Health Related Standards

Heights Water

Water Quality Report

2010

Water Testing Results

HEIGHTS WATER

System ID# 32300L

172= 32 Vashon Highway SW (office)

P.O= . Box 820, Vashon, WA 98070

(20= 6) 463-0014 - Office/Information

(20= 6) 529-7864 - Emergency Phone

Prepared April= 2011

Heights Water’s mission is to provide our customers with = safe and reliable drinking water. = This annual report is intended to provide current, factual information about your drinking water.

We are pleased = to report that our drinking water is safe and meets= all Federal and State requirements.

Drinking Water Sources: Heights Water draws and treats your drinking water from wells. The wells are located on the north= end of the island.

Heights Water routinely monitors for constituents in your drinking water according to Fed= eral and State laws. This report s= hows the results of testing for the period of January 1 through December 31, 201= 0.

All drinking water, including bot= tled water, may reasonably be expected to contain at least small amounts of some= contaminants. The presence of contaminants does = not necessarily indicate that water poses a health risk. More information about contaminant= s and potential health effects can be obtained by calling the EPA’s Safe Drinking Water Hotline (800-426-4791).

Immuno-compromised persons - Some people may be m= ore vulnerable to contaminants in drinking water than the general population. Immuno= -compromised persons such as persons with cancer undergoing chemotherapy, persons who ha= ve undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These people shou= ld seek advice about drinking water from their health care providers. EPA/CDC guidelines on appropriate = means to lessen the risk of infection by cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline (800-426-47= 91).

The sources of drinking water (both tap w= ater and bottled water) include rivers, lakes, streams, ponds, reservoirs, sprin= gs, and wells. As water travels o= ver the surface of the land or through the ground, it dissolves naturally-occur= ring minerals and, in some cases, radioactive material, and can pick up substanc= es resulting from the presence of animals or from human activity.

In order to ensure that tap water is safe to drink, the EPA prescribes regulations that limit the amount of certain contaminant= s in water provided by public water systems.

Food and Drug Administration regulations establish limits for contaminants in bottled water, which must provide the = same protection for public health.

Contaminants that may be present in source water include:

· = Microbial contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.=

· = Inorganic contaminants, such as sa= lts and metals, which can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming. <= /p>

· = Pesticides and herbicides, which m= ay come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.

· = Organic chemical contaminants, including synthetic and volatile organic chemicals, which are byproducts of industrial processes and petroleum production, and can = also come from gas stations, urban stormwater runoff= , and septic systems.

· = Radioactive contaminants, which ca= n be naturally-occurring or be the result of oil and gas production and mining activities.

Nitrate: Nitrate in drinking water at levels above 10 ppm is a heal= th risk for infants of less than six months of age. High nitrate levels in drinking water can cause blue baby syndrome. Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity. If = you are caring for an infant, you should ask for advice from your health care provider.

Arsenic: While your drinking water meets EPA’s standard for arsenic, it does contain low levels of arsenic. EPA’s standard balances the current understanding = of arsenic’s possible health effects against the cost of removing arsenic from drinking water. EPA continues to research the health effects of low le= vels of arsenic which is a mineral know to cause cancer in humans at high concen= trations and is linked to other health effects such as skin damage and circulatory problems.

The water quality information presented in the table is from the most recent te= sts performed in accordance with the regulations. If you would like to learn about your wat= er system and water quality, please contact our office.

The Heights Water Board of Trustees meets monthly. Please contact the business office to verify date and time.

There is a source water protection plan available from our office that provides more information such as potential sources of contamination.

If you have any questions about this report or your water quality, please call= the Heights Water office at (206) 463-0014 or visit us at www.heightswater.org.=

CONSTITUENTS	UNIT	LIMIT (MCL)	SPRINGS SO 9,10 Combined-SO 8	WELL FIELD= SO 2,3,4 Combined-SO 5=

METALS
Antimony-Sb	mg/l	0.006	ND	ND
Arsenic-As	mg/l	0.01	0.004	0.006
Barium-Ba	mg/l	2.0	0.006	ND
Beryllium-Be	mg/l	0.004	ND	ND
Cadmium-Cd	mg/l	0.005	ND	ND
Chromium-Cr	mg/l	0.10	ND	ND
Copper-Cu	mg/l	1.3	ND	ND
Iron-Fe	mg/l	0.30	ND	ND
Lead-Pb	mg/l	0.015	ND	ND
Manganese-Mn=	mg/l	0.05	ND	0.01
Mercury-Hg	mg/l	0.002	ND	ND
Nickel-Ni	mg/l	0.10	ND	ND
Selenium-Se	mg/l	0.05	ND	ND
Silver-Ag	mg/l	0.05	ND	ND
Thallium-Tl<= /span>	mg/l	0.002	ND	ND
Zinc-Zn	mg/l	5.0	0.011	ND

ANIONS & CATIO= NS
Calcium-Ca	mg/l	-	21	23
Chloride-Cl<= /span>	mg/l	250	4.8	ND
Cyanide-Cn	mg/l	0.20	ND	ND
Fluoride-F	mg/l	4.0	ND	ND
Hardness-CaCO₃	mg/l	-	102	110
Magnesium-Mg	mg/l	-	13	12
Nitrate-NO₃	mg/l	10	0.89	1.25
Nitrite-NO₂	mg/l	1.0	ND	ND
Sodium-Na	mg/l	-	8.26	6.8
Sulfate-SO₄	mg/l	250	15	ND

PHYSICAL CHARACTERISTICS
Color	Color	15	ND	ND
Turbidity	NTU	1.0	BD	0.3
Conductivity	μmhos/c	700	247	230

RADIONUCLIDES
Radium 228	pCi/l	5	ND	0.3
					<= /o:p>
ASBESTOS
Results From 5/1999	MFL	7	&nbs= p; &nbs= p; &= nbsp; <0.20
			<= /o:p>

MICROBIOLOGICAL	Total Results Indicating Contamination
= Total Coliform Bacteria	0
= Fecal Coliform Bacteria	0
= E.Coli	0

CONSTITUENTS=	Unit	Limit (MCL)	Springs SO 9,10 Combined-SO 8	Well Field SO 2,3,4 Combined-SO 5

= VOLATILE ORGANIC CHEMICALS
= Vinyl Chloride	μg/l	2.0	ND	ND
= 1,1-Dichloroethylene	μg/l	7.0	ND	ND
= 1,1,1-Trichloroethane	μg/l	200	ND	ND
= Chloroform	µg/l	-	ND	ND
= Bromodichloromethane	µg/l	-	2.53	ND
= Carbon Tetrachloride	µg/l	5.0	ND	ND
= Benzene	μg/l	5.0	ND	ND
= 1,2-Dichloroethane	μg/l	5.0	ND	ND
= Trichloroethylene	μg/l	5.0	ND	ND
= 1,4-Dichlorobenzene	μg/l	75	ND	ND
= Dichloromethane	μg/l	5.0	ND	ND
Trans-1,2-Dichloroethylene	μg/l	100	ND	ND
= Cis-1,2-Dichloroethylene	μg/l	70	ND	ND
= 1,2-Dichloropropane	μg/l	5.0	ND	ND
= Toluene	μg/l	1000	ND	ND
= 1,1,2-Trichloroethane	μg/l	5.0	ND	ND
= Tetrachloroethylene	μg/l	5.0	ND	ND
= Chlorobenzene	μg/l	100	ND	ND
= Ethylbenzene	μg/l	700	ND	ND
= Styrene	μg/l	100	ND	ND
= 1,2-Dichlorobenzene	μg/l	600	5.55	5.65
= 1,2,4-Trichlorobenzene	μg/l	70	ND	ND
= Total Xylenes	μg/l	10000	ND	ND
= M/p-Xylenes	μg/l	-	ND	ND
= o-Xylene	μg/l	-	ND	ND

= ABBREVIATIONS & UNITS
= mg/l	= Milligrams per liter - same as parts per mil= lion or ppm
MCL	= Maximum Contaminant Level – = The highest level of a contaminant that is allowed in drinking water. MCLs are se= t as close to the MCLGs as feasible using the best available treatment technol= ogy.
MCLG	= Maximum Contaminant Level Goal – The level of a contaminant in drinking water below whi= ch there is no known or expected risk to health. MGLGs allow for a margin of safet= y.
MFL	= Million fibers per liter
NA	= Not Available
ND	= Not Detected
NTU	= Nephelometric Turbidity Units
PCi/L	= Picocuries per liter
SO	= Water Source Number
μg/l	= Micrograms per liter
μmhos/cm	= Micromhos per centimeter

For a complete list of all constituents tested please call Heights Water at (206) 463-0014.

CONSTITUENTS

UNIT

LIMIT

SPRINGS

WELL FIELD=

METALS

ANIONS & CATIO= NS

PHYSICAL CHARACTERISTICS

RADIONUCLIDES

ASBESTOS

MICROBIOLOGICAL

=

VOLATILE ORGANIC CHEMICALS

=

ABBREVIATIONS & UNITS