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<div class="-ZQ-739 " aria-label="11. Please enter your work product description/abstract (400 characters max). **This section MUST be different from the impact/purpose statement section below.** Please do not use terms such as "sub-product" or other i...

Water quality managers in the State of California and researchers abroad in the UK are applying effects-based methods and developing standard operating procedures and multi-level screening models to more efficiently screen water quality. Specifically the State of California has i...

This forecasting approach may be useful for water managers and associated public health managers to predict near-term future high-risk cyanobacterial harmful algal blooms (cyanoHAB) occurrence. Freshwater cyanoHABs may grow to excessive concentrations and cause human, animal, and...

I investigated the practice of managed aquifer recharge (MAR) of mountain front runoff in the Central Valley of California, USA, as a strategy to improve groundwater storage and availability to community drinking water wells.  The area of interest of the modeling study is th...

A financially and technically accessible method for screening powdered activated carbons for control of HAB toxins in water treatment.

Per- and polyfluoroalkyl substances (PFAS) are a group of chemicals that have gained interest because some PFAS have been shown to have deleterious health effects and prolonged environmental and biological persistence. Chemicals classified as PFAS have a wide range of chemical mo...

It has been challenging to analyze inorganic arsenic (iAs) with anion exchange HPLC-Electrospray Ionization-Mass spectrometry (HPLC-ESI-MS), because arsenite (As(III)) is difficult to retain on column and the salts in mobile phase causes ionization suppression of iAs. To address ...

Lead (Pb) exposures from soil and dust ingestion contribute to children's blood lead levels (BLLs) in the United States. The U.S. Environmental Protection Agency (EPA)'s Strategy to Reduce Lead Exposures and Disparities in U.S. Communities and the Federal Action Plan to Reduce Ch...

Building on UST Finder V1, the first national map of current and historic USTs, UST facilities, and UST releases in the US, V2 will be  developed in collaboration with state, territorial and tribal partners to catalog both the dynamic spatial and attribute information of thi...

Extensive research in recent years has reported higher per- and polyfluoroalkyl substance (PFAS) concentrations in municipal solid waste (MSW) landfill leachate than other municipal wastewaters, including multiple studies of leachate from MSW landfills in the United States. Becau...

With increasing concerns about freshwater cyanobacteria blooms, there is a need to identify which waterbodies are at risk for developing these blooms, especially those that produce cyanotoxins. To address this concern, we developed spatial statistical models using the US National...

This webinar was presented as part of the EPA-ORD Water Research webinar series on October 29, 2014. Dr. Tom Speth and Dr. Darren Lytle provided an overview of EPA’s small-system’s research and outreach efforts to communities, including topics like harmful algal blooms treatment,...

Ductile iron and copper coupons were aged 137–189 days and 2 days, respectively, with 2 mg Cl2·L–1 monochloramine under four water chemistries (pH 7 or 9 and 0 or 3 mg·L–1 orthophosphate). Subsequently, microelectrode profiles of monochloramine con...

Communities across the United States and particularly in the Midwest continue to grapple with the complications associated with aging infrastructure. This includes the presence of lead (Pb)-bearing plumbing components such as lead service lines (LSLs), downstream galvanized iron ...

Chloraminated drinking water systems commonly implement a temporary free chlorine conversion (FCC) to control or minimize nitrification in the distribution system (DS), but unintended water quality changes may occur during the FCC, including increased disinfection byproducts (DBP...

To present to the PTF Lead (Pb) SubCommitttee regarding EPA/ORD's Lead Service Line Identification technical assistance effort.

Presentation on ORD Service Area Boundaries for the EPA GIS Workshop Meeting, to be presented on May 1, 2024.  Presentation will showcase how CAISB is using advanced methods in spatial machine learning to understand which systems Americans source their water from.

Long-term monitoring datasets provide valuable opportunities to identify aquatic ecosystem responses to disturbance at broad spatial extents. The Aquatic and Riparian Effectiveness Monitoring Program (AREMP) is unique in this regard because the program re-surveys the same 1411 st...

EPA-ORD-CPHEA's Michael Pennino, Jana Compton and Robert Sabo were invited to present on groundwater nitrate at joint meeting with USDA-NRCS on May 22, 2024.  This meeting brings together the USDA Agricultural Water Quality National Team together with US EPA scientists and s...

In this work, we assess the techno-economic and social performance of preventing and controlling phosphorus releases from municipal wastewater effluents in local communities. This multicriteria assessment framework accounts for the effects of the economies of scale and the popula...

The six PFAS we have studied (PFOA, GenX, PFMOAA, PFOS, NBP2, PFHxS) produced multiple common effects across all compounds, however the compounds were not toxicologically identical.  Effects common across all compounds included reduced pup and maternal bodyweights, reduced p...

EPA is developing new, rapid methods for monitoring water quality at beaches to determine adequacy of water quality for swimming. The methods being developed rely upon quantitive polymerase chain reaction technology. They will permit real time decisions regarding beach closures...

Altered lake hydrology is an emerging, widespread threat as changing climate conditions and increasing human water use place greater pressure on water resources. Dam and land use management can significantly alter lake water-level regimes and flow characteristics, which in turn c...

The Tap Water Analysis Project was a multi-year study that used targeted and non-targeted analysis (NTA) methods to survey chemical contaminants in drinking water from five regions across the state of California. For the NTA portion of the project, activated carbon point-of-use (...

Communities are searching for technologies to remove and destroy toxic per- and polyfluoroalkyl substances (PFAS), especially when these chemicals are in their drinking water. PFAS have been used in applications such as fire-fighting foam, cosmetics, water- and fire-resistan...