incidence of illness

Incorrect. This describes prevalence, not incidence.

Correct! This is the definition of incidence of illness.

Incorrect. This describes risk, not incidence.

Incorrect. This describes mortality, not incidence.

Correct! This is a key reason for monitoring incidence of illness.

Incorrect. This is important, but not the primary reason for monitoring incidence of illness.

Incorrect. While relevant, this is not the primary reason for monitoring incidence of illness.

Incorrect. While monitoring incidence can inform technology development, it's not the primary reason.

Incorrect. This is a major factor in influencing illness.

Incorrect. Treatment effectiveness directly impacts illness incidence.

Correct! While healthcare access is important, it doesn't directly influence the rate at which new cases arise.

Incorrect. Environmental factors significantly influence water quality and thus illness.

Incorrect. This is a key method for monitoring illness incidence.

Incorrect. This is a vital method for tracking illness outbreaks.

Incorrect. Epidemiological studies are crucial for understanding the link.

Correct! Water bills provide consumption data, not information on illness incidence.

Incorrect. This is a narrow approach. A holistic approach requires a broader perspective.

Correct! This represents a holistic approach that addresses multiple aspects of the problem.

Incorrect. While important, this is not a holistic approach, but a regulatory one.

Incorrect. Individual responsibility is crucial, but a holistic approach requires systemic solutions.

Potential Causes:

• Contamination of the source water: A possible contamination event upstream could introduce pathogens into the water source.
• Insufficient chlorine dosage: The chlorine disinfection system may not be effectively eliminating pathogens due to a malfunction or improper dosage.
• Breakdown of the sand filter: The sand filter may be compromised, allowing pathogens to pass through and reach consumers.
• Human behavior: Inadequate hand hygiene practices within the community could contribute to the spread of the illness, even if the water supply is safe.

• Increase water quality testing frequency and scope: Expand testing to include a wider range of pathogens and contaminants, focusing on those that cause gastrointestinal illnesses. This will help identify the source of contamination if present.
• Review and adjust chlorine dosage: Ensure the chlorine dosage is adequate and that the disinfection system is operating effectively.
• Inspect and maintain sand filters: Conduct a thorough inspection of the sand filters to ensure they are functioning properly. Replace the filter media if necessary.

• Increased testing: This will help identify the specific pathogens causing the illness and pinpoint the source of contamination if it's in the water supply.
• Chlorine dosage review: This ensures that disinfection is effective in eliminating pathogens and prevents the spread of illness from contaminated water.
• Filter inspection and maintenance: This ensures that the sand filter is effectively removing particles and contaminants, preventing pathogens from reaching consumers.