What two factors can contaminate lead in water?

The correct choice highlights the significance of temperature and acidity in the contamination of lead in water. Both of these factors influence the solubility of lead and its ability to leach from pipes or fixtures into drinking water.

When the temperature of water increases, it can enhance the solubility of various metals, including lead. Warmer water can cause lead to dissolve more readily from sources like plumbing systems, which may contain lead solder or pipes.

In addition, the acidity of the water, often measured in terms of pH, plays a crucial role in lead leaching. Water that is more acidic can corrode pipes and fixtures more aggressively, allowing lead to seep into the water supply. Acidic conditions can disrupt the protective layers that sometimes form on the interior of pipes, leading to increased concentrations of lead in the water.

Overall, both temperature and water acidity are essential factors to consider in the context of lead contamination, as they directly affect the chemical behavior of lead within the water system.