Contaminant and Unit of Measurement	Dates of sampling (mo./yr.)	MCL Violation Y/N	Level Detected	Range of Results	MCLG	MCL	Likely Source of Contamination
Radiological Contaminants
Alpha Emitters (pCi/L)	09/09	N	2.8	N/A	0	15	Erosion of natural deposits
Contaminant and Unit of Measurement	Dates of sampling (mo./yr.)	MCL Violation Y/N	Level Detected	Range of Results	MCLG	MCL	Likely Source of Contamination
Inorganic Contaminants
Barium (ppm)	09/09	N	0.0064	N/A	2	2	Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Fluoride (ppm)	09/09	N	0.017	N/A	4	4	Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at optimum levels between 0.7 and 1.2 ppm
Nitrate (as Nitrogen) (ppm)	09/09	N	0.064	N/A	10	10	Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sodium (ppm)	09/09	N	9.9	N/A	N/A	160	Salt water intrusion, leaching from soil
Stage 1 Disinfectants and Disinfection By-Products
For bromate, chloramines, or chlorine, the level is the highest running annual average (RAA, computed quarterly, of monthly averages of all samples collect. For haloacetic acids or TTHM, the level detected is the highest RAA, computed quarterly, of quarterly averages of all samples collected if the system is monitoring quarterly or is the average of all samples taken during the year if the system monitors less frequently than quarterly. Range of Results is the range of individual sample results (lowest to highest) for all monitoring locations, including Initial Distribution System Evaluation (IDSE) results as well as Stage 1 compliance results.
Contaminant and Unit of Measurement	Dates of sampling (mo./yr.)	MCL Violation Y/N	Level Detected	Range of Results	MCLG or MRDLG	MCL or MRDL	Likely Source of Contamination
Chlorine (ppm)	01-12/2009	N	1.16	0.2-2.1	MRDLG = 4	MRDL = 4	Water additive used to control microbes
Haloacetic Acids (five) (HAA5) (ppb)	03/09-12/09	N	27.9	12-27.3	NA	MCL = 60	By-product of drinking water disinfection
TTHM [Total trihalomethanes] (ppb)	03/09-12/09	N	68.57	25-65.5	NA	MCL = 80	By-product of drinking water disinfection
Lead and Copper (Tap Water)
Contaminant and Unit of Measurement	Dates of sampling (mo./yr.)	AL Violation Y/N	90th Percentile Result	No. of sampling sites exceeding the AL	MCLG	AL (Action Level)	Likely Source of Contamination
Copper (tap water) (ppm)	12/2009	N	0.18	0	1.3	1.3	Corrosion of household plumbing systems: erosion of natural deposits; leaching from wood preservatives
Lead (tap water) (ppb)	12/2009	N	1.0	0	0	15	Corrosion of household plumbing systems, erosion of natural deposits
Secondary Contaminants
Contaminant and Unit of Measurement	Dates of sampling (mo./yr.)	MCL Violation Y/N	Highest Result	Range of Results	MCLG	MCL	Likely Source of Contamination
Maganese (ppm)	9/2009	Y*	0.11	N/A	N/A	0.05	Natural occurrence from soil leaching