Water Quality
Summary of Receiving Waters
- NH MS4 Permit Related Impairments Status Based on NH 2012 303(d) list in 2017 EPA MS4 Permit- Based on NH 2012 303(d) list in 2017 EPA NH MS4 Permit. This is a spreadsheet based on the information in the 2017 NH MS4 permit indicating what impairments each NH MS4 has. May be used for initial planning purposes for the Minimum Control Measure #1: Outreach and Education requirements related to impairments. (Update Coming Soon)
- Municipal Water Quality Report based off the 2018 303(d) list.
- Municipal Water Quality Report based off the 2018 303(d) list organized by community.
- Waterbodies added to the 2018 303(d) list: This document lists all of the waterbodies that were added to the 2018 303(d) list.
- Waterbodies removed from the 2018 303(d) list: This document lists all of the waterbodies that were removed from the 2018 303(d) list from the 2016 to 2018 cycles.
2018 303(d) Online Assessment Viewer Tutorial Videos (Coming Soon)
2020/2022 Surface Water Quality Assessment Viewer
These interactive maps allow individuals to see the spatial extent of assessment units, see where sampling data was collected, access water quality data summaries used in assessments and view impaired waters.