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1. Integrated Water Management at the Peri-Urban Interface: A Case Study of Monterey, California

   https://doi.org/10.3390/w12123585  

   Gile, Bridget C. ; Sciuto, Paul A. ; Ashoori, Negin ; Luthy, Richard G. ( December 2020 , Water)

   null (Ed.)

   Climate change, drought, and chronic overdraft represent growing threats to the sustainability of water supplies in dry environments. The Monterey/Salinas region in California exemplifies a new era of integrated or “one water” management that is using all of the water it can get to achieve more sustainable supplies to benefit cities, agriculture, and the environment. This program is the first of its kind to reuse a variety of waters including wastewater, stormwater, food industry processing water, and agricultural drainage water. This study investigates the partnerships, projects, and innovations that shape Monterey’s integrated water network in order to better understand the challenges and opportunities facing California communities as they seek to sustainably manage peri-urban water supplies. Water reuse in the Monterey region produces substantial economic and environmental benefits, from tourism and irrigation of high-value crops to protection of groundwater and increases in environmental flows and water quality. Water resource managers in other communities can learn from Monterey’s success leveraging local needs and regional partnerships to develop effective integrated water solutions. However, key challenges remain in resolving mismatched timing between water availability and demand, funding alternative water supplies, and planning effectively under uncertainty. Opportunities exist to increase Monterey’s recycled water supply by up to 50%, but this requires investment in seasonal storage and depends on whether desalination or additional recycling forms the next chapter in the region’s water supply story. Regulatory guidance is needed on seasonal subsurface storage of tertiary-treated recycled water as distinct from potable recharge. By increasing the supply of recycled water to Monterey’s indirect potable use system, the region’s potential need for seawater desalination may be delayed as much as 30 years, resulting in cost and energy savings, and giving the opportunity to resolve present planning concerns. 

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2. Advancing a Net Zero Urban Water Future in the United States Southwest: Governance and Policy Challenges and Future Needs

   https://doi.org/10.1021/acsestwater.4c00031  

   Crosson, Courtney ; Pincetl, Stephanie ; Scruggs, Caroline ; Gupta, Neha ; Bhushan, Rashi ; Sharvelle, Sybil ; Porse, Erik ; Achilli, Andrea ; Zuniga-Teran, Adriana ; Pierce, Gregory ; et al ( May 2024 , ACS ES&T Water)

   The Colorado River supplies >40 million people in the United States Southwest with their daily water supply and is unable to meet the current demands. New approaches are needed to enhance sustainability and resilience. A net zero urban water (NZUW) approach meets the needs of a given community with a locally available and sustainable water supply, without detriment to interconnected systems and the long-term water supply. Transitioning to a NZUW future will require considerable modifications to governance and policy across the Southwest and its cities specifically. We identify five areas of governance and policy challenges: diversified water sources and sinks; planning, design, and operation; monitoring and enforcement; coordination; and addressing equity and justice. Four case study cities are investigated: Albuquerque, Denver, Los Angeles, and Tucson. Across these cities, the policy priorities include supporting potable water reuse, coordinating policies across jurisdictions for alternative water sources, addressing equity and justice, developing and incentivizing water conservation plans, and making aquifer storage and recovery projects easier and more economical to pursue. We conclude that a NZUW transition in the Southwest faces considerable governance and policy challenges, but moving cities toward this goal is crucial. 

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3. Extending traditional water supplies in inland communities with nontraditional solutions to water scarcity

   https://doi.org/10.1002/wat2.1543  

   Scruggs, Caroline E. ; Heyne, Catherine M. ( June 2021 , WIREs Water)

   Urban communities around the world are grappling with the challenges associated with population increases, drought, and projected water shortages. With a substantial global shortfall between water supply and demand expected by 2030, water planning strategies must adapt to a new reality characterized by higher temperatures and less precipitation, requiring new ways of thinking about water management, use, and governance. Commonplace strategies such as water conservation and nonpotable water reuse might not be sufficient to adequately stretch water supplies in water‐scarce parts of the industrialized world. In the United States, planned potable water reuse (i.e., purification of domestic wastewater for reuse as drinking water) is emerging as a way forward to mitigate water shortages without significant changes to lifestyle, behavior, or infrastructure. But potable reuse is not the only solution: paradigm shifting and disruptive options that more holistically address water scarcity, such as composting toilets and market‐based approaches to water use, are also gaining traction, and they could be pursued alongside or instead of potable water reuse. However, these options would require more significant changes to lifestyles, behavior, infrastructure, and governance. While all of the options considered offer advantages, they each come with new concerns and challenges related to cost, public perception, social norms, and policy. The goal of this work is to consider a number of plausible solutions to water scarcity—partial and complete, traditional and disruptive—to stimulate forward‐looking thinking about the increasingly common global problem of water scarcity.

   This article is categorized under:

   Engineering Water > Sustainable Engineering of Water

   Engineering Water > Planning Water

    

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4. Water supply, waste assimilation, and low‐flow issues facing the Southeast Piedmont Interstate‐85 urban archipelago

   https://doi.org/10.1111/1752-1688.13130  

   Jackson, C. Rhett ; Wenger, Seth J. ; Bledsoe, Brian P. ; Shepherd, J. Marshall ; Capps, Krista A. ; Rosemond, Amy D. ; Paul, Michael J. ; Welch‐Devine, Meredith ; Li, Ke ; Stephens, Timothy ; et al ( May 2023 , JAWRA Journal of the American Water Resources Association)

   Rapidly growing cities along the Interstate‐85 corridor from Atlanta, GA, to Raleigh, NC, rely on small rivers for water supply and waste assimilation. These rivers share commonalities including water supply stress during droughts, seasonally low flows for wastewater dilution, increasing drought and precipitation extremes, downstream eutrophication issues, and high regional aquatic diversity. Further challenges include rapid growth; sprawl that exacerbates water quality and infrastructure issues; water infrastructure that spans numerous counties and municipalities; and large numbers of septic systems. Holistic multi‐jurisdiction cooperative water resource planning along with policy and infrastructure modifications is necessary to adapt to population growth and climate. We propose six actions to improve water infrastructure resilience: increase water‐use efficiency by municipal, industrial, agricultural, and thermoelectric power sectors; adopt indirect potable reuse or closed loop systems; allow for water sharing during droughts but regulate inter‐basin transfers to protect aquatic ecosystems; increase nutrient recovery and reduce discharges of carbon and nutrients in effluents; employ green infrastructure and better stormwater management to reduce nonpoint pollutant loadings and mitigate urban heat island effects; and apply the CRIDA framework to incorporate climate and hydrologic uncertainty into water planning.

    

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5. Mapping potable reuse survey data using spatial statistics to inform tailored education and outreach

   https://doi.org/10.1002/aws2.1197  

   Cruz, Maurice_P ; Scruggs, Caroline_E ; Distler, Lauren_N ( October 2020 , AWWA Water Science)

   This research describes geospatial analyses of water‐related knowledge and opinion data on potable water reuse collected through a large‐scale public survey of water utility customers in Albuquerque, New Mexico. We identify key geographic areas, or statistically significant “hotspots,” of public distrust in the local water utility provider, public willingness (or lack thereof) to accept potable water reuse, and lack of knowledge or misconceptions about water‐related issues and climate change. By combining public survey data, geographic information system software, and spatial statistics for hotspot analyses, we introduce a tailored outreach method to identify geographic locations for targeted outreach and education on water‐related issues. This new approach to analyzing survey data is a promising dimension of water management, and the method could be important for tackling other resource management issues in additional cities or regions as well.

    

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