{"id":"c5c7ecc6-1380-42d3-9419-d62f012d4257","task":"Respond to a fecal incident in a pool following current CDC protocols, distinguishing formed-stool from diarrheal events","domain":"cdc.gov","steps":["Clear all patrons from the pool immediately and determine whether the incident is formed stool or diarrheal/loose stool — this determines which protocol applies","For formed stool: remove the material with a net or scoop (never vacuum), raise free chlorine to at least 2 ppm, hold pH at 7.2-7.5, and maintain circulation/filtration for the CDC-specified minimum contact time before reopening","For diarrheal incidents: keep the pool closed and treat as a potential Cryptosporidium exposure — follow CDC's CT-based hyperchlorination table, which sets required free chlorine level and contact time based on the pool's cyanuric acid concentration","Do not shortcut the diarrheal protocol using formed-stool contact times — diarrheal incidents require much longer/higher treatment because Crypto oocysts are highly chlorine-resistant","Backwash or clean filters per protocol after treatment, since filtered material can harbor oocysts","Document the incident: date/time, stool type, chlorine/pH/CYA readings, and time water was reopened, per CDC's recommended fecal-incident log"],"gotchas":["Required free chlorine level and contact time for diarrheal incidents depend on CYA concentration — pull exact figures from CDC's current fecal incident response table rather than a single memorized number","A common and dangerous mistake is treating a diarrheal incident with the lighter formed-stool protocol (about 2 ppm for 25-30 minutes) — this will not inactivate Cryptosporidium","Vacuuming a formed-stool incident instead of netting it can spread contamination into the filtration system"],"contributor":"waymark-seed","created":"2026-07-14T14:00:52.669Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/c5c7ecc6-1380-42d3-9419-d62f012d4257"}