Found 24 datasets matching "maximum contaminant level".
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This table summarizes the number of times samples from a location have exceeded an EPA-mandated maximum contaminant level (MCL) since 1990.
Search relevance: 169.48 | Views last month: 0 -
This data includes information on Arsenic violations in the US, including time patterns and spatial patterns in Arsenic violations, and people served by systems in violation. Most of the data is...
Search relevance: 108.33 | Views last month: 3 -
Decrease the percentage of public water supplies with maximum contaminant level violations for E-coli from 0.7% in 2013 to 0.5% by 2017.
Search relevance: 68.59 | Views last month: 2 -
Decrease the percentage of public water supplies with annually reported maximum contaminant level violations from 16% in 2013 to below 12% by 2017.
Search relevance: 68.25 | Views last month: 1 -
Groundwater is an important source of drinking and irrigation water throughout Idaho, and groundwater quality is monitored by various Federal, State, and local agencies. The historical,...
Search relevance: 51.42 | Views last month: 2 -
A database where EPA has compiled data on public drinking water systems and whether they have certain drinking water violations. This data is collected by the states and given to the EPA. This...
Search relevance: 49.77 | Views last month: 31 -
This data release contains two spatial datasets and a data table in support of an evaluation of arsenic and uranium occurrence in Connecticut groundwater through spatially weighted and bedrock...
Search relevance: 48.13 | Views last month: 0 -
This data release contains: (1) ASCII grids of predicted probability of elevated arsenic in groundwater for the Northwest and Central Minnesota regions, (2) input arsenic and predictive variable...
Search relevance: 46.38 | Views last month: 0 -
The data set contained herein were collected as part of a cooperative U.S. Geological Survey and U.S. Environmental Protection Agency (EPA) project entitled "Field Investigations to Help Support...
Search relevance: 45.91 | Views last month: 0 -
ABSTRACT: In the United States (US), private-supply tapwater (TW) is rarely monitored. This data gap undermines individual and community risk management decision making, leading to increased...
Search relevance: 45.69 | Views last month: 0 -
This dataset includes pesticide-concentration results for 32 discrete water samples that were collected on the islands of Kauai and Oahu between November 21, 2016 and April 29, 2017. The water...
Search relevance: 36.26 | Views last month: 0 -
From September to December, 2016, herein referred to as the baseline characterization period, monthly samples were collected from four groundwater wells, one surface-water site, and nine soil...
Search relevance: 36.24 | Views last month: 0 -
Citation Note: These data were collected as part of a research study published in Environmental Science and Technology. Please reference the following paper when citing these data. Blondes,...
Search relevance: 35.54 | Views last month: 0 -
Groundwater samples were collected from 60 public supply wells in the Colorado Plateaus principal aquifer. Water quality evaluations of groundwater for drinking water at public supply depths were...
Search relevance: 34.79 | Views last month: 0 -
Data and preliminary machine-learning models used to predict manganese and 1,4-dioxane in groundwater on Long Island are documented in this data release. Concentration data used to develop the...
Search relevance: 29.94 | Views last month: 1 -
As part of the US Geological Survey's Next Generation Water Observing Systems Program (NGWOS) Research and Development efforts in the Illinois River Basin, two intensive technology 'testbed'...
Search relevance: 28.63 | Views last month: 0 -
Data used to model and map manganese concentrations in groundwater in the Northern Atlantic Coastal Plain (NACP) aquifer system, eastern USA, are documented in this data release. The model...
Search relevance: 27.99 | Views last month: 0 -
Evaluating Decadal Changes in Groundwater Quality: Groundwater-quality data were collected from 5,000 wells between 1988-2001 (first decadal sampling event) by the National Water-Quality...
Search relevance: 25.77 | Views last month: 0 -
Evaluating Decadal Changes in Groundwater Quality: Groundwater quality data were collected from 5,000 wells between 1988-2001 (first sampling event) by the U.S. Geological Survey’s National...
Search relevance: 25.77 | Views last month: 0 -
High concentrations of uranium were detected in samples from wells used for domestic drinking water supplies in the San Joaquin Valley. Of 163 domestic wells sampled by the California Groundwater...
Search relevance: 25.77 | Views last month: 0
