Pesticides that enter the distribution system via a cross connection can cause which of the following health effects?

• A. Skin rash and itching
• B. Headache and dizziness only
• C. Nervous system damage, flu-like symptoms, vomiting and nausea
• D. Respiratory failure

Answer: (C)

Pesticide intrusion through a cross-connection means people could ingest contaminated water, and many pesticides are toxic to the nervous system. Exposure can cause neurological effects along with gastrointestinal upset, leading to symptoms like dizziness, headache, vomiting, nausea, and flu-like feelings. This combination best reflects the health impacts from drinking water contaminated by pesticides. Respiratory failure is not a typical early symptom of this scenario, and skin irritation would be less likely from ingestion alone.