-Sulfates
Suffery or rotten egg smell high levels- over 500 mgll, temporary diarrhea
-Nitrogen
Nitrates - blue baby syndrome
Limit-10mg/l
-Eutrophication
Too many nutrients.
Too much algae
Leads to oxygen drops
Fish kills
-Phosphorus
Causes eutrophication
From agricultural runoff - detergents
Removal may cause rise in sewerbills
-Toxins
Lead, arsenic, some solvents, Pesticides
Mutagens- can cause mutations in DNA
Carcinogens- cause cancer (in peanut butter)
-Pathogens-
bacteria -typhoid, cholera
Viruses - hepatitis, polio, Norwalk virus
Parasites - gladiators, cryptosporidium, amoebas, worms
Use indicator species - E. Coli (usually very recent)
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-Chlorine Residual
Cl in a form that will kill germs hypochlorite - bleach
Hypochloronsacid - Cl + water
Need to have residual in water lines
Have 0.2 to 1.0 mg/L of residual
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Chapter 5
-Water Pollution Point Sources- factories, power plants, poorly operated wasterwater plants, food processing
Large feedlots
Large pollution potential, easy to identify Non Point - homes, small farms, golf courses harder to regulate
Groundwater
Low turbidty - low treatment, lower cost
Over pumping can cause problems
Hard to remove pollutants
-Sources of groundwater-
Industry
Military
Septic tanks
Landfills
Mining
Waste from oil & gas production
Agriculture
Street runoff
Salt water intrusion
-Preventing groundwater pollution-
Willhend protection
Zoning
Monitoring
Every city required to have this
-Remediation of groundwater-
Bioremediation (needs to be organic material)
Extract, treat, reinfect
Evaporate
-Preventing Surface Pollution-
Good watershed mgt.
Protection zones
On site retention
--Less pollution Less storm runoff Use water for landscape
Ocean Pollution
1992 - congress banned ocean dumping
-1965 - congress passed water quality act-
Goal- reduce stream pollution
Set stream standards
No individual