Findings from a recent study indicate that most California schools are providing drinking water that meets current safety standards. However, the authors suggest that continued attention and investments are needed to assure tap water safety in all schools. Researchers partnered with 83 schools from a representative sample of 240 California public schools to collect and analyze tap water samples for five common drinking water contaminants: arsenic, nitrate, hexavalent chromium, copper and lead. The first three may occur naturally in groundwater but can also come from agricultural or industrial activities. Lead and copper are heavy metals that may be found in building plumbing and can be present in tap water under certain conditions. No tap water samples violated the California state action level for arsenic or nitrate, two contaminants that should be brought to levels at or below state standards by water utility treatment of their sourcewater. Four percent of schools had at least one sample that exceeded California's proposed 10 parts per billion action level for hexavalent chromium. Four percent of schools exceeded the 1300 ppb state action level for copper. A notable feature of the study was its detailed analysis of lead in tap water. Four percent of study schools had at least one first-draw tap water sample that exceeded the 15 ppb state action level for lead, 18% exceeded the US Food and Drug Administration's bottled water standard of 5 ppb, and 75% exceeded the American Academy of Pediatrics recommendation of 1 ppb. Researchers found that turning on the affected taps to “flush” pipes for 45 seconds reduced observed lead concentrations above 15, 5, and 1 ppb to 2%, 10%, and 33% of schools, respectively. These findings provide valuable information for mitigating the presence of lead in tap water. The study, “A Comprehensive Examination of the Contaminants in Drinking Water in Public Schools in California, 2017-2022”, was published online on September 4, 2023 in the journal Public Health Reports. It was conducted by researchers from the University of California's Nutrition Policy Institute, Stanford University and Virginia Polytechnic Institute.
Good nutrition, and improved health, attendance, academics, and school climate are some of the benefits when schools offer meals at no charge to all students. California and Maine, followed by six other states, have already enacted legislation to provide daily meals at school to all K-12 public school students, at no charge regardless of family income level. According to tracking by the Food Research and Action Center, over half of the remaining states are working to pass School Meals for All legislation. Additionally, a bill has been offered at the federal level. Researchers at the Nutrition Policy Institute, Arizona State University, the University of Connecticut, Boise State University and Merrimack College developed a summary of the evidence on the benefits of universal school meal programs. The researchers who developed the synopsis work collaboratively on evaluations of new state School Meals for All programs.
Nutrition Policy's Institute's Celeste Felix will present at the 2023 California Resource and Recovery Association Conference about NPI's latest project evaluating how a large, urban school districts' transition to scratch cooking and using reusable serviceware can impact students' dietary intake and environmental sustainability. The conference is hosted by California's largest statewide recycling association and takes place in Burlingame, CA August 13-16, and Celeste will be co-presenting with Ben Schleifer from the Center for Environmental Health and Fremont Unified School District's recycling coordinator, Stephanie Willits on August 15 from 2:45 to 4:15 p.m. Ben, Stephanie, and Celeste will be highlighting the school districts' reusable tray and cutlery pilot project, which is part of a larger study, “Transition to Freshly-Prepared School Meals: Impacts on Meal Appeal, Student Participation, Intake, Food and Packaging Waste & School Finances,” funded by the US Department of Agriculture's Agriculture and Food Research Initiative, grant number 2020-68015-30736. This study is conducted by NPI, the UC Berkeley School of Public Health and FUSD in partnership with the Center for Environmental Health and StopWaste.
A study, “Effectiveness of a School Drinking Water Promotion and Access Program for Overweight Prevention,” led by Dr. Anisha Patel from Stanford University, along with researchers from the University of California's Nutrition Policy Institute and UC San Francisco, finds that a school-based intervention to enable and promote tap water consumption can prevent overweight in 4th-grade students. The randomized controlled trial analyzed data collected from 1262 students at 18 low-income, ethnically diverse elementary schools in California. The Water First program included the installation of a water dispenser with cups in the cafeteria, and two water bottle filling stations in other high-traffic areas of each school, classroom lessons related to healthy beverage choice, and schoolwide water promotion over one school year. Researchers observed a 3.2 percentage point difference in the prevalence of overweight among students in intervention schools compared to those in schools that did not receive the intervention. National standards set by Healthy People call for a 2.3% reduction in childhood obesity by 2030. While Water First did not affect obesity prevalence, it prevented overweight—an important target for preventing the onset of obesity. The study is a significant addition to the evidence base on the importance of enabling the consumption of plain water given its finding that improving and promoting access to safe and appealing drinking water can prevent weight gain in children. The study, funded by the National Institutes of Health, will be featured in the September 2023 issue of Pediatrics and was published online on August 7, 2023. A short video of study findings is available in English and Spanish, and the study was featured in multiple media outlets including an August 7, 2023 news story in HealthDay, "Some Schools Respond to Child Obesity by Focusing on Water," an August 7, 2023 video in CBS News, "Getting kids to drink more water at school may prevent excess weight gain," an August 10, 2023 news story in CNN, "How water-bottle fill stations can impact children's health, according to a new study," and an August 10, 2023 article in Physicians Weekly, "School-based water promotion program associated with lower overweight prevalence." The Water First intervention materials are available online. Dr. Patel is a member of the National Drinking Water Alliance, which is coordinated by NPI.
Some US state laws require schools to provide certified physical education, or PE, teachers and a minimum amount of PE to support students in achieving 60 minutes of daily physical activity. However, adherence to these laws is low, especially in elementary schools. For example, in New York City elementary schools, adherence was only 4% in 2015. Researchers evaluated the effectiveness of PE Works, a multi-level intervention aimed at supporting elementary schools in implementing physical education (PE) in New York City. PE Works included three evidence-based interventions: providing certified PE teachers, training classroom teachers to lead PE, and implementing an audit and feedback system with coaching delivered by district-level staff. The study found that PE Works is most successful when school districts prioritize support for higher-need schools first, tailor support based on individual school needs, increase the importance of PE at the district and school level, build strong relationships between district and school staff, and provide ongoing coaching and involve parents in advocating for quality PE. The research suggests promising practices for scaling up similar interventions in school districts nationwide. Results were published in the International Journal of Behavioral Nutrition and Physical Activity by Hannah Thompson, Kristine Madsen and Maya Zamek from the University of California, Berkeley, Thomas McKenzie from San Diego State University and David Dzewaltowski from the University of Nebraska Medical Center. The research was funded by the National Heart Lung and Blood Institute, Grant 1K01HL151805.
