2008

Contaminant	Range	MCL	MCLG	Most Likely Source
PRIMARY INORGANIC CONTAMINANTS
Antimony (mg/L)	0.001-0.003	0.006	0.006	Erosion of naturally occurring deposits
Arsenic (mg/L)	0.0007-0.00172	0.01	0.01	Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes
Barium (mg/L)	0.0 - 0.122	2	2	Erosion of naturally occurring deposits
Chromium (mg/L)	0.0 - 0.0048	0.1	0.1	Erosion of naturally occurring deposits
Cyanide (mg/L)	<0.01	0.2	0.2	Erosion of naturally occurring deposits
Fluoride(mg/L)	0.2-1.2	4	4	Erosion of naturally occurring deposits
Mercury (mg/L)	0.0-0.0022	0.002	0.002	Erosion of naturally occurring deposits
Thallium (mg/L)	0.0005 - 0.001	0.002	0.0005	Leaching from ore processing sites and discharges from electronics, glass and drug factories
Nitrate (mg/L)	0.08 - 4.2	10	10	Runoff from fertilizer, leaching from spetic tanks, sewage and naturally eroding deposits
Nitrite (mg/L)	<0.03	1	1	Runoff from fertilizer, leaching from spetic tanks, sewage and naturally eroding deposits
Total Nitrate & Nitrite (mg/L)	0.08 -0.44	10	10	Runoff from fertilizer, leaching from spetic tanks, sewage and naturally eroding deposits
Selenium (mg/L)	0.0 -0.0070	0.05	0.05	Erosion of naturally occurring deposits
Sodium (mg/L)	0.0 - 47.1	NE	NE	Erosion of naturally occurring deposits road de-icing
Sulfate (mg/L)	5.7 - 66	1000	NE	Erosion of naturally occurring deposits
Total Dissolved Solids (mg/L)	162 - 436	2000	NE	Soil runoff
Turbidity (NTU)	0.019- 0.52	0.3-5.0	TT	Soil runoff, MCL if 0.5 for surface water and 5.0 for groundwater
LEAD & COPPER (Tested at customer tap)
Copper (mg/L)	0.001 - 0.58	AL=1.3	1.3	Corrosion of household plumbing system
Lead (mg/L)	ND - 0.027	AL=0.015	0	Corrosion of household plumbing system
SECONDARY INORGANIC CONTAMINANTS
Aluminum (mg/L)	ND-0.11	0.05-0.2	NE	Erosion of naturally occurring deposits
Color (CU)	0-5	15	NE	Decaying naturally occurring organic material
Chloride (mg/L)	14.0 - 73.0	250	NE	Erosion of naturally occurring deposits, road de-icing
Iron (mg/L)	0.02- 0.30	0.3	NE	Erosion of naturally occurring deposits
Manganese (mg/L)	ND - 0.02	0.05	NE	Erosion of naturally occurring deposits
Odor (TON)	0-1	3	NE	Various sources
pH (units)	6.6-8.3	6.5-8.5	NE	Naturally occurring
Zinc (mg/L)	ND - 0.01	5	NE	Erosion of naturally occurring deposits
NONREGULATED CONTAMINANTS
Bicarbonate (mg/L)	112 - 320	UR	NE	Naturally occurring
Boron (mg/L)	0.05 -0.12	UR	NE	Erosion of naturally occurring deposits
Calcium (mg/L)	15-253	UR	NE	Erosion of naturally occurring deposits
Carbon Dioxide (mg/L)	100 - 150	UR	NE	Naturally occurring
Total Hardness (mg/L) as CaCo3	21-236	UR	NE	Erosion of naturally occurring deposits
Calcium Hardness (mg/L)	138-169	UR	NE	Erosion of naturally occurring deposits
Orthophosphates (mg/L)	0.0-0.05	UR	NE	Erosion of naturally occurring deposits
Phosphates (mg/L)	<0.05	UR	NE	Erosion of naturally occurring deposits
Potassium (mg/l)	2.0 - 3.2	UR	NE	Erosion of naturally occurring deposits, treatment
Strontium (mg/L)	0.26 - 0.40	UR	NE	Erosion of naturally occurring deposits
Alkalinity (mg/L)	15 - 166	UR	NE	Erosion of naturally occurring deposits
Magnesium (mg/L)	8.9 - 12.7	UR	NE	Erosion of naturally occurring deposits
Metheyene Blue Active (mg/L)	0.01 - 0.16	UR	NE	Naturally occurring
Silica (mg/L)	8.1 - 16.0	UR	NE	Erosion of naturally occurring deposits
TSS (mg/L)	5.0-8.0	UR	NE	Suspended material from soil runoff
MICROBIOLOGICAL
Total Coliform, colonies/100mL	110 monthly	>5%	0	MCL for monthly compliance. All repeated samples were negative; no violations were issued. Human and animal fecal waste, naturally occurring in environment.
RADIOLOGICAL
Alpha Emitters (pCi/L)	0.0 - 14.7	15 pCi/L	15 pCi/L	Erosion of naturally occurring deposits
Beta/Photon Emitters (pCi/L)	0.0 - 6.7	50	NE	Erosion of naturally occurring deposits Note: The MCL for beta particles is 4 mrem (millirems) per year. EPA considers 50 pCi/L to be the level of concern for beta particles
Radium 228 (pCi/L) Combined Radium 226 & 228	0.0 - 4.7 0.0 - 2.0	5 5	NE NE	Erosion of naturaly occurring deposits Erosion of naturally occurring deposits
Radon (pCi/L)	ND - 1749.5	NE	NE	Naturally occurring in soil
Strontium mg/L	0.26 -0.40	UR	NE	Erosion of naturally occurring deposits
Strontium 90 (pCi/L)	4.7 - 9	NA	NE	Decay of natural and man-made deposits
Tritium (pCi/L)	180 - 342	NA	NE	Decay of natural and man-made deposits
PESTICIDE/PBB/SOC CONTAMINANTS
Di(2-Ethylhexyl) Adipate (ug/L)	ND-1	400	400
VOLATILE ORGANIC CONTAMINANTS
Tetrachloroethylene (mg/L)	0.0008	0.005	0	Improper disposal of dry cleaning and other solvents
REGULATED ORGANICS
Bromodichloromethane (ppb)	0.0025	NE	NE	By-product of drinking water chlorination
Chlorodibromomethane (ppb)	0.0009	NE	NE	By-product of drinking water chlorination
Chloroform (ppb)	0.0049	NE	NE	By-product of drinking water chlorination
DISINFECTION-BY-PRODUCTS
Tthm's [total Trihalomethanes] (ug/L)	0.0 - 76.4	80	NE	By-product of drinking water chlorination
Chlorate (ug/L)	43-115	NE	NE	Treatment disinfection
Chlorite (ug/L)	39-283	NE	NE	Treatment disinfection
Total Haloacetic Acids (HAA5) (ug/L)	0.0 - 58.5	NE	NE	Treatment disinfection
Total Haloacetic Acids (HAA6) (ug/L)	0.0001 - 0.0329	NE	NE	Treatment disinfection
ORGANIC MATERIAL
TOC (mg/L)	0.6 - 3.6	UR	NE	Naturally occurring
UV-254 (1/cm)	0.011 - 0.048	UR	NE	Naturally occurring
DEFINITIONS FOR TABLE OF CONTAMINANTS: ND – Non-detects – Laboratory analysis indicates that the constituent is not present. PPM – Parts per million or milligrams per liter (mg/l) – one part per million corresponds to one minute in two years or a single penny in $10,000. PPB – Parts per billion or Micrograms per liter – one part per billion corresponds to one minute in 2,000 years, or a single penny in $10,000,000. PPT – Parts per trillion or nanograms per liter (nanograms/l) – one part per trillion corresponds to one minute in 2,000,000 years, or a single penny in $10,000,000,000. PCi/L – picocuries per liter – picocuries per liter is a measure of the radioactivity in water. NTU – Nephelometric Turbidity Unit – Nephelometric Turbidity Unite is a measure of the clarity of water. Turbidity in excess of 5 NTU is just noticeable to the average person. AL – Action Level – The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow. TT – Treatment Technique – A treatment technique is a required process intended to reduce the level of a contaminant in drinking water. MCL – Maximum Contaminant Level – The highest level of a contaminant that is allowed in drinking water. MCL’s are set as close to the MCLG’s as feasible using the best available treatment technology. MCLG – Maximum Contaminant Level Goal – The level of a contaminant in drinking water below which there is not known or expected risk to health. MCLG’s allow for a margin of safety. NE – Not established. UR – Unregulated. Range – Range of measurements based on testing of Sandy City sources. (a) The MCL for beta particles is 4 mrem (millirems) per year. EPA considers 50 pCi/L to be the level of concern for beta particles.

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10000 Centennial Pkwy Sandy, UT 84070