WATER ENVIRONMENTAL INDICATORS -- 1997
Point Source Pollution Management
Number of Point Source Discharges
402
Wastewater Treated (millions of gallons per day)
54
Wastewater Generated Per Capita (gallons per person per day)
90
Exceedance of Daily Permit Limits for Groups of Known Sources
159
Average Water Quality Index Values
Lakes 73 - Good
Creeks 70 - Good
Countywide (lakes and streams combined) 71 - Good
Exceedance of Surface Water Quality Standards
Creeks (Total)
24
Dissolved Oxygen
3
Turbidity
19
pH
2
Lakes (Total)
13
Chlorophyll-a
8
Turbidity
2
Fecal Coliform
3
Exceedance of Surface Water Quality Action Levels
Creeks (Total)
263
Fecal Coliform Bacteria
107
Total Phosphorus
64
Nitrate
53
TKN
11
Ammonia
4
Turbidity
19
Biochemical Oxygen Demand
0
Dissolved Oxygen
3
pH
2
Lakes (Total)
26
Chlorophyll-a
8
Secchi
5
Total Phosphorus
5
Turbidity
2
Nitrate
3
Fecal coliform
3
Water Supply
Drinking Water Supplied by CMUD (Million Gallons/Day)
84
Population Using CMUD Drinking Water
427,200
Selected Sources of Potential Groundwater Contamination
Septic Tank Systems Permited/Installed
286
Septic Tank Systems Repaired
101
Estimated Number of Septic Tank Systems
30,000
Sanitary Landfill Sites
1
Land Clearing Inert Debris Landfills
14
Construction and Demolition
1
Groundwater Usage
Existing Community Wells
63
Private Wells (Calculated)
63,000
Non-Community Wells
159
Citizens Dependent on Groundwater for Drinking Source (Calculated)
184,900
MPL Sites
724
Number of Sites Evaluated
255
Conatminated Drinking Water Wells detected in 1997 due to MPL Site
2