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On This Page 303(d) Listed Waters for 2010

Data are also available for these cycles:
2002 2004 2006 2008

Waterbody Changes from Prior Cycle

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Puerto Rico Water Quality Assessment Report

Assessed Waters of Puerto Rico by Watershed

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Display impaired waters and TMDL information only


NOTE: The data and information provided on this web site may differ from the information provided in the original Puerto Rico 2010 Section 305(b) Report. This is a result of differences in the way the state's assessment database tracks information and how the national data system prepares summary reports. Puerto Rico's 2010 Section 305(b) Water Quality Report is available at http://www.gobierno.pr/NR/rdonlyres/71E6B4C6-0825-4451-8A2F-983F4524F03E/0/PartI2010305_b_y303_d_RevisedSeptember2010x.pdf. The 2010 303(d) List can be found on Appendix I.



Site-specific Targeted Monitoring Summary Results

Puerto Rico (2010)

Description of this table
 
    199.3 547.0 .1 322.5
       65.4
   
                          
                          
                          
                          
    4,187.2 8,093.0 4.9 196.8
                          
                          
                          
           4,187.2     8,093.0     4.9     196.8
              156.6     .0     .3     .0
                    4,030.6           8,093.0           4.7           196.8
4,386.5 8,640.0 5.0 519.2
5,394.0 12,146.0 Unavailable 550.0
81.3 71.1 Unavailable 94.4

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2010


Site-specific Targeted Monitoring Results

Puerto Rico Rivers and Streams 2010

Description of this table

All
Rivers and Streams

5,394.0 Miles of Rivers and Streams

Assessed 4,386.5
Unassessed 1,007.6
Total Miles 5,394.0







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Description of this table

Assessed
Rivers and Streams

4,386.5 Miles of
Assessed Rivers and Streams

Good 199.3
Threatened .0
Impaired 4,187.2
Total Miles Assessed 4,386.5







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Description of this table

Threatened and Impaired
Rivers and Streams

4,187.2 Miles of
Threatened and Impaired
Rivers and Streams

156.6
.0
.0
4,030.6
Total Threatened and Impaired 4,187.2

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Puerto Rico Rivers and Streams 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life 4,229.9 4.7 .0 95.3 color.gifcolor.gif
Primary Contact Recreation 3,422.1 8.0 .0 92.0 color.gifcolor.gif
Public Water Supply 3,694.8 14.7 .0 85.3 color.gifcolor.gif
Secondary Contact Recreation 3,598.2 43.9 .0 56.1 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Puerto Rico Rivers and Streams 2010

Description of this table
Arsenic Metals (other than Mercury) color.gif 3,460.9
Cyanide Toxic Inorganics color.gif 3,200.6
Fecal Coliform Pathogens color.gif 3,149.3
Turbidity Turbidity color.gif 2,667.5
Surfactants Other Cause color.gif 1,827.6
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 1,539.7
Copper Metals (other than Mercury) color.gif 1,496.5
Lead Metals (other than Mercury) color.gif 1,008.2
Ammonia, Total Ammonia color.gif 461.1
Thermal Modifications Temperature color.gif 450.5
Mercury Mercury color.gif 401.3
Phosphorus, Total Nutrients color.gif 301.2
Pesticides Pesticides color.gif 258.2
pH pH/Acidity/Caustic Conditions color.gif 219.7
Oil and Grease Oil and Grease color.gif 122.6
Cadmium Metals (other than Mercury) color.gif 51.4
Selenium Metals (other than Mercury) color.gif 40.8
Other Inorganics Toxic Inorganics color.gif 22.0
Silver Metals (other than Mercury) color.gif 14.6

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Site-specific Targeted Monitoring Results

Probable Sources
Puerto Rico Rivers and Streams 2010

Description of this table
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 4,172.6
Animal Feeding Operations (Nps) Agriculture color.gif 2,882.7
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 2,501.9
Minor Industrial Point Sources Industrial color.gif 2,477.0
Agriculture Agriculture color.gif 2,214.2
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 2,039.6
Landfills Land Application/Waste Sites/Tanks color.gif 1,841.9
Major Municipal Point Sources Municipal Discharges/Sewage color.gif 1,222.6
Minor Municipal Point Sources Municipal Discharges/Sewage color.gif 709.0
Surface Mining Resource Extraction color.gif 563.8
Land Development Construction color.gif 508.5
Package Plant Or Other Permitted Small Flows Discharges Municipal Discharges/Sewage color.gif 324.5
Major Industrial Point Sources Industrial color.gif 170.8
Marinas And Recreational Boating Recreational Boating And Marinas color.gif 18.8
Upstream Impoundments (E.G., Pl-566 Nrcs Structures) Hydromodification color.gif 11.8

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Site-specific Targeted Monitoring Results

Puerto Rico Lakes, Reservoirs, and Ponds 2010

Description of this table

All
Lakes, Reservoirs, and Ponds

12,146.0 Acres of Lakes, Reservoirs, and Ponds

Assessed 8,640.0
Unassessed 3,506.0
Total Acres 12,146.0







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Description of this table

Assessed
Lakes, Reservoirs, and Ponds

8,640.0 Acres of
Assessed Lakes, Reservoirs, and Ponds

Good 547.0
Threatened .0
Impaired 8,093.0
Total Acres Assessed 8,640.0







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Description of this table

Threatened and Impaired
Lakes, Reservoirs, and Ponds

8,093.0 Acres of
Threatened and Impaired
Lakes, Reservoirs, and Ponds

.0
.0
.0
8,093.0
Total Threatened and Impaired 8,093.0

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Puerto Rico Lakes, Reservoirs, and Ponds 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life 8,640.0 6.3 .0 93.7 color.gifcolor.gif
Primary Contact Recreation 8,424.0 71.8 .0 28.2 color.gifcolor.gif
Public Water Supply 7,323.0 60.3 .0 39.7 color.gifcolor.gif
Secondary Contact Recreation 8,424.0 100.0 .0 .0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Puerto Rico Lakes, Reservoirs, and Ponds 2010

Description of this table
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 7,504.0
Arsenic Metals (other than Mercury) color.gif 3,461.0
Fecal Coliform Pathogens color.gif 2,379.0
Pesticides Pesticides color.gif 2,133.0
Cyanide Toxic Inorganics color.gif 1,748.0
Phosphorus, Total Nutrients color.gif 1,273.0
Surfactants Other Cause color.gif 1,188.0
Mercury Mercury color.gif 1,000.0
Turbidity Turbidity color.gif 713.0
Copper Metals (other than Mercury) color.gif 634.0
pH pH/Acidity/Caustic Conditions color.gif 559.0

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Site-specific Targeted Monitoring Results

Probable Sources
Puerto Rico Lakes, Reservoirs, and Ponds 2010

Description of this table
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 7,227.0
Agriculture Agriculture color.gif 3,680.0
Animal Feeding Operations (Nps) Agriculture color.gif 3,585.0
Minor Industrial Point Sources Industrial color.gif 2,187.0
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 2,183.0
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 1,086.0
Upstream Impoundments (E.G., Pl-566 Nrcs Structures) Hydromodification color.gif 700.0
Landfills Land Application/Waste Sites/Tanks color.gif 560.0
Major Industrial Point Sources Industrial color.gif 285.0
Marinas And Recreational Boating Recreational Boating And Marinas color.gif 216.0

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Site-specific Targeted Monitoring Results

Puerto Rico Bays and Estuaries 2010

Description of this table
Pie chart not displayed because total size for Bays and Estuaries is unavailable.
Assessed 5.0
Unassessed Unavailable
Total Square Miles Unavailable







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Description of this table

Assessed
Bays and Estuaries

5.0 Square Miles of
Assessed Bays and Estuaries

Good .1
Threatened .0
Impaired 4.9
Total Square Miles Assessed 5.0







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Description of this table

Threatened and Impaired
Bays and Estuaries

4.9 Square Miles of
Threatened and Impaired
Bays and Estuaries

.3
.0
.0
4.7
Total Threatened and Impaired 4.9

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Puerto Rico Bays and Estuaries 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life 4.9 4.5 .0 95.5 color.gifcolor.gif
Primary Contact Recreation 5.0 1.9 .0 98.1 color.gifcolor.gif
Secondary Contact Recreation 5.0 4.4 .0 95.6 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Puerto Rico Bays and Estuaries 2010

Description of this table
Fecal Coliform Pathogens color.gif 4.9
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 4.6
Cyanide Toxic Inorganics color.gif 3.9
Arsenic Metals (other than Mercury) color.gif 3.9
Turbidity Turbidity color.gif 3.9
Oil and Grease Oil and Grease color.gif 3.8
Ammonia, Total Ammonia color.gif 3.8
Surfactants Other Cause color.gif 3.8
pH pH/Acidity/Caustic Conditions color.gif 3.7
Phosphorus, Total Nutrients color.gif 3.7
Copper Metals (other than Mercury) color.gif .1
Mercury Mercury color.gif .1
Lead Metals (other than Mercury) color.gif .1

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Site-specific Targeted Monitoring Results

Probable Sources
Puerto Rico Bays and Estuaries 2010

Description of this table
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 4.9
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 4.1
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 4.0
Animal Feeding Operations (Nps) Agriculture color.gif 3.9
Major Industrial Point Sources Industrial color.gif .7
Minor Municipal Point Sources Municipal Discharges/Sewage color.gif .6
Landfills Land Application/Waste Sites/Tanks color.gif .4
Agriculture Agriculture color.gif .2
Minor Industrial Point Sources Industrial color.gif .1
Major Municipal Point Sources Municipal Discharges/Sewage color.gif .1

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Site-specific Targeted Monitoring Results

Puerto Rico Coastal Shoreline 2010

Description of this table

All
Coastal Shoreline

550.0 Miles of Coastal Shoreline

Assessed 519.2
Unassessed 30.8
Total Miles 550.0







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Description of this table

Assessed
Coastal Shoreline

519.2 Miles of
Assessed Coastal Shoreline

Good 322.5
Threatened .0
Impaired 196.8
Total Miles Assessed 519.2







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Description of this table

Threatened and Impaired
Coastal Shoreline

196.8 Miles of
Threatened and Impaired
Coastal Shoreline

.0
.0
.0
196.8
Total Threatened and Impaired 196.8

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Puerto Rico Coastal Shoreline 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life 496.4 64.3 .0 35.7 color.gifcolor.gif
Primary Contact Recreation 510.1 77.2 .0 22.8 color.gifcolor.gif
Secondary Contact Recreation 503.7 100.0 .0 .0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Puerto Rico Coastal Shoreline 2010

Description of this table
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 138.1
Enterococcus Bacteria Pathogens color.gif 98.6
Fecal Coliform Pathogens color.gif 92.8
pH pH/Acidity/Caustic Conditions color.gif 69.5
Turbidity Turbidity color.gif 67.0
Thermal Modifications Temperature color.gif 20.2
Copper Metals (other than Mercury) color.gif 7.8
Ammonia, Total Ammonia color.gif 7.8
Arsenic Metals (other than Mercury) color.gif 7.8

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Site-specific Targeted Monitoring Results

Probable Sources
Puerto Rico Coastal Shoreline 2010

Description of this table
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 194.3
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 194.3
Upstream Impoundments (E.G., Pl-566 Nrcs Structures) Hydromodification color.gif 99.8
Major Industrial Point Sources Industrial color.gif 91.7
Major Municipal Point Sources Municipal Discharges/Sewage color.gif 47.0
Agriculture Agriculture color.gif 41.0
Marinas And Recreational Boating Recreational Boating And Marinas color.gif 35.1
Land Development Construction color.gif 20.3
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 13.7
Minor Municipal Point Sources Municipal Discharges/Sewage color.gif 7.8
Landfills Land Application/Waste Sites/Tanks color.gif 7.0

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Puerto Rico Causes of Impairment for Reporting Year 2010


Description of this table
NOTE: Click on the underlined Cause of Impairment Group to see a list of specific state causes of impairment making up the Cause of Impairment Group. See also Pollution categories summary document (PDF) (20 pp, 557K, About PDF) for brief, non-technical descriptions of general cause categories.
Size of Assessed Waters with Listed Causes of Impairment
Ammonia 461.1 3.8 7.8
Mercury 401.3 1,000.0 .1
Metals (other than Mercury) 3,460.9 3,461.0 3.9 7.8
Nutrients 301.2 1,273.0 3.7
Oil and Grease 122.6 3.8
Organic Enrichment/Oxygen Depletion 1,539.7 7,504.0 4.6 138.1
Other Cause 1,827.6 1,188.0 3.8
Pathogens 3,149.3 2,379.0 4.9 116.4
Pesticides 258.2 2,133.0
pH/Acidity/Caustic Conditions 219.7 559.0 3.7 69.5
Temperature 450.5 20.2
Toxic Inorganics 3,222.6 1,748.0 3.9
Turbidity 2,667.5 713.0 3.9 67.0

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Puerto Rico Probable Sources Contributing to Impairments
for Reporting Year 2010

Description of this table
NOTE: Click on the underlined Probable Source Group to see a list of specific state Probable Sources making up the Probable Source Group.
Size of Assessed Waters with Probable Sources of Impairments
Agriculture 3,693.4 6,554.0 4.0 41.0
Construction 508.5 20.3
Hydromodification 11.8 700.0 99.8
Industrial 2,585.3 2,187.0 .8 91.7
Land Application/Waste Sites/Tanks 1,841.9 560.0 .4 7.0
Municipal Discharges/Sewage 4,172.6 7,227.0 4.9 194.3
Recreational Boating And Marinas 18.8 216.0 35.1
Resource Extraction 563.8
Urban-Related Runoff/Stormwater 2,501.9 2,183.0 4.0 194.3

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Puerto Rico TMDL Alternatives by Cause of Impairment 2010


No TMDL Alternatives reported.

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Puerto Rico Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards

Description of this table
NOTE: Click on the underlined "Number of Waters Attaining" value for a detailed list of those previously 303(d)-listed waters now attaining all applicable water quality standards.
2004 color.gif 1 1
2010 color.gif 1 1

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Puerto Rico Causes of Impairment for 303(d) Listed Waters

Description of this table
NOTE: Click on a cause of impairment (e.g. pathogens) to see the specific state-reported causes that are grouped to make up this category. Click on the "Number of Causes of Impairment Reported" to see a list of waters with that cause of impairment.
Metals (other than Mercury) color.gif 148
Pathogens color.gif 122
Organic Enrichment/Oxygen Depletion color.gif 77
Toxic Inorganics color.gif 76
Turbidity color.gif 62
Other Cause color.gif 44
pH/Acidity/Caustic Conditions color.gif 13
Temperature color.gif 12
Pesticides color.gif 10
Ammonia color.gif 9
Mercury color.gif 9
Nutrients color.gif 8
Oil and Grease color.gif 3

Total: 593 Causes of Impairment

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Puerto Rico Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

Description of this table
NOTE: Click on the underlined "Pollutant" value to see associated listed waters for which a TMDL was developed. Click on the underlined "Number of TMDLs" value to see a listing of those TMDLs for the pollutant.
Number of Causes of
Impairment Addressed
Fecal Coliform color.gif 313 313
Biochemical Oxygen Demand (BOD) color.gif 4 4
Copper color.gif 2 2
Total Ammonia color.gif 2 2

Total: 321 TMDLs; 321 Causes of Impairment Addressed


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Puerto Rico Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.


Description of this table
NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year.
2002 color.gif 14 14
2003 color.gif 4 4
2007 color.gif 27 27
2008 color.gif 8 8
2010 color.gif 52 52
2011 color.gif 118 118
2012 color.gif 98 98

Total: 321 TMDLs; 321 Causes of Impairment Addressed

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