmosis filtration. 

Of these, ionized copper and chlorine are residual sanitizers that circulate thoughout the entire system and are the most cost effective especially when used in combination.


UV, ozonation reverse osmosis, while very effective in eliminating most pathogens, are point-source sanitizers only and the least cost effective alternatives. 

The benefit of filtering all the water as it enters the home or business is that 100% of the water is decontaminated.

The well water treatment systems  will only need to be renewed every 4-5 years after or ~one million gallons of water usage. 

In addition the well water system treatment provides both  sanitation and oxidation which provides a total solution not offered by other companies. 

Two Alternative Well Water Treatment Systems Provide 100% PFC Removal:

The zero backwash system provides 100% PFC removal and is the easiest to maintain  requiring a cartridge exchange after 100,000 gallons and is easily perform by the owner. 

The standard well water treatment system provides  the same benefits as above for applications  with a higher water usage.


In addition, both systems provide electrolytic sanitation and oxidation (see remedies) deliveriing a total well water treatment solution not offered by other companies. 

Zero Backwash System

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