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EPA has compiled state, territorial, and authorized tribal water quality standards that EPA has approved or are otherwise in effect for Clean Water Act purposes. This compilation is continuously...
Search relevance: 165.83 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
Designated uses assessed by statewide statistical surveys and their state and national attainment categories. Statewide statistical surveys are water quality assessments designed to yield unbiased...
Search relevance: 142.24 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) website provides customizable and downloadable information about environmental inspections, violations, and...
Search relevance: 91.30 | Views last month: 9 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
305b Assessed River, Lake, Estuary 2024:Â Connecticut 305b Assessed River 2024 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with Sections...
Search relevance: 89.05 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:40 PM -
305b Assessed River, Lake, Estuary 2024:Â Connecticut 305b Assessed River 2024 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with Sections...
Search relevance: 88.47 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:41 PM -
305b Assessed River, Lake, Estuary 2024:Â Connecticut 305b Assessed River 2024 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with Sections...
Search relevance: 88.45 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:39 PM -
EPAs Office of Enforcement and Compliance Assurance (OECA) cases and settlements webpage contains links to selected settlements resolving civil enforcement cases and, in some cases, complaints...
Search relevance: 88.26 | Views last month: 40 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
305b Assessed River, Lake, Estuary 2024:Â Connecticut 305b Assessed River 2024 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with Sections...
Search relevance: 87.55 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:39 PM -
An inventory that spatially quantifies the surface water hydrography that NPS manages (by park, region, and network) to determine and track which waterbodies are or are not meeting water quality...
Search relevance: 84.23 | Views last month: 3 | Catalog Last Checked: October 02, 2026 at 09:50 PM -
The Wetland Grant Database (WGD) houses grant data for Wetland Program Development Grants (created by EPA in 1990 under the Clean Water Act Section 104(b)(3) authority). The Wetland Grants...
Search relevance: 84.20 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
The Wetland Grant Database (WGD) houses grant data for Wetland Program Development Grants (created by EPA in 1990 under the Clean Water Act Section 104(b)(3) authority). The Wetland Grants...
Search relevance: 83.96 | Views last month: 6 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
The Wetland Grant Database (WGD) houses grant data for Wetland Program Development Grants (created by EPA in 1990 under the Clean Water Act Section 104(b)(3) authority). The Wetland Grants...
Search relevance: 83.08 | Views last month: 6 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
The National Park Service (NPS) Water Resources Division (WRD) compiles the Hydrographic and Impairment Statistics (HIS) Database for all park units. One of the goals of HIS is to track surface...
Search relevance: 81.24 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 07:24 PM -
Quality Data Asset includes all current and historical data on the quality of water with regard to the presence of water pollutants of all kinds regulated by the Clean Water Act. Under the new...
Search relevance: 80.57 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
This data set contains Missouri's 2016 Section 303(d) Listed Waters - Rivers and Streams and is a list of certain impaired waters in the State of Missouri. The list is a requirement of the Federal...
Search relevance: 80.08 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 06:06 PM -
This data set contains those Missouri waters which have been assessed as impaired in 2016, including waters on Missouri's EPA Approved 2016 Section 303(d) List, but also including waters not on...
Search relevance: 78.38 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:06 PM -
This data set contains those Missouri waters which have been assessed as impaired in 2016, including waters on Missouri's EPA Approved 2016 Section 303(d) List, but also including waters not on...
Search relevance: 74.57 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:06 PM -
Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in response to the Government...
Search relevance: 69.36 | Views last month: 7 | Catalog Last Checked: September 10, 2026 at 07:14 PM -
Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in response to the Government...
Search relevance: 69.36 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 07:25 PM -
Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in response to the Government...
Search relevance: 69.36 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 07:24 PM
