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EPA National Nutrient Criteria Program Numeric Nutrient Criteria: Methods for Developing Inland Criteria.

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Presentation on theme: "EPA National Nutrient Criteria Program Numeric Nutrient Criteria: Methods for Developing Inland Criteria."— Presentation transcript:

1 EPA National Nutrient Criteria Program http://www.epa.gov/waterscience/criteria/nutrient Numeric Nutrient Criteria: Methods for Developing Inland Criteria Jacques L. Oliver U.S. EPA Office of Water, Office of Science and Technology Health and Ecological Criteria Division Washington, D.C.

2 EPA National Nutrient Criteria Program http://www.epa.gov/waterscience/criteria/nutrient National Nutrient-related listing and TMDL Results Of 75,677 impairments nationwide, 15,101 (20%) are “nutrient-related” (defined as ‘nutrients, organic enrichment/oxygen depletion, noxious plants, algal growth, and ammonia’). Of 40,698 TMDLs nationwide, 7,412 (18%) are “nutrient-related” Based on the most recent 303(d) list data available in ATTAINS as of January 27, 2010 -- http://www.epa.gov/waters/tmdl/expert_query.html

3 EPA National Nutrient Criteria Program http://www.epa.gov/waterscience/criteria/nutrient States’ 303(d) Listed Water Quality ‘Nutrient-related’ Impairments Based on information in Expert Query (ATTAINS) as of 10/23/2009. Of 75,675 impairments nationwide, 15,101 (20%) are due to nutrient-related defined as ‘nutrients, organic enrichment/oxygen depletion, noxious plants, algal growth, and ammonia’. This data is based on the most recent 303(d) list data available in ATTAINS. AK HI GU CNMI AS PR VI >100 and <200 listings due to nutrients (6) Greater than 800 303(d) listings for nutrients (5) >200 and <800 listings due to nutrients (16) Less than 100 listings due to nutrients (29)

4 EPA National Nutrient Criteria Program http://www.epa.gov/waterscience/criteria/nutrient ‘Nutrient-related’ TMDLs Based on information in Expert Query (ATTAINS) as of 01/14/2010. 7,261 TMDLs were nutrient-related. Nutrient-related is defined as ‘nutrients, organic enrichment/oxygen depletion, noxious plants, algal growth, and ammonia’. AK HI GU CNMI AS PR VI >100 and <200 TMDLs for nutrients (9) Greater than 800 TMDLs for nutrients (0) >200 and <800 TMDLs for nutrients (12) Less than 100 TMDLs for nutrients (32)

5 EPA National Nutrient Criteria Program http://www.epa.gov/waterscience/criteria/nutrient

6 EPA National Nutrient Criteria Program http://www.epa.gov/waterscience/criteria/nutrient Questions?


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