Droughtsville, California, is in trouble. Its water supply is endangered as multiple crises intensify: worsening droughts, competition for scarce supplies, sea level rise, groundwater contamination, earthquakes, wildfires and extreme weather. All of these factors, and more, threaten Droughtville’s ability to provide clean water to its residents. The city is fictional, but the threats are not. … CalMatters delved into the details of what scientists and planners have determined could jeopardize the water supply of a typical California city — and some potential solutions.