GROUNDWATER MONITORING DATA 1997 Average Ambient Values
Parameter	City Water	Creeks	Groundwater	Suggested Levels	Effects
Calcium	8.0 ppm	13.77 ppm	18.43 ppm	None	None
Copper	0.00 ppm	0.05 ppm	0.06 ppm	1 ppm	Taste; Staining of Porcelain
Iron	0.02 ppm	1.46 ppm	0.036 ppm	0.03 ppm	Taste; Staining of Laundry
Potassium	7.0 ppm	2.36 ppm	1.94 ppm	None	None
Magnesium	3.30 ppm	5.36 ppm	7.6 ppm	None	None
Manganese	0.0 ppm	0.10 ppm	0.07 ppm	0.05 ppm	Taste; Staining of Laundry
Sodium	7.0 ppm	11.99 ppm	10.46 ppm	20 ppm	Possible increase in blood pressure in susceptible individuals
Total Dissolved Solids	87.0 ppm	Not Measured	156.9 ppm	500 ppm	Taste; indicator of corrosivity (related to lead levels in water); possible relation between low hardness and cardiovascular disease; can damage plumbing and limit the effectiveness of soaps and detergents.
Nitrates	0.10 ppm	1.23 ppm	0.90 ppm	10 ppm	May result in Methemoglobinemia "blue-baby syndrome"
Alkalinity	24.0 ppm	67.9 ppm	86.1 ppm	None	None
pH	8.8	7.9	6.90	6.5-8.5	Corrosive