Climate change could nearly double water bills in some cities - EUROPE SAYS
Turn on a faucet in most American homes and clean water shows up without a second thought. The real cost of that convenience has been creeping upward for years now. Over the past two decades, water rates. . .
Turn on a faucet in most American homes and clean water shows up without a second thought. The real cost of that convenience has been creeping upward for years now. Over the past two decades, water rates across the United States climbed three times faster than inflation. Aging pipes and delayed repairs drove most of that increase. A hotter climate is adding a new kind of pressure on top of the old strains. A team led by researchers atStanford Universityset out to measure exactly how heavy that new burden could become. Water bills keep climbingThe average American water bill has been rising for reasons that had little to do withweather. Utilities were paying down decades of deferred maintenance and worn-out equipment. Climate change now sits on top of those existing pressures. The Stanford-led group built the first tool designed to measure how much it might change what households actually pay. A city on the edgeThe team focused on Santa Cruz, a coastal California city of about 96,000 people. It draws roughly 95% of its water from local streams and a single reservoir. That setup leaves the city badly exposed whenever rain grows scarce. Santa Cruz has already added water-saving appliances and cut irrigation, so the cheap options are mostly used up. How the model worksThe researchers built a framework that ties several moving parts together. It links futureclimatepatterns, utility spending choices, water pricing, and household demand. The model can test what happens when a utility builds something costly, like a wastewater reuse plant or a desalination facility. It then traces those expenses all the way down to individual monthly bills. There is a feedback loop built into it too. When bills climb, people use less water, which changes how much the whole system needs. Bills could nearly doubleThe results were hard to ignore. Under a dry, hot future, median water bills in Santa Cruz could nearly double by mid-century. “Climate change stresses water supplies, and forces utilities to build expensive new infrastructure to maintain reliability,” said study lead author Jennifer Skerker. “In cities already struggling with affordability due to aging infrastructure, the additional costs passed on to ratepayers to pay for additional infrastructure and reliability measures can push a substantial share of households into crisis. ”The share of households paying more than a recommended affordability limit could jump sharply. It might rise from 19% today to 35% under the driest scenario. That limit comes from the US Environmental Protection Agency (EPA). The agency suggests water should eat up no more than a small slice of household income. Low-income families hit hardestThe pain would not be shared evenly across thecity. For the poorest residents, median monthly bills could climb from around $60 to $111 in today’s dollars. More than 5% of households would end up spending as much as a third of their income on water. That forces brutal trade-offs with food, healthcare, and other basics. The gap in actual water use between rich and poor households is small. The gap in what that water costs relative to income is enormous. Dry weather drives the costsThe researchers pulled apart which climate factors mattered most for affordability. Falling average rainfall turned out to be the single biggest driver of rising bills. Less rain means a lower reservoir, which pushes the utility toward expensive new supplies. Wild swings from year to year add even more strain, since the city’s lone reservoir cannot store much for a dry spell. Reliability versus affordabilityThe team also compared different building strategies. The trade-offs were stark. One cautious approach delayed the big investments and kept monthly bills lower. That same approach left the system dangerously thin during droughts, delivering reliable water in only six out of ten years on average. A bolder plan that built desalination early protected supply but sent bills soaring. What other cities faceSanta Cruz is far from alone in this bind. The same modeling approach could apply to Los Angeles, San Diego, San Francisco, and cities abroad such as Cape Town and Melbourne, Australia. Places that feel secure today are not off the hook either. As droughts deepen and rates keep rising, many could drift toward the same squeeze. Beyond what utilities can fixThe authors argue that no single water department can solve this on its own. The problem simply runs deeper than any one utility budget. “The bottom line is that under today’s financing and regulatory models, climate adaptation and water affordability are on a collision course,” said study senior author Sarah Fletche. “Ensuring reliable water access for everyone is going to require interventions at the state and federal level that go far beyond what individual utilities can do on their own. ”Fixing aging pipes was already a heavy lift for most cities. Doing it while theclimatedries out will test how fairly those costs get shared. Video Credit: Stanford Woods InstituteThe study is published in the journalNature Sustainability. —–Like what you read?Subscribe to our newsletterfor engaging articles, exclusive content, and the latest updates. Check us out onEarthSnap, a free app brought to you byEric Rallsand Earth. com. —–