USGS study used 20 years of data to create new statistical models
A new model predicts that atrazine and its breakdown product deethylatrazine have less than a 10% chance of exceeding the U.S. Environmental Protection Agency’s (EPA) standard for public drinking water supplies in shallow groundwater in about 95% of the nation’s agricultural areas. Atrazine is a commonly used herbicide for weed control in corn and sorghum production.
These findings are based on new statistical models developed from almost 20 years of nationwide water quality monitoring data collected by the USGS National Water Quality Assessment Program (NAWQA).
Water Replenishment District of Southern California will host event at its headquarters
The Water Replenishment District of Southern California (WRD) this week encouraged the observance of National Groundwater Awareness Week to increase understanding of the vital importance of groundwater to the urban areas of southeast Los Angeles County, where 40% of the water used is groundwater. Rural areas of America are even more dependent on groundwater, which accounts for approximately 96% of the water supply.
R2 and M2-Series RO systems are engineered and manufactured for commercial and light industrial applications and for feed waters up to 10,000 TDS. These high-efficiency systems use low-energy membrane elements that deliver high quality water at low operating pressures. This in turn makes AXEON R2 and M2-Series the first low-energy brackish water systems in the marketplace.
The VZN Series uses three technologies to deliver better-tasting, scale-reducing, ultrafiltered water throughout an entire restaurant or house. The multi-bore ultrafilter reduces 99.999% of solids and substantially reduces microbiological contaminates. Because the carbon cartridge follows the ultrafilter, it does not clog, resulting in higher taste and odor reduction levels. The final technology reduces 96% to 98% of lime scale without using chemicals or wasting water.
Finding potable water can be a difficult task for rural communities in sub-Saharan Africa. South African nongovernmental organization Roundabout Water Solutions (RWSSA) found an innovative method for communities to pump and store clean drinking water: playground equipment that doubles as a pumping apparatus. Raissa Rocha, editorial intern at Water Quality Products, recently checked in with Sandra Hayes, administrative and donor relations manager at RWSSA, to discuss the systems and the organization’s efforts.
Raissa Rocha: How do these systems work?
The U.S. Geological Survey (USGS) released a report in August revealing that 20% of untreated water samples from wells across the U.S. contain concentrations of trace elements exceeding human health benchmarks. Raissa Rocha, editorial intern for Water Quality Products, spoke with Joe Ayotte, USGS hydrologist and lead author of the study, about the report and the occurrence of trace elements in groundwater.
Raissa Rocha: What was the purpose of this study?
Hydrofracturing is not a new concept—in fact, it has been utilized by the gas and oil industries in the U.S. since the 1940s. Thanks to increased media attention, however, many are led to believe that this is a new technology developed specifically for the extraction of natural gas.
Evaluating gas drilling’s effects on groundwater and air quality
Gateway Village, a 15-acre mixed-use development complex in North Carolina—designed to bring businesses, retailers, restaurants, new residents and visitors to the area—was developed through a joint venture between Bank of America and Cousins Properties. The complex is home to three office towers totaling more than 1 million sq ft of class A office space. In late 2007, North Carolina and a large portion of the southeastern U.S. endured an exceptional drought that prompted water restrictions across the region.
Water reclamation system saves energy & water costs
In recent days, groundwater has been gaining attention. Increased hydraulic fracturing operations have caused controversy over potential methane gas contamination. Reports indicate that groundwater aquifers, especially in the drought-prone southwestern U.S., are being depleted more quickly than they can be recharged. Surveys, like the one recently released by the U.S. Geological Survey (USGS), reveal that contaminants such as arsenic are widespread in the nation’s water wells.
More than ever, sustainable surface and groundwater supplies are essential to communities across North America and around the world. The strains of industry and agriculture on groundwater are noticeable as pressures on water supplies intensify and supply patterns change. The increase in agriculture over vulnerable aquifers, climate change and hydrocarbon production are impacting water quality. Unregulated use or uncontrolled flow of groundwater can cause water quality degradation and conflict between water users.
Small drinking water systems opt for POE UV treatment