State of New Mexico > Environment Department > Swimming Pool Program

Recreational Water Illness (RWI)

Cryptosporidium (or “crypto”) is a germ that causes diarrhea. It is spread when someone who has crypto uses your pool. Since crypto is chlorine resistant, even well maintained pools can spread crypto. To help prevent the spread of crypto, the Center for Disease Control (CDC) recommends the weekly hyperchlorination of all pools. Click here to see CDC’s Guideline on Hyperchlorination ().

To view CDC's Fecal Incident Response Recommendations click here ().

For more information on prevention of Recreational Water Illness (RWI) outbreaks associated with swimming pools, water parks, hot tubs, lakes and rivers, click the following:







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