What is the proper response if a sample collection method introduces contaminants?

When a sample collection method introduces contaminants, the most appropriate response is to revise the sampling method to eliminate sources of contamination. This approach ensures the integrity of future samples and maintains the reliability of the data collected. By revising the method, you can identify and mitigate the sources of contamination, thereby enhancing the quality of the sampling process.

Completely documenting any occurrences of contamination is essential for transparency and understanding of the data collected, but simply documenting and continuing with the same method does not address the root issue. Changing the sampling analysis may help interpret contaminated data, but it does not fix the method itself, which continues to risk contamination for future samples. Adjusting the method without a comprehensive revision could lead to continued contamination issues, so a thorough revision is necessary to ensure long-term accuracy and trustworthiness of water sampling results.