Kentucky River Basin Asessment Report

WQ Standards

About This Report Map Locator Tool Report Index More Information

 

Report Home Page
North Fork Subbasin
Middle Fork Subbasin
South Fork Subbasin
Central Subbasin
Lower Subbasin
Basin Overview
Ranked Watersheds
Targeted Watersheds
Printable Reports
Feedback & Contacts

KWRI Watershed LogoBack to Watershed

Page

 

 

 

Be advised:

please read

our disclaimer

 

 

 

 Water Quality Standards: A Reference Table
Measurement Units of Measurement Acceptable Levels Average in KY*
WAH DWS MCL Other
Conventional Parameters
pH pH units (1 to 14, low is acid) 6 to 9       7.4
Temperature degrees Celsius (Oct. avg.) <22.2       14.7
  degrees Celsius (maximum) <25        
Dissolved oxygen milligrams per liter >4       9.1
Alkalinity (buffering) milligrams calcium carbonate per liter >20       90.1
Hardness milligrams calcium carbonate per liter         138.5
Chloride milligrams per liter <600 <250     13.2
Conductivity micro-mho per centimeter       <800 335
Total organic carbon (TOC) milligrams per liter         3.5
Total suspended solids (TSS) milligrams per liter         42.4
Fecal Bacteria
Fecal coliform bacteria colonies per 100 milliliters         <200
for swimming (KY) colonies per 100 milliliters       <200  
for secondary contact (KY) colonies per 100 milliliters       <1000  
drinking water pre-treatment colonies per 100 milliliters   <2000      
Fecal streptococci colonies per 100 milliliters          
Nutrient Parameters
Ammonia nitrogen milligrams per liter (at pH 7.4, 15C) <6.4       0.15
Nitrate nitrogen milligrams per liter   <10 <10   0.85
Phosphorus, total milligrams per liter       <0.1 0.15
Sulfate milligrams per liter   <250     63.3
Metals and Mineral Parameters
Aluminum milligrams per liter         0.7
Antimony milligrams per liter   <0.146 <0.006    
Barium milligrams per liter   <1 <2   0.05
Beryllium milligrams per liter <0.053   <0.004    
Boron milligrams per liter          
Calcium milligrams per liter         39.9
Chromium milligrams per liter (at hardness 100 ) <0.011 <0.05 <0.01   0.0026
Cobalt milligrams per liter          
Copper milligrams per liter <0.0012 <1.3      
Iron milligrams per liter <1       1.34
Lead milligrams per liter (at hardness 100 ) <0.003 <0.05     0.0127
Lithium milligrams per liter          
Magnesium milligrams per liter         10.6
Manganese milligrams per liter   <0.05     0.211
Nickel milligrams per liter <0.158        
Potassium milligrams per liter          
Selenium milligrams per liter <0.004   <0.05    
Silicon milligrams per liter          
Silver milligrams per liter <0.004        
Sodium milligrams per liter         14.8
Strontium milligrams per liter          
Thallium milligrams per liter   <0.013 <0.002    
Vanadium milligrams per liter          
Zinc milligrams per liter (at hardness 100 ) <0.106       0.0291
Pesticide/Herbicide Parameters
Atrazine micrograms per liter     <3    
Chlorpyrifos micrograms per liter          
2,4-D micrograms per liter     <70    

WAH, Warm water aquatic habitat standards. 

DWS, domestic water supply limits. 

MCL, US EPA maximum contaminant level.

*Other: conductivity, limit for Ohio River; phosphorus, EPA guideline for concern (KY standard is based on ecological effects).
*Source for Kentucky averages is Division of Water Ambient Monitoring Database, 1985-1994.
Table was derived from US EPA National Primary Drinking Standards (12/99) and http://water.nr.state.ky.us/ww/ramp/rmtests.htm. Consult these sources for full details of regulations. Blank fields indicate no legal standard or no data available.

 

  Help File Links:  Data Assessment  Ranking Indicators  Water Quality Data  More Information

   Help Windows:   Data Assessment  Ranking Indicators  Water Quality Data More Information