I can understand why you’re worried, especially after reading about naphthalene toxicity online. The internet tends to show the worst-case scenarios. The good news is that what you’ve described is very unlikely to cause serious poisoning, particularly if your daughter is completely well after a week of drinking the water. Naphthalene is indeed toxic, but almost all severe cases in children occur when they accidentally ingest mothballs directly (eat or suck on them), not from trace environmental exposure. Even though you could smell or taste it in the water, that doesn’t necessarily mean that toxic amounts were present. If significant naphthalene toxicity had occurred, children usually develop symptoms such as: * Vomiting or abdominal pain * Unusual tiredness or lethargy * Yellow discoloration of the eyes or skin (jaundice) * Dark or cola-colored urine * Pale appearance due to anemia * Shortness of breath or difficulty breathing

Naphthalene balls are toxic…even though child is stable you should visit pediatrician once and get checked.

Hello If the child is active with no symptoms you can be reassured..but you need to be vigilant if child has vomiting, complains of pain abdomen, child is drowsy or extremely irritable you need to consult immediately..

Napthalene  is toxic ... it can cause immediate gastrointestinal , neurological , blood related symptoms... if you all are without symptoms least you need some concerned investigations .... consult some physician , pediatrician

Visit  physically to nearby pediatrician.

If naphthalene no balls are consumed directly it can cause neurological problems.consuming water which had balls in it may less likely to cause symptoms

Any ingestion of foreign substance would cause reaction in 6-12 hour. If the child is fine and no any symptoms then nothing to worry.

If child is having any signs symptoms then kindly show once physically to nearby pediatrician

It's toxic.consult to Pediatrician immediately

It's been already 6 days so at present no symptoms means then nothing to worry

The fact that you could smell or taste naphthalene suggests some vapour may have been present, but serious poisoning from this type of indirect exposure is unlikely, especially if your daughter has remained well throughout the week. Since you have already removed the naphthalene balls, stop using that water for now. Flush the purifier thoroughly and replace the filters if the manufacturer recommends it. Use a fresh water source until the smell and taste have completely disappeared. If your 6-year-old has no symptoms (vomiting, abdominal pain, excessive sleepiness, yellowing of the eyes/skin, dark urine, or difficulty breathing), she does not require routine blood tests or an emergency check-up. Simply observe her over the next 24–48 hours. Seek medical attention immediately if she develops persistent vomiting, yellow eyes, dark urine, unusual tiredness, or pallor, as these can rarely indicate red blood cell breakdown (hemolysis), particularly in children with G6PD deficiency. Overall, based on your description, the risk of significant toxicity is low, and serious delayed effects are not expected once the exposure has stopped.