What analysis method is commonly used to detect lead in drinking water?

The preferred method for detecting lead in drinking water involves water sampling followed by laboratory analysis using techniques such as Inductively Coupled Plasma Mass Spectrometry (ICP-MS). This method is highly sensitive and can detect very low concentrations of lead, which is crucial given the health risks even at minimal levels of exposure. Laboratory analysis using ICP-MS provides not only accurate detection but also quantification of lead, allowing for an informed assessment of contamination levels.

The process ensures that samples are collected properly to avoid contamination, and analyzing them in a controlled laboratory environment eliminates variables that could skew results. Techniques like ICP-MS are capable of analyzing multiple elements simultaneously, which can be beneficial when testing water for various contaminants beyond just lead.

In contrast, methods such as visual inspections or simple home testing kits often lack the necessary sensitivity and precision required for an accurate assessment of lead levels in drinking water. Boiling water may destroy some contaminants but doesn't effectively remove heavy metals like lead, and any residue observed does not reliably indicate lead presence. Therefore, the scientific rigor and precision of laboratory analysis with ICP-MS make it the most reliable choice for detecting lead in drinking water.