Vistancia Area Water System Water Quality Data

Aesthetics

Analyte	Units	Groundwater Concentrations		EPA Limit MCL	EPA Limit MCLG	Sample Date	Possible Sources
		Range	Average
Alkalinity	mg/L	210-231	221	NA	NA	2007	Naturally present
Calcium	mg/L	53-55	54	NA	NA	2007	Erosion of natural deposits
Hardness	Gr/gal	13.3	13.3	NA	NA	2007	Naturally present
Magnesium	mg/L	23*	23*	NA	NA	2007	Erosion of natural deposits
Manganese	mg/L	ND	ND	NA	0.05	2007	Naturally present
Sodium	mg/L	47*	47*	NA	NA	2007	Naturally present

*One sample collected, as required.

Copper and Lead

Analyte	Units	90th Percentile Reported	EPA Action Level (AL) mc/L	EPA Limit MCLG	Sample Date	Number of sites above AL	Possible Sources
Copper	mg/L	0.46	1.3	1.3	2007	Zero	Erosion of natural deposits Home plumbing systems
Lead	ug/L	3	15	0	2007	Zero	Erosion of natural deposits Home plumbing systems

Disinfection Byproducts

Analyte	Units	Overall Water System Concentrations		EPA Limit MCL	EPA Limit MCLG	Sample Date	Possible Sources
		Range	Highest Average
Total Trihalomethanes	ug/L	2.1-27	45*	80*	NA	2007	By-product of drinking water chlorination
Total Haloacetic Acids	ug/L	ND-4.5	12*	60*	NA	2007	By-product of drinking water chlorination

Inorganics

Analyte	Units	Groundwater Concentrations		EPA Limit MCL	EPA Limit MCLG	Sample Date	Possible Sources
		Range	Highest
Arsenic*	ug/L	ND-6	6	10	0	2007	Erosion of natural deposits
Barium	mg/L	0.04	0.04	2	2	2007	Erosion of natural deposits
Fluoride	mg/L	ND-0.36	0.36	4	NA	2007	Erosion of natural deposits
Nitrate	mg/L	ND-2.13	2.13	10	10	2007	Fertilizer runoff, erosion of natural deposits
Sulfate	mg/L	68.2	68.2	NA	NA	2007	Erosion of natural deposits

Due to the variation of the arsenic concentration, the City is providing the following statement as required by the US Environmental Protection Agency (EPA):

Arsenic Education Statement: While your drinking water meets EPA's standards for arsenic, it does contain low levels of arsenic. EPA's standard balances the current understanding of arsenic's possible health effects against the costs of removing arsenic from drinking water. EPA continues to research the health effects of low levels of arsenic, which is a mineral known to cause cancer in human at high concentrations and is linked to other health effects such as skin damage and circulatory problems.

Radiological

Analyte	Units	Groundwater Concentrations		EPA Limit MCL	EPA Limit MCLG	Sample Date	Possible Sources
		Range	Highest Average
Gross Alpha	pCi/L	ND-2.5	0.6	15	0	2007	Erosion of natural deposits
Uranium	ug/L	2.4-7.6	4.4	30	0	2007	Erosion of natural deposits
Radon	pCi/L	158-379	298	NA	NA	2007	Erosion of natural deposits

Radon is a radioactive gas that you cannot see, taste, or smell. It is found throughout the United States. Radon can move up through the ground and into a home through cracks and holes in the foundation. Radon can build up to high levels in all types of homes. Radon can also get into the indoor air when released from tap water when showering, washing dishes, and other household activities. Compared to Radon entering the home through soil, radon entering the home through tap water will in most cases be a small source of radon in indoor air. Radon is a known carcinogen. Breathing air containing radon can lead to lung cancer. Drinking water containing radon may also cause increased risk of stomach cancer. If you are concerned about radon in your home, test the air in your home. Testing is inexpensive and easy. For additional information, call your state radon program or call EPA's Radon Hotline (800-SOS-RADON).

Other Analysis

Analyte	Units	Water System Concentrations	EPA Limit MCL	EPA Limit MCLG	Sample Date	EPA Limit MRDL	Possible Sources
		Level Found
Total Coliforms	P/A	0	Two or more positive samples/month	0	2007	NA	Naturally Present
Chlorine Residual	mg/L	0.41-1.61	4	4	2007	4	Water additive used to control microbes

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