Page 1 of 2 Update: 4/9/07
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
HI & LO ESTATES - DERRY, NH
EPA # 0612140
VOLATILE ORGANIC CONTAMINANTS (b) (Units µg/L)
Analyte Result MCL Date Analyte Result MCL Date
1,1,1,2-Tetrachloroethane < 0.5 NR 12/4/06 Diisopropyl Ether (DIPE) < 0.5 NR 12/4/06
1,1,1-Trichloroethane < 0.5 200 12/4/06 Ethyl Tert-Butyl Ether (ETBE) < 0.5 NR 12/4/06
1,1,2,2-Tetrachloroethane < 0.5 NR 12/4/06 Ethylbenzene < 0.5 700 12/4/06
1,1,2-Trichloroethane < 0.5 5 12/4/06 Hexachlorobutadiene < 0.5 NR 12/4/06
1,1-Dichloroethane < 0.5 NR 12/4/06 Isopropylbenzene < 0.5 NR 12/4/06
1,1-Dichloroethane < 0.5 7 12/4/06 m/p - Xylenes < 0.5 NR 12/4/06
1,1-Dichloropropylene < 0.5 NR 12/4/06 Methyl ethyl ketone (MEK) 2-Butanone < 0.5 NR 12/4/06
1,2,3-Trichlorobenzene < 0.5 NR 12/4/06 Methylene chloride < 0.5 5 12/4/06
1,2,3-Trichloropropane < 0.5 NR 12/4/06 Methyl-t-butyl-ether (MtBE) < 0.5 13 12/4/06
1,2,4-Trichlorobenzene < 0.5 70 12/4/06 Napthalene < 0.5 NR 12/4/06
1,2,4-Trimethylbenzene < 0.5 NR 12/4/06 n-Butylbenzene < 0.5 NR 12/4/06
1,2-Dibromo - 3- chloropropane < 0.5 0.2 12/4/06 Nitrobensene < 0.5 NR 12/4/06
1,2-Dibromoethane < 0.5 NR 12/4/06 n-Proplybenzene < 0.5 NR 12/4/06
1,2-Dichlorobenzene < 0.5 600 12/4/06 o-Chlorotoluene < 0.5 NR 12/4/06
1,2-Dichloroethane < 0.5 5 12/4/06 o-Xylene < 0.5 NR 12/4/06
1,2-Dichloropropane < 0.5 5 12/4/06 p-Chlorotoluene < 0.5 NR 12/4/06
1,3,5-Trimethylbenzene < 0.5 NR 12/4/06 sec Butylbenzene < 0.5 NR 12/4/06
1,3-Dichlorobenzene < 0.5 NR 12/4/06 Styrene < 0.5 100 12/4/06
1,3-Dichloropropane < 0.5 NR 12/4/06 Tert-Amyl Methyl Ether (TAME) < 0.5 NR 12/4/06
1,4-Dichlorobenzene < 0.5 75 12/4/06 Tert-Butyl Alcohol (TBA) < 0.5 NR 12/4/06
2,2-Dichloropropane < 0.5 NR 12/4/06 Tert-Butylbenzene < 0.5 NR 12/4/06
2-Hexanone < 0.5 NR 12/4/06 Tetrachloroethylene < 0.5 5 12/4/06
4 Methyl-2-Pentanone (MIBK) < 0.5 NR 12/4/06 Tetrachloromethane < 0.5 NR 12/4/06
4-Isopropyltoluene < 0.5 NR 12/4/06 Tetrahydrofuran < 0.5 NR 12/4/06
Acetone < 0.5 NR 12/4/06 Toluene < 0.5 1000 12/4/06
Benzene < 0.5 5 12/4/06 Total Xylenes < 0.5 10,000 12/4/06
Bromobenzene < 0.5 NR 12/4/06 Trans-1, 2-Dichloroethylene < 0.5 100 12/4/06
Bromochloromethane < 0.5 NR 12/4/06 Trans-1, 3-Dichloropropylene < 0.5 NR 12/4/06
Bromomethane < 0.5 NR 12/4/06 Trichloroethylene < 0.5 5 12/4/06
Carbon Disulfide < 0.5 NR 12/4/06 Trichlorofluromethane < 0.5 NR 12/4/06
Chlorobenzene < 0.5 100 12/4/06 Vinyl chloride < 0.5 2 12/4/06
Chloroethane < 0.5 NR 12/4/06 12/4/06
Chloromethane < 0.5 NR 12/4/06  TRIHALOMETHANES 
cis-1, 2-Dichloroethylene < 0.5 70 12/4/06 Bromodichloromethane  2.2 80 12/4/06
cis-1, 3-Dichloropropylene < 0.5 NR 12/4/06 Bromoform < 0.5 80 12/4/06
Dibromomethane < 0.5 NR 12/4/06 Dibromochloromethane 2.4 80 12/4/06
Dichlorodifluoromethane < 0.5 NR 12/4/06 Chloroform  1.4 80 12/4/06
Diethyl ether < 0.5 NR 12/4/06 Total Trihalomethanes  6 80 12/4/06
SYNTHETIC ORGANIC CONTAMINANTS (b) (Units µg/L)
2,4-D BDL 70 10/20/03 3-Hydorxycarbofuran BDL NR 10/20/03
Acenaphthylene BDL NR 10/20/03 Alachlor BDL 2 10/20/03
Aldicarb BDL NR 10/20/03 Aldicarb Sulfone BDL NR 10/20/03
Aldicarb Sulfoxide BDL NR 10/20/03 Aldrin BDL NR 10/20/03
Anthracene BDL NR 10/20/03 Atrazine BDL 3 10/20/03
Benzo (A) anthracene BDL NR 10/20/03 Benzo (A) pyrene BDL NR 10/20/03
Benzo (B) fluoranthene BDL NR 10/20/03 Benzo (G,H,I) perylene BDL NR 10/20/03
Benzo (K) fluoranthene BDL NR 10/20/03 Butachlor BDL NR 10/20/03
Butylbenzylphthalate BDL NR 10/20/03 Carbaryl BDL NR 10/20/03
Carbofuran BDL 40 10/20/03 Chlordane BDL 2 10/20/03
Chrysene BDL NR 10/20/03 Di-n-butylphthalate BDL NR 10/20/03
Dibenz (A,H) anthracene BDL NR 10/20/03 Dibromochloropropane BDL NR 10/20/03
Dicamba BDL NR 10/20/03 Dieldrin BDL NR 10/20/03
Diethylphthalate BDL NR 10/20/03 Dimethylphthalate BDL NR 10/20/03
Dinoseb BDL 7 10/20/03 Endrin BDL 2 10/20/03
Ethylene dibromide BDL 0.05 10/20/03 Fluorene BDL NR 10/20/03
Glyphosate BDL 700 10/20/03 Heptachlor BDL 0.4 10/20/03
Heptachlor Epoxide BDL 0.2 10/20/03 Hexachlorobenzene BDL 1 10/20/03
Hexachlorocyclopentadiene BDL 50 10/20/03 Indeno (1,2,3-CD) pyrene BDL NR 10/20/03
Isophorone BDL NR 10/20/03 Lindane BDL 0.2 10/20/03
Methomyl BDL NR 10/20/03 Methoxychlor BDL 40 10/20/03
Metholachlor BDL NR 10/20/03 Metribuzin BDL NR 10/20/03
Oxamyl BDL 200 10/20/03 Pentachlorophenol BDL 1 10/20/03
Phenanthrene BDL NR 10/20/03 Picloram BDL 500 10/20/03
Propachlor BDL NR 10/20/03 Pyrene BDL NR 10/20/03
Silvex BDL 50 10/20/03 Simazine BDL 4 10/20/03
Toxaphene BDL 3 10/20/03 bis (2-ethylhexyl) adipate BDL NR 10/20/03
bis (2-Ethylhexyl) phthalate BDL 6 10/20/03
Page 2 of 2
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
HI & LO ESTATES - DERRY, NH
EPA # 0612140
INORGANIC CONTAMINANTS (b) SECONDARY CONTAMINANTS (b) - AESTHETIC
Analyte Results MCL Date Analyte Results SMCL Date
Antimony (µg/L) <2 6 12/4/06 Chloride (mg/L) 89 250 12/4/06
Arsenic (µg/L) <2 10 12/4/06 Fluoride (mg/L) 0.48 2 12/4/06
Barium (mg/L) 0.038 2 12/4/06 Iron (µg/L) 15 300 12/4/06
Beryllium (µg/L) < 2 4 12/4/06 Manganese (µg/L) 63 50 12/4/06
Cadmium (µg/L) <2 5 12/4/06 pH (Units) 7.5 6.5 – 8.5 12/4/06
Chromium (µg/L) <10 100 12/4/06 Silver (µg/L) <4 100 12/4/06
Cyanide (µg/L) <10.0 200 12/4/06 Sodium (mg/L) 22.1 100-250 12/4/06
Fluoride (mg/L) 0.48 4 12/4/06 Sulfate (mg/L) 43.9 250 12/4/06
Mercury (µg/L) <0.2 2 12/4/06 Zinc (mg/L) 0.02 5 12/4/06
Nickel (µg/L) <10 100 12/4/06
Nitrate-N (mg/L) <0.20 10 12/4/06 RADIOLOGICAL CONTAMINANTS (b)
Nitrite-N (mg/L) < 0.05 1 10/28/04 Analyte (Units) Results MCL Date
Selenium (µg/L) <5 50 12/4/06 Adjusted Gross Alpha (pCi/L) <3.0 15 12/4/06
Thallium (µg/L) < 1 2 12/4/06 Radon Gas (pCi/L) 2950 None 4/9/07
Radium-226 (pCi/L) 0.1 5 12/4/06
FIRST DRAW LEAD AND COPPER (a) Radium-228 (pCi/L) <0.5 5 12/4/06
Analyte Results AL Date Uranium (µg/L) <1.0 30 12/4/06
Lead (µg/L) 90th percentile sample 10 15 7/18/06
Copper (mg/L) 90th percentile sample 0.5 1.3 7/18/06 UNREGULATED CONTAMINANTS (b)
Analyte (Units) Results Date
Microbiological Contaminants (a) Results MCL Date Alkalinity as CaCO3 (mg/L) 109 12/4/06
Total Coliform Absent < 1/month Monthly Specific Conductance (umhos/cm2) 547 12/4/06
E. coli Absent Absent Monthly Total Hardness as CaCO3 (mg/L) 196 12/4/06
Chlorine Residual (mg/L) <0.1-1.5 <4.0 Weekly Magnesium (mg/L) 4.5 12/4/06
Orthophosphate (mg/L)  average 1.59 Monthly
     
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 BDL Below Detection Level
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.