MANHASSET-LAKEVILLE WATER DISTRICT 2005 TABLE OF DETECTED CONTAMINANTS
PARAMETER	Violation Yes/No	Level Detected (Range)	Level Detected (Average)	Date of Highest Detection	Regulatory Limit (MCL)	Regulatory Goal (MCLG)	Unit of Measure	Likely Source of Contaminant
PHYSICAL
pH	No	6.7 - 7.5	7.2	14-Nov	6.5 - 8.5	N/A	N/A
Alkalinity	No	9.6-66	38	14-Nov	N/A	N/A	mg/l	Naturally present in the environment
Total Dissolved Solids	No	130-240	185	14-Nov	500	N/A	mg/l
Total Hardness	No	72-93	83	14-Nov	N/A	N/A	mg/l
INORGANIC CONTAMINANTS
Calcium	No	7.1 - 13.5	12.6	14-Nov	N/A	N/A	mg/l
Chloride	No	4.1 - 34.8	22.0	14-Nov	250	250	mg/l	Erosion of natural deposits
Flouride	No	ND - 0.1	0.06	16-May	2.2
Iron	No	ND - 23	13.3	16-May	300	300	ug/l
Sulfate	No	5.5 - 15.3	13.40	14-Nov	250	N/A	mg/l
Magnesium	No	3.8 - 10.5	7.7	14-Nov	N/A	N/A	mg/l
Sodium	No	9.7 - 38.7	18.0	14-Nov	*	*	mg/l
Nitrate	No	0.8 - 7.3	3.7	14-Nov	10	10	mg/l	Leaching from septic tanks
TRIHALOMETHANES
Bromoform	No	ND - 1.4	0.54	12 - Sep	50	N/A	ug/l	Disinfection byproduct
LEAD & COPPER
Lead	No	ND - 16	4**	13-Jul-05	AL = 15	0	mg/l	Corrosion of household plumbing
Copper	No	ND - .45	0.14***	1-Jun-05	AL = 1.3	1.3	mg/l
* Water containing more than 20 mg/l of sodium should not be used for drinking by people on severely restricted sodium diets. Water containing more than 270 mg/l of sodium should not be used for drinking by people on moderately restricted sodium diets.
**  The level presented represents the 90th percentile of the 30 sites tested.  The 90th percentile is equal to or greater than 90% of the copper values detected in the water system.
CONTAMINANTS TESTED FOR BUT NOT DETECTED   1,1,1,2-Tetrachloroethane 2-Chlorotoluene Isopropylbenzene 2,4-D   Diquat     Antimony 1,1,1-Trichloroethane 4-Chlorotoluene m,p-Xylene   3-Hydroxycarbofuran Endothall     Arsenic 1,1,2,2-Tetrachloroethane 4-Isopropyltoluene Methyl tert-butyl ether Alachlor   Endrin     Barium 1,1,2-Trichloroethane Benzene   Methylene chloride Aldicarb   Glyphosate     Beryllium 1,1-Dichloroethane Bromobenzene n-Butylbenzene   Aldicarb sulfone   Heptachlor     Cadmium 1,1-Dichloroethene Bromochloromethane n-Propylbenzene   Aldicarb sulfoxide   Heptachlor epoxide   Chromium 1,1-Dichloropropene Bromodichloromethane o-Xylene   Aldrin   Hexachlorobenzene   Copper 1,2,3-Trichlorobenzene Bromomethane sec-Butylbenzene Atrazine   Hexachlorocyclopentadiene Lead 1,2,3-Trichloropropane Carbon tetrachloride Styrene   Benzo(a)pyrene   Lindane     Manganese 1,2,4-Trichlorobenzene Chlorobenzene tert-Butylbenzene bis(2-Ethylhexyl)adipate Methomyl     MBAS 1,2,4-Trimethylbenzene Chloroethane   Tetrachloroethene Bis(2-ethylhexyl)phthalate Methoxychlor     Mercury 1,2-Dichlorobenzene Chloroform   Toluene   Butachlor   Metolachlor     Nickel 1,2-Dichloroethane Chloromethane trans-1,2-Dichloroethene Carbaryl   Metribuzin     Nitrogen, 1,2-Dichloropropane cis-1,2-Dichloroethene trans-1,3-Dichloropropene Carbofuran   Oxamyl     Selenium 1,3,5-Trimethylbenzene cis-1,3-Dichloropropene Trichloroethene   Chlordane   Pentachlorophenol   Silver 1,3-Dichlorobenzene Dibromochloromethane Trichlorofluoromethane Dalapon   Picloram     Thallium 1,3-Dichloropropane Dibromomethane Vinyl chloride   Dicamba   Propachlor     Zinc 1,4-Dichlorobenzene Ethylbenzene   1,2-Dibromo-3-chloropropane Dieldrin   Simazine       Dichlorodifluoromethane Free Cyanide   1,2-Dibromoethane Dinoseb   Total PCBs       2,2-Dichloropropane Hexachlorobutadiene 2,4,5-TP (Silvex)   Dioxin   Toxaphene