Source Water Resources
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Humans Are Depleting Groundwater Worldwide, But There Are Ways To Replenish It
1/25/2024
Groundwater is a renewable resource, but it can take decades or even centuries for some aquifers to recover after they are depleted. Current understanding of this challenge is based mainly on where and how frequently people record measurements of water levels in wells. In a newly published study, our team of data scientists, water specialists, and policy experts compiled the first global-scale dataset of these levels.
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EPA Researchers Develop Forecasting Approach To Predict Harmful Cyanobacterial Blooms For U.S. Lakes
1/23/2024
Due to climate and land use pressures, there is concern that harmful cyanobacterial blooms (HCBs) may increase in frequency, extent, and magnitude, but it can be difficult to know when and where HCBs may form. EPA’s Safe and Sustainable Water Resources research uses a range of data sources and methods to characterize HCBs in waterbodies.
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Study Evaluates The Cost Benefits Of Recharge Net Metering For Groundwater Sustainability
1/22/2024
In drought-plagued states, scientists and water authorities have been searching for ways to stretch out or replenish water sources. One such method is through managed aquifer recharge (MAR), which involves injecting water directly into aquifer wells, typically from stormwater runoff. MAR projects are a cost-effective way to avoid groundwater overdraws, but often require the participation of private landowners. To solve this, researchers have developed a program called recharge net metering (ReNeM).
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A Comparative Analysis Of UCMR 3 And UCMR 5 Of The Top U.S. Water Systems And Their Capital Improvement Projects For PFAS Remediation
1/22/2024
This article compares the PFAS contaminants present in the third and fifth cycles of the U.S. EPA's Unregulated Contaminant Monitoring Rule (UCMR) for some top water systems in the U.S., based on the population served, to examine the changes in their occurrence and levels over time. We will also discuss the projects by the water systems in their capital improvement plans for PFAS remediation in its water sources and to prevent further contamination.
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Destroying PFAS In Wastewater To Help Safeguard Waterways
1/10/2024
Technologies for the destruction of per- and polyfluoroalkyl substances (PFAS) hold promise, but also face challenges.
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Complying With The EPA's First Limits On Toxic 'Forever Chemicals' For Public Drinking Water
1/3/2024
Monitoring and reporting software helps utilities meet compliance requirements.
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5 Concerning Contaminants Found In Your Drinking Water
1/3/2024
Contaminants can enter water in a variety of ways. In this article, read about the measures that can be taken to reduce exposure and contamination.
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Mapping With Molybdenum: Using Sediment Characteristics To Understand Hypoxia In Estuaries
12/27/2023
Many factors can affect dissolved oxygen concentrations and hypoxia can vary greatly over space and time. To better understand the link between hypoxia and nutrient inputs, U.S. EPA scientists are using a surprising method — measuring molybdenum in surface sediment as an indicator for hypoxia throughout the water above it.
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Aqueous VetsĀ® Quick Response Keeps Critical Stoneridge Well In Service In Northern California
12/21/2023
Zone 7 Water Agency is a water wholesaler in Northern California that serves more than a quarter million residents. Blending water from both surface and groundwater sources has enabled Zone 7 to address many emerging contaminant concerns over the past several years.
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Assessing Methods Of Measuring Microplastics In Water
12/19/2023
Microplastics have been found in surface waters worldwide — including in ponds, rivers, and the ocean. However, our ability to characterize microplastics in the environment is limited by the lack of technologies for rapidly and accurately identifying and quantifying microplastics. Although standard methods exist for collecting and preparing microplastic samples, the methods for analyzing samples and actually identifying microplastics within the sample are not as robust.