Water Quality Report (WQR) Data Dictionary
|Water Quality Data|
| This section integrates NPDES facility and permit information with
additional information on the waterbodies that these facilities are located on or near. All of the
data provided in this section comes from the EPA's Office of Water; see individual sections for more
Designated Use information can come from the Water Quality Standards (WQS) database and/or the National Assessment Database (305(b)). Typically, the uses identified in WQS are the ones used in 305(b) when the water assessments are performed, but this is not guaranteed. Dates from WQS signify the date of the standards document.
|For the Water Quality data to be available, the following must apply:
|# CSO Outfalls|
|A combined sewer system is a wastewater collection system owned by a municipality which conveys sanitary wastewater (domestic, commercial, and industrial) and stormwater through a single pipe system to a publicly-owned treatment works. A combined sewer overflow (CSO) refers to a discharge of untreated wastewater from a combined sewer system at a point prior to the headworks of the publicly-owned treatment works. (59 FR 18688) CSOs generally occur in response to wet weather events. Most combined sewer systems are designed to discharge excess flow directly to surface water bodies, such as streams, rivers, estuaries, and coastal waters. The source of the information provided on CSOs is the 2004 Report to Congress published by the EPA's Office of Water.|
|Is the facility located on water with an Aquatic Life and Wildlife National Designated Use?|
This National Designated Use includes all unlimited aquatic life-,
wildlife-, and habitat protection-related state designated uses. It
also includes state designated uses related to limited aquatic resources
due to natural water quality conditions (e.g., intermittent, low, or
high flow). The Aquatic Life and Wildlife National Designated Use
includes protection and propagation (contributing to maintenance of a
healthy balanced population) of fish, shellfish, wildlife, plants, etc.
can include state designated uses like "Salmonid", "wetlands",
"endangered species critical habitat".|
A "yes" or "no" will indicate whether the NPDES id triggered the Habitat flag. The database for which the flag was triggered is noted in parenthesis. WQS stands for "Water Quality Standards" database, and NAD stands for the "National Assessment Database."
|Is the facility located on water with an Exceptional and Outstanding Significance National Designated Use?|
The National Designated Use of Exceptional & Outstanding Significance
includes non-degradation i.e., Tier 3 (Outstanding Natural Resource
Waters), and exceptional (Tier 2.5) anti-degradation waters.|
A "yes" or "no" will indicate whether the NPDES id triggered the Exceptional flag. The database for which the flag was triggered is noted in parenthesis. WQS stands for "Water Quality Standards" database, and NAD stands for "National Assessment Database."
|Is the facility located on water with a Primary or Secondary Contact Recreation National Designated Use?|
This designation refers to primary or secondary contact recreation
designated uses. Primary Contact Recreation includes protection for when the human health
risks to be avoided are through the whole body (immersion), and
incidental ingestion exposure pathways. Secondary Contact Recreation
(e.g., boating, wading) includes protection for when the human health
risks to be avoided are through the limited body contact and incidental
ingestion exposure (e.g., splashes, and aerosol) pathways.|
A "yes" or "no" will indicate whether the NPDES is triggered the Recreational Use flag. The database for which the flag was triggered is noted in parenthesis. WQS stands for "Water Quality Standards" database, and NAD stands for "National Assessment Database."
|Is the facility or outfall within 15 Miles Upstream of a Drinking Water Intake?|
|These data are the results of a September 2006 analysis via the Drinking Water Mapping Application (DWMA), an EPA Office of Ground Water and Drinking Water (OGWDW) Intranet GIS application. The analysis used an Oracle Spatial convex hull technique to generate analytical source protection area polygons related to networks of National Hydrography Dataset-based drains. The analysis used 4QTR 2004 SDWIS/FED data and July 2006 data.|
|Is the facility located on water with a Shellfish National Designated Use?|
The Shellfish Consumption National Designated Use includes human
consumption of shellfish (principally molluscan) when the human health
risk to be avoided is primarily microbial pathogens. It also includes
wild and planted, and food produced in, and/or processed by open water
aquaculture (without food and/or pharmaceutical additions), including
shellfish relay waters.
A "yes" or "no" will indicate whether the NPDES id triggered the Shell Fish Use Designation flag. The database for which the flag was triggered is noted in parenthesis. WQS stands for "Water Quality Standards" database, and NAD stands for "National Assessment Database."
|Is the facility located on a beach that has had an advisory or closing within the last year?|
These data come from eBEACHES, a system of data collection, including
hardware, software, and electronic connections that states use to submit
beach advisory and closing data to EPA. As a BEACH Act Grant requirement, states must submit their annual data to EPA by January 31 of the
following year, and after data validation procedures, eBEACHES is
updated accordingly. For more information, please see:
|Is the facility located on a water for which one of the state Designated Uses is not fully supported?|
These data come from the National Water Quality Inventory Report to
Congress (305(b) report), which rates waters either as:
|Is the facility discharging into a water that has been identified as impaired (category 4 or category 5)?|
Under section 303(d) of the CWA, states, territories, and authorized tribes are required to develop lists of impaired waters. These are waters for which technology-based regulations and other required controls are not stringent enough to meet the water quality standards set by states. The law requires that states establish priority rankings for waters on the lists and develop Total Maximum Daily Loads (TMDLs), for these waters. A TMDL is a calculation of the maximum amount of a pollutant that a water body can receive and still safely meet water quality standards. For more information about impaired waters or TMDLs, please visit EPA's overview of impaired waters and Total Maximum Daily Loads Program web page. For detailed information on the categorization of impaired waters, see Section V of the 2006 Integrated Report Guidance.|
Note that the locational data (latitude and longitude) are needed to index NPDES permits to the National Hydrography Dataset (NHD) Reach Addressing Database (RAD). For some facilities, locational data are not available, so whether the facilities directly discharge into impaired waters cannot be determined.
For information on the completeness of 305b and 303d impairment data by state, see the Office of Wetlands, Oceans, and Watersheds' NHD Reach Indexing Status by State page.
|Is the facility that discharges into a 303(d) listed impaired water a potential contributor to a cause of impairment?|
|The expected parameters based on the Standard Industrial Classification (SIC) code of the
facility are compared against the master 303(d) listed water impairments to see if the expected discharge might
contribute to the 303(d) impairment. These expected parameters are identified in CWA's Typical Pollutant Concentration
(TPC) tables and may be especially useful in analyzing minor facilities for which the national system may not
contain any limit information. This analysis is made based on the facility's SIC code. As an example,
if the listed water is identified as being impaired by nutrients and the NPDES facility discharges NITROGEN, then the
NPDES facility may have contributed to this water impairment. |
A "yes" or "no" will indicate whether the NPDES id triggered the flag in the Impaired Waters Database.
|Total # of "Yes" Responses Shown (0-9)|
|This is a tally of the total number of "yes" indicators in the previous nine water quality columns, starting from the left with "Is the facility located on water with an Aquatic Life and Wildlife National Designated Use?" and ending with " Is the facility a potential contributor to impairment based on Typical Pollutant Criteria?". This can be used for facility/ permit ranking purposes.|
|Has the Clean Watershed Needs Survey identified the total federal needs amount for this facility?|
These data come from the 2004 Clean Watershed Needs Survey conducted by
the EPA's Office of Water. For more information, please see:|