Page 1 of 2 Update: 4/17/07
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
RICHARDSON ESTATES - DERRY, NH
EPA # 0612130
VOLATILE ORGANIC CONTAMINANTS (b) (Units µg/L)
Analyte Result MCL Date Analyte Result MCL Date
1,1,1,2-Tetrachloroethane BDL NR 9/28/06 1,1,2-Trichloroethane BDL 5 9/28/06
1,1,2,2-Tetrachloroethane BDL NR 9/28/06 1,1-Dichloroethane BDL 7 9/28/06
1,1-Dichloroethane BDL NR 9/28/06 1,2,3-Trichlorobenzene BDL NR 9/28/06
1,1-Dichloropropene BDL NR 9/28/06 1,2,4-Trichlorobenzene BDL 70 9/28/06
1,2,3-Trichloropropane BDL NR 9/28/06 1,2-Dibromo - 3- chloropropane BDL 0.2 9/28/06
1,2,4-Trimethylbenzene BDL NR 9/28/06 1,2-Dichlorobenzene BDL 600 9/28/06
1,2-Dibromoethane BDL NR 9/28/06 1,2-Dichloropropane BDL 5 9/28/06
1,2-Dichloroethane BDL 5 9/28/06 1,3-Dichlorobenzene BDL NR 9/28/06
1,3,5-Trimethylbenzene BDL NR 9/28/06 1,4-Dichlorobenzene BDL 75 9/28/06
1,3-Dichloropropane BDL NR 9/28/06 2-Hexanone BDL NR 9/28/06
2,2-Dichloropropane BDL NR 9/28/06 Benzene BDL 5 9/28/06
Acetone BDL NR 9/28/06 Bromochloromethane BDL NR 9/28/06
Bromobenzene BDL NR 9/28/06 Carbon Disulfide BDL NR 9/28/06
Bromomethane BDL NR 9/28/06 Dibromomethane BDL NR 9/28/06
Chlorobenzene BDL 100 9/28/06 Diethyl ether BDL NR 9/28/06
Chloroethane BDL NR 9/28/06 Hexachlorobutadiene BDL NR 9/28/06
Chloromethane BDL NR 9/28/06 MIBK BDL NR 9/28/06
Dichlorodifluoromethane BDL NR 9/28/06 Methyl-t-butyl-ether BDL 13 9/28/06
Ethylbenzene BDL 700 9/28/06 Napthalene BDL NR 9/28/06
Isopropylbenzene BDL NR 9/28/06 Tetrachloroethene BDL 5 9/28/06
Methyl ethyl ketone BDL NR 9/28/06 Tetrahydrofuran BDL NR 9/28/06
Methylene chloride BDL 5 9/28/06 Trichloroethene BDL 5 9/28/06
Styrene BDL 100 9/28/06 Vinyl chloride BDL 2 9/28/06
Tetrachloromethane BDL NR 9/28/06 cis-1, 3-Dichloropropene BDL NR 9/28/06
Toluene BDL 1000 9/28/06 n-Butylbenzene BDL NR 9/28/06
Trichlorofluromethane BDL NR 9/28/06 o-Chlorotoluene BDL NR 9/28/06
cis-1, 2-Dichloroethene BDL 70 9/28/06 p-Chlorotoluene BDL NR 9/28/06
m/p - Xylenes BDL NR 9/28/06 sec Butylbenzene BDL NR 9/28/06
n-Proplybenzene BDL NR 9/28/06 trans-1, 2-Dichloroethene BDL 100 9/28/06
o-Xylene BDL NR 9/28/06  TRIHALOMETHANES 
p-Isopropyltoluene BDL NR 9/28/06 Bromodichloromethane BDL 80 9/28/06
tert-Butylbenzene BDL NR 9/28/06 Bromoform BDL 80 9/28/06
trans-1, 3-Dichloropropene BDL NR 9/28/06 Chlorodibromomethane  BDL 80 9/28/06
1,1,1-Trichloroethane BDL 200 9/28/06 Chloroform  BDL 80 9/28/06
Total Trihalomethanes  BDL 80 9/28/06
SYNTHETIC ORGANIC CONTAMINANTS (b) (Units µg/L)
2,4-D BDL 70 7/16/03 3-Hydorxycarbofuran BDL NR 7/16/03
Acenaphthylene BDL NR 7/16/03 Alachlor BDL 2 7/16/03
Aldicarb BDL NR 7/16/03 Aldicarb Sulfone BDL NR 7/16/03
Aldicarb Sulfoxide BDL NR 7/16/03 Aldrin BDL NR 7/16/03
Anthracene BDL NR 7/16/03 Atrazine BDL 3 7/16/03
Benzo (A) anthracene BDL NR 7/16/03 Benzo (A) pyrene BDL NR 7/16/03
Benzo (B) fluoranthene BDL NR 7/16/03 Benzo (G,H,I) perylene BDL NR 7/16/03
Benzo (K) fluoranthene BDL NR 7/16/03 Butachlor BDL NR 7/16/03
Butylbenzylphthalate BDL NR 7/16/03 Carbaryl BDL NR 7/16/03
Carbofuran BDL 40 7/16/03 Chlordane BDL 2 7/16/03
Chrysene BDL NR 7/16/03 Di-n-butylphthalate BDL NR 7/16/03
Dibenz (A,H) anthracene BDL NR 7/16/03 Dibromochloropropane BDL NR 7/16/03
Dicamba BDL NR 7/16/03 Dieldrin BDL NR 7/16/03
Diethylphthalate BDL NR 7/16/03 Dimethylphthalate BDL NR 7/16/03
Dinoseb BDL 7 7/16/03 Endrin BDL 2 7/16/03
Ethylene dibromide BDL 0.05 7/16/03 Fluorene BDL NR 7/16/03
Glyphosate BDL 700 7/16/03 Heptachlor BDL 0.4 7/16/03
Heptachlor Epoxide BDL 0.2 7/16/03 Hexachlorobenzene BDL 1 7/16/03
Hexachlorocyclopentadiene BDL 50 7/16/03 Indeno (1,2,3-CD) pyrene BDL NR 7/16/03
Isophorone BDL NR 7/16/03 Lindane BDL 0.2 7/16/03
Methomyl BDL NR 7/16/03 Methoxychlor BDL 40 7/16/03
Metholachlor BDL NR 7/16/03 Metribuzin BDL NR 7/16/03
Oxamyl BDL 200 7/16/03 Pentachlorophenol BDL 1 7/16/03
Phenanthrene BDL NR 7/16/03 Picloram BDL 500 7/16/03
Propachlor BDL NR 7/16/03 Pyrene BDL NR 7/16/03
Silvex BDL 50 7/16/03 Simazine BDL 4 7/16/03
Toxaphene BDL 3 7/16/03 bis (2-ethylhexyl) adipate BDL NR 7/16/03
bis (2-Ethylhexyl) phthalate BDL 6 7/16/03
Page 2 of 2
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
RICHARDSON ESTATES - DERRY, NH
EPA # 0612130
INORGANIC CONTAMINANTS (b) SECONDARY CONTAMINANTS (b) - AESTHETIC
Analyte Results MCL Date Analyte Results SMCL Date
Antimony (µg/L) < 2 6 9/28/06 Aluminum (mg/L) Deleted 0.05 n/a
Arsenic (µg/L) <2 10 9/28/06 Chloride (mg/L) 58 250 9/28/06
Barium (mg/L) <0.01 2 9/28/06 Color (color units) Deleted 15 n/a
Beryllium (µg/L) < 2 4 9/28/06 Copper (mg/L)  <.01 AL=1.3 9/28/06
Cadmium (µg/L) <2 5 9/28/06 Fluoride (mg/L) 0.39 2 9/28/06
Chromium (µg/L) <10 100 9/28/06 Iron (µg/L) 47 300 9/28/06
Cyanide (µg/L) <10 200 9/28/06 Manganese (µg/L) 57 50 9/28/06
Fluoride (mg/L) 0.39 4 9/28/06 pH (Units) 7.74 6.5 – 8.5 9/28/06
Lead (µg/L) <5 AL=15 9/28/06 Silver (µg/L) <4 100 9/28/06
Mercury (µg/L) <0.20 2 9/28/06 Sodium (mg/L) 13.3 100-250 9/28/06
Nickel (µg/L) <10 100 9/28/06 Sulfate (mg/L) 25.5 250 9/28/06
Nitrate-N (mg/L) < 0.2 10 9/28/06 Total Dissolved Solids (mg/L) Deleted 500 n/a
Nitrite-N (mg/L) < 0.05 1 9/28/06 Zinc (mg/L) 0.013 5 9/28/06
Selenium (µg/L) <5 50 9/28/06 Sulfide (mg/L) 1.4   9/28/06
Thallium (µg/L) <1 2 9/28/06
FIRST DRAW LEAD AND COPPER (a) RADIOLOGICAL CONTAMINANTS (b)
Analyte Results AL Date Analyte (Units) Results MCL Date
Lead (µg/L) 90th percentile sample <5 15 Jul-06 Adjusted Gross Alpha (pCi/L) 1.5 15 10/20/05
Copper (mg/L) 90th percentile sample 0.15 1.3 Jul-06 Radon Gas (pCi/L) 1960 None 4/17/07
Radium-226 (pCi/L) 0.5 5 10/20/05
Microbiological Contaminants (a) Results MCL Date Radium-228 (pCi/L) 0.4 5 10/20/05
Total Coliform Absent < 1/month Monthly Uranium (ug/L) 5.1 30 10/20/05
E. coli Absent Absent Monthly
UNREGULATED CONTAMINANTS (b)
Analyte (Units) Results Date Analyte (Units) Results Date
Alkalinity as CaCO3 (mg/L) 72.5 9/28/06 Specific Conductance (umhos/cm2) 381 9/28/06
Calcium (mg/L) 47.5 9/28/06 Total Hardness as CaCO3 (mg/L) 134 9/28/06
Chlorine Residual (mg/L) None n/a Magnesium (mg/L) 3.7 9/28/06
Hydrogen Sulfate (mg/L) 0.21 9/28/06      
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 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.