Page 1 of 2 Update 5/1/07
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
GLEN RIDGE - DERRY, NH
EPA # 0612070
VOLATILE ORGANIC CONTAMINANTS (b) (Units µg/L)
Analyte Result MCL Date Analyte Result MCL Date
1,1,1,2-Tetrachloroethane BDL NR 11/2/06 1,1,2-Trichloroethane BDL 5 11/2/06
1,1,2,2-Tetrachloroethane BDL NR 11/2/06 1,1-Dichloroethane BDL 7 11/2/06
1,1-Dichloroethane BDL NR 11/2/06 1,2,3-Trichlorobenzene BDL NR 11/2/06
1,1-Dichloropropene BDL NR 11/2/06 1,2,4-Trichlorobenzene BDL 70 11/2/06
1,2,3-Trichloropropane BDL NR 11/2/06 1,2-Dibromo - 3- chloropropane BDL 0.2 11/2/06
1,2,4-Trimethylbenzene BDL NR 11/2/06 1,2-Dichlorobenzene BDL 600 11/2/06
1,2-Dibromoethane BDL NR 11/2/06 1,2-Dichloropropane BDL 5 11/2/06
1,2-Dichloroethane BDL 5 11/2/06 1,3-Dichlorobenzene BDL NR 11/2/06
1,3,5-Trimethylbenzene BDL NR 11/2/06 1,4-Dichlorobenzene BDL 75 11/2/06
1,3-Dichloropropane BDL NR 11/2/06 2-Hexanone BDL NR 11/2/06
2,2-Dichloropropane BDL NR 11/2/06 Benzene BDL 5 11/2/06
Acetone BDL NR 11/2/06 Bromochloromethane BDL NR 11/2/06
Bromobenzene BDL NR 11/2/06 Carbon Disulfide BDL NR 11/2/06
Bromomethane BDL NR 11/2/06 Dibromomethane BDL NR 11/2/06
Chlorobenzene BDL 100 11/2/06 Diethyl ether BDL NR 11/2/06
Chloroethane BDL NR 11/2/06 Hexachlorobutadiene BDL NR 11/2/06
Chloromethane BDL NR 11/2/06 MIBK BDL NR 11/2/06
Dichlorodifluoromethane BDL NR 11/2/06 Methyl-t-butyl-ether BDL 13 11/2/06
Ethylbenzene BDL 700 11/2/06 Napthalene BDL NR 11/2/06
Isopropylbenzene BDL NR 11/2/06 Tetrachloroethene BDL 5 11/2/06
Methyl ethyl ketone BDL NR 11/2/06 Tetrahydrofuran BDL NR 11/2/06
Methylene chloride BDL 5 11/2/06 Trichloroethene BDL 5 11/2/06
Styrene BDL 100 11/2/06 Vinyl chloride BDL 2 11/2/06
Tetrachloromethane BDL NR 11/2/06 cis-1, 3-Dichloropropene BDL NR 11/2/06
Toluene BDL 1000 11/2/06 n-Butylbenzene BDL NR 11/2/06
Trichlorofluromethane BDL NR 11/2/06 o-Chlorotoluene BDL NR 11/2/06
cis-1, 2-Dichloroethene BDL 70 11/2/06 p-Chlorotoluene BDL NR 11/2/06
m/p - Xylenes BDL NR 11/2/06 sec Butylbenzene BDL NR 11/2/06
n-Proplybenzene BDL NR 11/2/06 trans-1, 2-Dichloroethene BDL 100 11/2/06
o-Xylene BDL NR 11/2/06  TRIHALOMETHANES 
p-Isopropyltoluene BDL NR 11/2/06 Bromodichloromethane BDL 100 11/2/06
tert-Butylbenzene BDL NR 11/2/06 Bromoform 0.5 100 11/2/06
trans-1, 3-Dichloropropene BDL NR 11/2/06 Dibromochloromethane  0.5 100 11/2/06
1,1,1-Trichloroethane BDL 200 11/2/06 Chloroform  0.5 100 11/2/06
Total Trihalomethanes  1.5 100 11/2/06
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
GLEN RIDGE - DERRY, NH
EPA # 0612070
INORGANIC CONTAMINANTS (b) SECONDARY CONTAMINANTS (b) - AESTHETIC
Analyte Results MCL Date Analyte Results SMCL Date
Antimony (µg/L) < 2 6 11/2/06 Chloride (mg/L) 58 250 11/2/06
Arsenic (µg/L) <2 10 11/2/06 Fluoride (mg/L) 0.25 2 11/2/06
Barium (mg/L) <0.01 2 11/2/06 Iron (µg/L) 32 300 11/2/06
Beryllium (µg/L) < 2 4 11/2/06 Manganese (µg/L) 13 50 11/2/06
Cadmium (µg/L) <2 5 11/2/06 pH (Units) 7.42 6.5 – 8.5 11/2/06
Chromium (µg/L) <10 100 11/2/06 Silver (µg/L) <4 100 11/2/06
Cyanide (µg/L) <10 200 11/2/06 Sodium (mg/L) 20.3 100-250 11/2/06
Fluoride (mg/L) 0.25 4 11/2/06 Sulfate (mg/L) 25.1 250 11/2/06
Mercury (µg/L) <0.20 2 11/2/06 Zinc (mg/L) 0.016 5 11/2/06
Nickel (µg/L) <10 100 11/2/06
Nitrate-N (mg/L) 0.52 10 11/2/06 RADIOLOGICAL CONTAMINANTS (b)
Nitrite-N (mg/L) < 0.05 1 10/28/04 Analyte (Units) Results MCL Date
Selenium (µg/L) < 5 50 11/2/06 Adjusted Gross Alpha (pCi/L) 17 15 10/28/04
Thallium (µg/L) < 1 2 11/2/06 Radon Gas (pCi/L) 7820 None 6/6/07
Radium 226 (pCi/L) 2.3 5 10/28/04
Radium 228 (pCi/L) 0.2 5 10/28/04
FIRST DRAW LEAD AND COPPER (a) Uranium (ug/L) 12 30 6/6/07
Analyte Results AL Date
Lead (µg/L) 90th percentile sample 3 15 9/14/06 UNREGULATED CONTAMINANTS (b)
Copper (mg/L) 90th percentile sample 0.14 1.3 9/14/06 Analyte (Units) Results Date
Alkalinity as CaCO3 (mg/L) 66.5 11/2/06
Microbiological Contaminants (a) Results MCL Date Specific Conductance (umhos/cm2) 384 11/2/06
Total Coliform Absent < 1/month Monthly Total Hardness as CaCO3 (mg/L) 119 11/2/06
E. coli Absent Absent Monthly Calcium ( mg/L) 41.5 11/2/06
Chlorine Residual <0.1-0.3 <4.0 Weekly Magnesium (mg/L) 3.8 11/2/06
Hydrogen Sulfide (mg/L) 0.22 11/2/06
Orthophosphate (mg/L) average 1.18 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.