With climate change confronting communities across the West, people who rely on wells are at particular risk as wildfires grow in intensity and frequency. Without vegetation, fire-scarred land becomes more susceptible to mudslides that can damage watersheds. Drought can increase the concentration of pathogens and other contaminants in well water. And fires can damage the well equipment and piping, leaching toxic chemicals into drinking water and forcing property owners to consider costly repairs, upgrades and filtering systems even as they rebuild their homes and businesses. Beyond the West, heavier rains and floods threaten well water quality, too.