Avoid swimming or diving in warm freshwater lakes, rivers, and ponds
Keep your head above water in warm freshwater
Do not jump or dive into warm freshwater
Avoid stirring up sediment in warm freshwater
Use nose clips or keep water out of your nose when in warm freshwater
Do not use untreated tap water for nasal rinsing or sinus rinsing
Use only sterile, distilled, or previously boiled water for nasal rinsing
Follow proper instructions for neti pots, sinus rinses, and nasal irrigation devices
Use only properly maintained and disinfected swimming pools and water parks
Avoid water-related activities in hot springs and poorly maintained warm water sources
Supervise children closely around warm freshwater
Check local water advisories before swimming in natural freshwater
Seek immediate medical care after freshwater exposure if severe headache, fever, nausea, vomiting, or stiff neck develops