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New Jersey 2010 Integrated Water Quality Monitoring and Assessment Report
(includes 305(b) Report and 303(d) List)

Current Status of the 2010 Integrated Report

A revised final version of the 2010 303(d) List of Water Quality Limited Waters was approved by USEPA on January 24, 2012 and has been adopted by the Department as an amendment to the Statewide Water Quality Management Plan pursuant to N.J.A.C. 7:15. The final 2010 Integrated Report has been revised to reflect changes made in response to USEPA's review. The 2010 Status of Designated Uses by Subwatershed, 2010 Two-Year TMDL Schedule, and 2010 Delisting Document have been revised as well. A notice of adoption was published in the March 5, 2012 New Jersey Register. The Final 2010 Integrated Report and its key components are provided below:

The 2010 Status of Designated Uses by Subwatershed report was generated using USEPA's Assessment Database (ADB) assessment unit summary report format. Click on the fact sheet below or assistance in reading the report in this new format.

Fact Sheet: How to Use The 2010 Status of Designated Uses by Subwatershed Report

Key Findings of the 2010 Integrated Report

Overall statewide water quality has improved or remained stable over time; localized changes in water quality are usually associated with changes in land use. Generally, water quality declines as the intensity of land use increases. The largest concentrations of high quality waters are located in the least developed regions of the State, specifically the upper northwest and the Pinelands region.
Statewide, 355 miles of rivers and streams, and 1,465 acres of lakes located within 23 subwatersheds (two percent) fully support all designated uses (except for fish consumption).
Approximately 12,400 miles of rivers and streams (60 percent) and 33,000 acres of lakes do not support the aquatic life use, mostly due to nutrient over-enrichment.
Only 256 miles of rivers and streams, and 67 acres of lakes located in 42 subwatersheds are not assessed at all.
22 of New Jersey's 952 HUC 14 subwatersheds (2%) fully support all designated uses (except for fish consumption).
The most frequent causes of water quality impairment are pathogens, which include E. coli, Enterococcus, fecal coliform, and total coliform. Pathogens are the primary cause of recreational use impairment as well as shellfish harvesting restrictions.
48% of all waters designated for the drinking water supply use fully support the use, 24% do not, and 28% are not assessed. Most of the waters that do not support this use are not used for drinking water purposes. (Click here to see map of spatial extent.)
17% of New Jersey waters, including lakes, ponds, rivers, and streams, fully support recreational uses, 43% do not support this use, and 40% are not assessed. (Click here to see map of spatial extent.)
22% of New Jersey waters fully support the general aquatic life use, 66% do not support the use, and 12% are not assessed. (Click here to see map of spatial extent.)
22% of waters designated for the trout aquatic life use fully support this use, 64% do not support this use, and 14% are not assessed. (Click here to see map of spatial extent.)
90% of shellfish waters are classified as harvestable. Harvestable waters include: approved with no restrictions, seasonal harvest, and special restrictions. Only shellfish waters approved with no restrictions are considered to fully support the designated use. 60% of waters designated for the shellfish harvest for consumption use fully support this use; 40% do not support this use. (Click here to see map of spatial extent.)
A very small percentage (0.3 percent) of waters fully support the fish consumption use and 62% of waters are not assessed. 38% of fish in assessed waters contain levels of mercury or PCBs above what is safe to consume. (Click here to see map of spatial extent.)

The 2010 303(d) List identifies 38 pollutants causing water quality impairment in one or more assessment units for a total of 1,831 listings, of which 140 are attributed to “cause unknown”. These waters require development of "total maximum daily loads" (TMDLs) to reduce pollutants and restore water quality.

260 subwatershed/pollutant combinations were removed from the 303(d) List because water quality was restored (36), improved assessment methods verified that water quality standards were attained (14), or a TMDL was established (210).
The "top ten" most frequent pollutants comprise over 75% of the 2010 303(d) List. They are, in order of frequency: PCBs, Mercury, DDT (and its metabolites), Dissolved Oxygen, Total Phosphorus, pH, Cause Unknown, Temperature, Total Suspended Solids, and Arsenic.

Delaware River and Bay Water Quality Assessment

Delaware River waters are assessed by the Delaware River Basin Commission (DRBC). DRBC's 2010 Water Quality Assessment Report is available on the DRBC Web site at index.htm. Delaware River waters that do not fully support applicable designated uses are identified in a separate table on New Jersey's Final 2010 303(d) List.

Additional Information

Details about the 2010 Integrated Report development process, including draft documents and public notices, are available on the 2010 Integrated Report Schedule/Milestones web page. All current and historic water quality assessment documents, as well as relevant USEPA guidance, are available on the Technical Support and Related Documents web page. Additional information about the Integrated Report Process is also available on the General Information web page. For more information, please contact the Bureau of Water Quality Standards and Assessment at (609) 777-1753.

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