Page 1 of 2 Update: 4/11/07
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
MINISTERIAL - LONDONDERRY, NH
EPA # 0612020
VOLATILE ORGANIC CONTAMINANTS (b) (Units µg/L)
Analyte Result MCL Date Analyte Result MCL Date
1,1,1,2-Tetrachloroethane < 0.5 NR 10/27/05 Diisopropyl Ether (DIPE) < 0.5 NR 10/27/05
1,1,1-Trichloroethane < 0.5 200 10/27/05 Ethyl Tert-Butyl Ether (ETBE) < 0.5 NR 10/27/05
1,1,2,2-Tetrachloroethane < 0.5 NR 10/27/05 Ethylbenzene < 0.5 700 10/27/05
1,1,2-Trichloroethane < 0.5 5 10/27/05 Hexachlorobutadiene < 0.5 NR 10/27/05
1,1-Dichloroethane < 0.5 NR 10/27/05 Isopropylbenzene < 0.5 NR 10/27/05
1,1-Dichloroethane < 0.5 7 10/27/05 m/p - Xylenes < 0.5 NR 10/27/05
1,1-Dichloropropylene < 0.5 NR 10/27/05 Methyl ethyl ketone (MEK) 2-Butanone < 0.5 NR 10/27/05
1,2,3-Trichlorobenzene < 0.5 NR 10/27/05 Methylene chloride < 0.5 5 10/27/05
1,2,3-Trichloropropane < 0.5 NR 10/27/05 Methyl-t-butyl-ether (MtBE) < 0.5 13 10/27/05
1,2,4-Trichlorobenzene < 0.5 70 10/27/05 Napthalene < 0.5 NR 10/27/05
1,2,4-Trimethylbenzene < 0.5 NR 10/27/05 n-Butylbenzene < 0.5 NR 10/27/05
1,2-Dibromo - 3- chloropropane < 0.5 0.2 10/27/05 Nitrobensene < 0.5 NR 10/27/05
1,2-Dibromoethane < 0.5 NR 10/27/05 n-Proplybenzene < 0.5 NR 10/27/05
1,2-Dichlorobenzene < 0.5 600 10/27/05 o-Chlorotoluene < 0.5 NR 10/27/05
1,2-Dichloroethane < 0.5 5 10/27/05 o-Xylene < 0.5 NR 10/27/05
1,2-Dichloropropane < 0.5 5 10/27/05 p-Chlorotoluene < 0.5 NR 10/27/05
1,3,5-Trimethylbenzene < 0.5 NR 10/27/05 sec Butylbenzene < 0.5 NR 10/27/05
1,3-Dichlorobenzene < 0.5 NR 10/27/05 Styrene < 0.5 100 10/27/05
1,3-Dichloropropane < 0.5 NR 10/27/05 Tert-Amyl Methyl Ether (TAME) < 0.5 NR 10/27/05
1,4-Dichlorobenzene < 0.5 75 10/27/05 Tert-Butyl Alcohol (TBA) < 0.5 NR 10/27/05
2,2-Dichloropropane < 0.5 NR 10/27/05 Tert-Butylbenzene < 0.5 NR 10/27/05
2-Hexanone < 0.5 NR 10/27/05 Tetrachloroethylene < 0.5 5 10/27/05
4 Methyl-2-Pentanone (MIBK) < 0.5 NR 10/27/05 Tetrachloromethane < 0.5 NR 10/27/05
4-Isopropyltoluene < 0.5 NR 10/27/05 Tetrahydrofuran < 0.5 NR 10/27/05
Acetone < 0.5 NR 10/27/05 Toluene < 0.5 1000 10/27/05
Benzene < 0.5 5 10/27/05 Total Xylenes < 0.5 10,000 10/27/05
Bromobenzene < 0.5 NR 10/27/05 Trans-1, 2-Dichloroethylene < 0.5 100 10/27/05
Bromochloromethane < 0.5 NR 10/27/05 Trans-1, 3-Dichloropropylene < 0.5 NR 10/27/05
Bromomethane < 0.5 NR 10/27/05 Trichloroethylene < 0.5 5 10/27/05
Carbon Disulfide < 0.5 NR 10/27/05 Trichlorofluromethane < 0.5 NR 10/27/05
Chlorobenzene < 0.5 100 10/27/05 Vinyl chloride < 0.5 2 10/27/05
Chloroethane < 0.5 NR 10/27/05
Chloromethane < 0.5 NR 10/27/05  TRIHALOMETHANES 
cis-1, 2-Dichloroethylene < 0.5 70 10/27/05 Bromodichloromethane  < 0.5 80 10/27/05
cis-1, 3-Dichloropropylene < 0.5 NR 10/27/05 Bromoform < 0.5 80 10/27/05
Dibromomethane < 0.5 NR 10/27/05 Dibromochloromethane < 0.5 80 10/27/05
Dichlorodifluoromethane < 0.5 NR 10/27/05 Chloroform  < 0.5 80 10/27/05
Diethyl ether < 0.5 NR 10/27/05 Total Trihalomethanes  < 0.5 80 10/27/05
SYNTHETIC ORGANIC CONTAMINANTS (b) (Units µg/L)
2,4,5-TP (Silvex)  BDL 50 10/21/04 Dinoseb BDL 7 10/21/04
2,4-D BDL 70 10/21/04 Endrin BDL 2 10/21/04
3-Hydorxycarbofuran BDL NR 10/21/04 Ethylene dibromide (EDB) BDL 0.05 10/21/04
Alachlor BDL 2 10/21/04 Fluorene BDL NR 10/21/04
Aldicarb BDL NR 10/21/04 Glyphosate BDL 700 10/21/04
Aldicarb Sulfone BDL NR 10/21/04 Heptachlor BDL 0.4 10/21/04
Aldicarb Sulfoxide BDL NR 10/21/04 Heptachlor Epoxide BDL 0.2 10/21/04
Aldrin BDL NR 10/21/04 Hexachlorobenzene BDL 1 10/21/04
Atrazine BDL 3 10/21/04 Hexachlorocyclopentadiene BDL 50 10/21/04
Benzo (A) pyrene BDL NR 10/21/04 Lindane BDL 0.2 10/21/04
Butachlor BDL NR 10/21/04 Metholachlor BDL NR 10/21/04
Carbaryl BDL NR 10/21/04 Methomyl BDL NR 10/21/04
Carbofuran BDL 40 10/21/04 Methoxychlor BDL 40 10/21/04
Chlordane BDL 2 10/21/04 Metribuzin BDL NR 10/21/04
Di (2-ethylhexyl) adipate BDL NR 10/21/04 Oxamyl (Vydate) BDL 200 10/21/04
Di (2-Ethylhexyl) phthalate BDL 6 10/21/04 Pentachlorophenol BDL 1 10/21/04
Dibromochloropropane (DBCP) BDL NR 10/21/04 Picloram BDL 500 10/21/04
Dicamba BDL NR 10/21/04 Propachlor BDL NR 10/21/04
Dieldrin BDL NR 10/21/04 Simazine BDL 4 10/21/04
Toxaphene BDL 3 10/21/04
Page 2 of 2
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
MINISTERIAL - LONDONDERRY, NH
EPA # 0612020
INORGANIC CONTAMINANTS (b) SECONDARY CONTAMINANTS (b) - AESTHETIC
Analyte Results MCL Date Analyte Results SMCL Date
Antimony (µg/L) < 2 6 10/21/04 Chloride (mg/L) 16 250 10/21/04
Arsenic (µg/L) <4 10 10/21/04 Fluoride (mg/L) 1.21 2 10/21/04
Barium (mg/L) < 0.01 2 10/21/04 Iron (µg/L) 336 300 10/21/04
Beryllium (µg/L) < 2 4 10/21/04 Manganese (µg/L) 102 50 10/21/04
Cadmium (µg/L) < 2 5 10/21/04 pH (Units) 7.49 6.5 – 8.5 10/21/04
Chromium (µg/L) < 10 100 10/21/04 Silver (µg/L) < 4 100 10/21/04
Cyanide (µg/L) < 10 200 10/21/04 Sodium (mg/L) 17.7 100-250 10/21/04
Fluoride (mg/L) 1.21 4 10/21/04 Sulfate (mg/L) 13.2 250 10/21/04
Mercury (µg/L) < 0.2 2 10/21/04 Zinc (mg/L) 0.179 5 10/21/04
Nickel (µg/L) < 10 100 10/21/04
Nitrate-N (mg/L) < 0.2 10 11/16/06 RADIOLOGICAL CONTAMINANTS (b)
Nitrite-N (mg/L) < 0.05 1 10/21/04 Analyte (Units) Results MCL Date
Selenium (µg/L) < 5 50 10/21/04 Adjusted Gross Alpha (pCi/L) 2.3 15 8/31/05
Thallium (µg/L) < 1 2 10/21/04 Radon Gas (pCi/L) 2,360 None 4/11/07
Radium-226 (pCi/L) 1 5 8/31/05
Radium-228 (pCi/L) 0.3 5 8/31/05
Uranium (µg/L) 2.7 30 8/31/05
FIRST DRAW LEAD AND COPPER (a)
Analyte Results AL Date
Lead (µg/L) 90th percentile sample < 5 15 4/24/06 UNREGULATED CONTAMINANTS (b)
Copper (mg/L) 90th percentile sample 0.17 1.3 4/24/06 Analyte (Units) Results Date
Alkalinity as CaCO3 (mg/L) 67 10/21/04
Microbiological Contaminants (a) Results MCL Date Specific Conductance (umhos/cm2) 221 10/21/04
Total Coliform Absent < 1/month Monthly Total Hardness as CaCO3 (mg/L) 67.4 10/21/04
E. coli Absent Absent Monthly Hydrogen Sulfide (mg/L) < 0.02 10/21/04
Chlorine Residual (mg/L) <0.1-0.5 <4.0 Weekly Calcium (mg/L) 18.4 10/21/04
Mangnesium (mg/L) 5.2 10/21/04
Orthophosphate (mg/L) average 1.85 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 Number of Active Wells: 2
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.