ScienceOpenAug 14

'Why COD Mn Is Not Suitable for Assessing #NOM Concentration in Source Waters' - an AWWA #WaterScience article on #ScienceOpen:

➡️ https://www.scienceopen.com/document?vid=63c28b75-1138-4ea6-bf49-b518ed4d93d2

#SourceWater #WaterQuality #EnvironmentalChemistry #DrinkingWaterSafety

Why COD <sub>Mn</sub> Is Not Suitable for Assessing NOM Concentration in Source Waters

<p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" dir="auto" id="d19423333e118">Total organic carbon (TOC) and permanganate chemical oxygen demand (COD <sub>Mn</sub>) are the most commonly employed methods to determine the amount of natural organic matter (NOM) in raw and drinking water. However, the usage of COD <sub>Mn</sub> is questionable due to its variable degrees of oxidation for different types of organics. Our study investigates the ratio of COD <sub>Mn</sub> to TOC in source waters with diverse NOM compositions characterized by specific UV absorbance (SUVA) and total organic nitrogen (TON). Herein, mountainous water sources with high amounts of humic substances (high SUVA, low TON) exhibit approximately 1.8–2.5 times higher COD <sub>Mn</sub> values than lowland algae‐laden sources (low SUVA, high TON) despite having the same TOC values. The determination of COD <sub>Mn</sub>, therefore, can give misleading information about the amount of organics in waters with different NOM character and underestimate the NOM concentration in lowland algae‐laden water sources, which could have implications for drinking water quality. </p><p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" dir="auto" id="d19423333e139">Permanganate chemical oxygen demand can give misleading information about the amount of organics in water sources. In algae‐laden waters, COD <sub>Mn</sub> significantly underestimates their concentration. </p>

ScienceOpen
ScienceOpenAug 14

💧 'AWWA Water Science' is an interdisciplinary journal publishing original, refereed research on the science, engineering, and social dimensions of water.

➡️ https://www.scienceopen.com/collection/AWWA_AWS

#WaterScience #EnvironmentalEngineering #WaterQuality #SustainableWater

AWWA Water Science

<p><em>AWWA Water Science</em> is an interdisciplinary journal that publishes original, refereed research on the science, engineering, and social aspects of water. AWS explores theoretical, experimental, and practical approaches that advance fundamental understanding and application of all aspects of water works and any source water that could conceivably become a potable water supply.</p><p> </p><p> </p>

ScienceOpen
EauRougeJun 21, 2025

Entrepreneur here analyzing spring water - lab data shows natural antioxidants, bioavailable minerals, cellular-supporting compounds.

Industry strips everything for "purity" - but are we removing the good stuff?

How do I separate real health benefits from hype? Need science perspectives on water quality beyond "it's clean."

#WaterScience #EntrepreneurLife #HealthyWater

Hacker NewsMay 26, 2025

The Source of "Water"

https://jamesgill.net/waterword/

#HackerNews #Water #Source #WaterScience #WaterConservation #HNStories #EnvironmentalAwareness

The Source of Water - James Gill

Did you know vodka in Russian means "little water"? The origins of the modern words for "water" in the western world are ancient. There are two main roots for the names we have water: ap and wed. Ap was used when speaking of water as a "living force" in action, and wed when speaking of

James Gill -
💧🌏 Greg CocksMay 6, 2025
U.S. Geological Survey Colorado River Basin Science and Technology Collaboration Meetings on Drought (2021) - Synthesis of Findings
--
https://pubs.usgs.gov/publication/cir1551 <-- shared publication
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USGS recent publication about the challenges and barriers land managers and scientists are working on to address the wicked problems of drought in the Colorado River Basin.
#water #hydrology #drought #extremeweather #fedscience #Colorado #ColoradoRiver #ColoradoRiverBasin #watershed #waterresources #watersupply #climatechange ##landmanagers #management #planning #overuse #magicwater #humanimpacts #ecosystems #agriculture #farming #USWest #strategy #GIS #spatial #mapping #waterscience #interdisciplinary #research #adapation #spatialanalysis #spatiotemporal #stakeholder #engagement #cost #economics #coordination #future @USFS @USFS
U.S. Geological Survey Colorado River Basin science and technology collaboration meetings on drought (2021)—Synthesis of findings

Ongoing, prolonged, and severe drought and water overuse during the first two decades of the 21st century have reduced water supplies of the Colorado River Basin, with effects cascading to ecosystems and human communities throughout the basin. In June and July 2021, the U.S. Geological Survey (USGS) Colorado River Basin Actionable and Strategic Integrated Science and Technology initiative team held a series of 12 collaboration meetings with USGS scientists and managers to discuss complicated, integrated science challenges and solutions related to drought in the Colorado River Basin. These Science and Technology collaboration meetings were structured to identify challenges experienced by meeting participants when working on complex problems, explore opportunities for coproducing scientific information, and envision future collaborative programs that leverage new technology. The 12 meetings were attended by 79 USGS staff representing 43 unique affiliations (for example, USGS science centers, mission areas, and regional offices). Meeting participants submitted 865 individual...

ScienceOpenApr 15, 2025
'Understanding the Cost of Basic #DrinkingWater Services in the #UnitedStates: A National Assessment' - an AWWA #WaterScience article on #ScienceOpen: https://www.scienceopen.com/document?vid=325ef080-7682-4536-a35b-e49538e57847
Understanding the Cost of Basic Drinking Water Services in the United States: A National Assessment

<p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" dir="auto" id="d5355095e111">The cost of basic drinking water services has implications for affordability, investment capacity, and public health. The fragmentation of drinking water services in the United States makes it difficult to reliably track and compare what customers pay for basic drinking water services. This paper uses a new, national dataset to examine the social, political, environmental, and institutional drivers of the cost of basic drinking water services, measured as the cost to households of 6000 gal of water per month. We find basic drinking water service costs vary widely across the United States. Costs are generally higher in smaller and more liberal cities and lower in places that rely on groundwater sources. Our findings provide a unique national perspective on variation in, and drivers of, the cost of basic water services and can inform efforts to improve the affordability, accessibility, and quality of drinking water services in the United States. </p>

ScienceOpen
D-USYS ETH ZurichFeb 14, 2025

Researchers from the University of California (UC) and @usyseth have been tracking how much stream networks expand and contract in response to rainfall and drought in the US.

https://usys.ethz.ch/en/news-events/news/archive/2025/01/how-stream-networks-pulse-with-rainfall.html

#DroughtEffects #UCResearch #Hydrology #ClimateChange #WaterScience #EnvironmentalStudies

How Stream Networks Pulse with Rainfall

Stream networks are often mapped as fixed features, but they actually extend and retract as the landscape wets up and dries out. Researchers from University of California (UC) and ETH Zurich have been trying to figure out how much stream networks stretch and shrink in response to rainfall and drying. Their study is the first attempt to estimate this dynamic behaviour at a large scale across the continental United States.

Department of Environmental Systems Science
Show threadMax HornJan 21, 2025

🦄 Hallo 🐘, was machst Du denn hier?
🐘 Ich drücke auf die Proben, um zu simulieren, was im Inneren vong Planeten passiert.
🦄 Cool!
🐘 Ne, voll hot isses da, paar tausend Gräder, und zig Millionen Pascäller!
🦄 Pascäller?
🐘 Damit wird der Druck gemessen.
🐘 Kuckmal, ich presse hier diese beiden Diamanten zusammen,
🦄 Brillant!
🐘 … und dann kommt der Röntgen und schaut, wie sich zum Beispiel das Eis verformt.
🦄 🍨 … 😋 #schleckweg!

7/N #UM25 #WaterScience #CMWS #EuropeanXFEL

Academic EuropeMar 14, 2024

🚨Job alert, #postdoc ! 📢 📢

🇨🇭Eawag, the Swiss federal Institute is looking for:

➡ 2-Year Postdoctoral Fellowship
Apply before: 2024-04-11

Find more information here:
https://www.academiceurope.com/job/?id=3440

#jobs #hiring #phd #research #engineering #aquaticecology #aquaticecosystems #aquaticscience #technology #waterscience #watermanagement #postdocfellowship

San Francisco BaykeeperMar 8, 2024

On #InternationalWomensDay (and every day), we're proud to be a woman-led org! Our Executive Director Sejal Choksi-Chugh recently celebrated 20 years at Baykeeper 🎆

Photo: Robb Most

#internationalwomensday2024 #womeninscience #womeninleadership #waterscience #sfbay #sanfranciscobay #baykeeper #sfbaykeeper