Page 1 of 2 Update: 4/26/07
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
FARMSTEAD ACRES - DERRY, NH
EPA # 0612110
VOLATILE ORGANIC CONTAMINANTS (b) (Units µg/L)
Analyte Result MCL Date Analyte Result MCL Date
1,1,1,2-Tetrachloroethane < 0.5 NR 10/20/05 Diisopropyl Ether (DIPE) < 0.5 NR 10/20/05
1,1,1-Trichloroethane < 0.5 200 10/20/05 Ethyl Tert-Butyl Ether (ETBE) < 0.5 NR 10/20/05
1,1,2,2-Tetrachloroethane < 0.5 NR 10/20/05 Ethylbenzene < 0.5 700 10/20/05
1,1,2-Trichloroethane < 0.5 5 10/20/05 Hexachlorobutadiene < 0.5 NR 10/20/05
1,1-Dichloroethane < 0.5 NR 10/20/05 Isopropylbenzene < 0.5 NR 10/20/05
1,1-Dichloroethane < 0.5 7 10/20/05 m/p - Xylenes < 0.5 NR 10/20/05
1,1-Dichloropropylene < 0.5 NR 10/20/05 Methyl ethyl ketone (MEK) 2-Butanone < 0.5 NR 10/20/05
1,2,3-Trichlorobenzene < 0.5 NR 10/20/05 Methylene chloride < 0.5 5 10/20/05
1,2,3-Trichloropropane < 0.5 NR 10/20/05 Methyl-t-butyl-ether (MtBE) < 0.5 13 10/20/05
1,2,4-Trichlorobenzene < 0.5 70 10/20/05 Napthalene < 0.5 NR 10/20/05
1,2,4-Trimethylbenzene < 0.5 NR 10/20/05 n-Butylbenzene < 0.5 NR 10/20/05
1,2-Dibromo - 3- chloropropane < 0.5 0.2 10/20/05 Nitrobensene < 0.5 NR 10/20/05
1,2-Dibromoethane < 0.5 NR 10/20/05 n-Proplybenzene < 0.5 NR 10/20/05
1,2-Dichlorobenzene < 0.5 600 10/20/05 o-Chlorotoluene < 0.5 NR 10/20/05
1,2-Dichloroethane < 0.5 5 10/20/05 o-Xylene < 0.5 NR 10/20/05
1,2-Dichloropropane < 0.5 5 10/20/05 p-Chlorotoluene < 0.5 NR 10/20/05
1,3,5-Trimethylbenzene < 0.5 NR 10/20/05 sec Butylbenzene < 0.5 NR 10/20/05
1,3-Dichlorobenzene < 0.5 NR 10/20/05 Styrene < 0.5 100 10/20/05
1,3-Dichloropropane < 0.5 NR 10/20/05 Tert-Amyl Methyl Ether (TAME) < 0.5 NR 10/20/05
1,4-Dichlorobenzene < 0.5 75 10/20/05 Tert-Butyl Alcohol (TBA) < 0.5 NR 10/20/05
2,2-Dichloropropane < 0.5 NR 10/20/05 Tert-Butylbenzene < 0.5 NR 10/20/05
2-Hexanone < 0.5 NR 10/20/05 Tetrachloroethylene < 0.5 5 10/20/05
4 Methyl-2-Pentanone (MIBK) < 0.5 NR 10/20/05 Tetrachloromethane < 0.5 NR 10/20/05
4-Isopropyltoluene < 0.5 NR 10/20/05 Tetrahydrofuran < 0.5 NR 10/20/05
Acetone < 0.5 NR 10/20/05 Toluene < 0.5 1000 10/20/05
Benzene < 0.5 5 10/20/05 Total Xylenes < 0.5 10,000 10/20/05
Bromobenzene < 0.5 NR 10/20/05 Trans-1, 2-Dichloroethylene < 0.5 100 10/20/05
Bromochloromethane < 0.5 NR 10/20/05 Trans-1, 3-Dichloropropylene < 0.5 NR 10/20/05
Bromomethane < 0.5 NR 10/20/05 Trichloroethylene < 0.5 5 10/20/05
Carbon Disulfide < 0.5 NR 10/20/05 Trichlorofluromethane < 0.5 NR 10/20/05
Chlorobenzene < 0.5 100 10/20/05 Vinyl chloride < 0.5 2 10/20/05
Chloroethane < 0.5 NR 10/20/05
Chloromethane < 0.5 NR 10/20/05  TRIHALOMETHANES 
cis-1, 2-Dichloroethylene < 0.5 70 10/20/05 Bromodichloromethane  < 0.5 80 10/20/05
cis-1, 3-Dichloropropylene < 0.5 NR 10/20/05 Bromoform < 0.5 80 10/20/05
Dibromomethane < 0.5 NR 10/20/05 Dibromochloromethane < 0.5 80 10/20/05
Dichlorodifluoromethane < 0.5 NR 10/20/05 Chloroform  < 0.5 80 10/20/05
Diethyl ether < 0.5 NR 10/20/05 Total Trihalomethanes  < 0.5 80 10/20/05
SYNTHETIC ORGANIC CONTAMINANTS (b) (Units µg/L)
2,4,5-TP (Silvex)  BDL 50 12/13/06 Dinoseb BDL 7 12/13/06
2,4-D BDL 70 12/13/06 Endrin BDL 2 12/13/06
3-Hydorxycarbofuran BDL NR 12/13/06 Ethylene dibromide (EDB) BDL 0.05 12/13/06
Alachlor BDL 2 12/13/06 Fluorene BDL NR 12/13/06
Aldicarb BDL NR 12/13/06 Glyphosate BDL 700 12/13/06
Aldicarb Sulfone BDL NR 12/13/06 Heptachlor BDL 0.4 12/13/06
Aldicarb Sulfoxide BDL NR 12/13/06 Heptachlor Epoxide BDL 0.2 12/13/06
Aldrin BDL NR 12/13/06 Hexachlorobenzene BDL 1 12/13/06
Atrazine BDL 3 12/13/06 Hexachlorocyclopentadiene BDL 50 12/13/06
Benzo (A) pyrene BDL NR 12/13/06 Lindane BDL 0.2 12/13/06
Butachlor BDL NR 12/13/06 Metholachlor BDL NR 12/13/06
Carbaryl BDL NR 12/13/06 Methomyl BDL NR 12/13/06
Carbofuran BDL 40 12/13/06 Methoxychlor BDL 40 12/13/06
Chlordane BDL 2 12/13/06 Metribuzin BDL NR 12/13/06
Di (2-ethylhexyl) adipate BDL NR 12/13/06 Oxamyl (Vydate) BDL 200 12/13/06
Di (2-Ethylhexyl) phthalate BDL 6 12/13/06 Pentachlorophenol BDL 1 12/13/06
Dibromochloropropane (DBCP) BDL NR 12/13/06 Picloram BDL 500 12/13/06
Dicamba BDL NR 12/13/06 Propachlor BDL NR 12/13/06
Dieldrin BDL NR 12/13/06 Simazine BDL 4 12/13/06
Toxaphene BDL 3 12/13/06
Page 2 of 2
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
FARMSTEAD ACRES - DERRY, NH
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INORGANIC CONTAMINANTS (b) SECONDARY CONTAMINANTS (b) - AESTHETIC
Analyte Results MCL Date Analyte Results SMCL Date
Antimony (µg/L) < 2 6 12/13/06 Chloride (mg/L) 62 250 12/13/06
Arsenic (µg/L) 5 10 4/26/07 Fluoride (mg/L) 0.63 2 12/13/06
Barium (mg/L) 0.012 2 12/13/06 Iron (µg/L) 45 300 12/13/06
Beryllium (µg/L) < 2 4 12/13/06 Manganese (µg/L) 78 50 12/13/06
Cadmium (µg/L) < 1 5 12/13/06 pH (Units) 7.83 6.5 – 8.5 12/13/06
Chromium (µg/L) <10 100 12/13/06 Silver (µg/L) <4 100 12/13/06
Copper (mg/L)  < 0.1 AL=1.3 12/13/06 Sodium (mg/L) 19.4 100-250 12/13/06
Cyanide (µg/L) <10 200 12/13/06 Sulfate (mg/L) 30.8 250 12/13/06
Fluoride (mg/L) 0.63 4 12/13/06 Zinc (mg/L) <0.01 5 12/13/06
Lead (µg/L) < 5 AL=15 12/13/06        
Mercury (µg/L) <0.2 2 12/13/06
Nickel (µg/L) <10 100 12/13/06
Nitrate-N (mg/L) < 0.2 10 12/13/06
Nitrite-N (mg/L) < 0.05 1 12/13/06
Selenium (µg/L) < 5 50 12/13/06
Thallium (µg/L) < 1 2 12/13/06
FIRST DRAW LEAD AND COPPER (a) RADIOLOGICAL CONTAMINANTS (b)
Analyte Results AL Date Analyte (Units) Results MCL Date
Lead (µg/L) 90th percentile sample 17 15 4/25/06 Adjusted Gross Alpha (pCi/L) 1.8 15 10/20/05
Copper (mg/L) 90th percentile sample 0.343 1.3 4/25/06 Radon Gas (pCi/L) 1640 None 4/10/07
Radium-226 (pCi/L) 1.2 5 10/20/05
Microbiological Contaminants (a) Results MCL Date Radium-228 (pCi/L) 1.1 5 10/20/05
Total Coliform Absent < 1/month Monthly Uranium (ug/L) 1.8 30 10/20/05
E. coli Absent Absent Monthly
Chlorine Residual (mg/L) 0.2-0.6 <4.0 Weekly
UNREGULATED CONTAMINANTS (b)
Analyte (Units) Results Date Analyte (Units) Results Date
Alkalinity as CaCO3 (mg/L) 77.4 12/13/06 Specific Conductance (umhos/cm2) 436 12/13/06
Calcium (mg/L) 51 12/13/06 Total Hardness as CaCO3 (mg/L) 148 12/13/06
Chlorine Residual (mg/L) 0.2-0.5 Weekly Orthophosphate (mg/L)  average 2.33 Monthly
Hydrogen Sulfate (mg/L) < 0.02 12/13/06 Magnesium (mg/L) 5.1 12/13/06
KEY TO ABBREVIATIONS
Text Box: AL Action Level - The concentration of a contaminant which, if exceeded triggers treatment of or other requirements which a water system must follow. MCL Maximum Contaminant Level - The highest level of a contaminant that is allowed in drinking water. SMCL Secondary Maximum Contaminant Level - The highest level of a contaminant that affects the aesthetic characteristics ( taste, odor, or color) of drinking water. NR Not Regulated - Contaminants test for but not regulated by the State or EPA. (a) samples taken from the distribution system. (b) samples taken from the distribution entry point. mg/L milligrams per Liter or parts per million. µg/L micrograms per Liter or parts per billion. pCi/L picocuries per Liter (measure of radioactivity) N/A Not Applicable nd not detected
Text Box: If you have any questions about this report, or about your water quality, please call Gary Tetley, Water Quality Manager, at 1-603-913-2378 or 1-800-553-5191. Additional information about contaminants and their potential health effects can be obtained by calling the Environmental Protection Agency's Safe Drinking Water Hotline 1-800-426-4791.