Page 1 of 2 Update: 5/22/07
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
ASHLEY COMMONS - MILFORD, NH
EPA # 1562020
VOLATILE ORGANIC CONTAMINANTS (b) (Units µg/L)
Analyte Result MCL Date Analyte Result MCL Date
1,1,1,2-Tetrachloroethane < 0.5 NR 12/7/06 Diisopropyl Ether (DIPE) < 0.5 NR 12/7/06
1,1,1-Trichloroethane < 0.5 200 12/7/06 Ethyl Tert-Butyl Ether (ETBE) < 0.5 NR 12/7/06
1,1,2,2-Tetrachloroethane < 0.5 NR 12/7/06 Ethylbenzene < 0.5 700 12/7/06
1,1,2-Trichloroethane < 0.5 5 12/7/06 Hexachlorobutadiene < 0.5 NR 12/7/06
1,1-Dichloroethane < 0.5 NR 12/7/06 Isopropylbenzene < 0.5 NR 12/7/06
1,1-Dichloroethane < 0.5 7 12/7/06 m/p - Xylenes < 0.5 NR 12/7/06
1,1-Dichloropropylene < 0.5 NR 12/7/06 Methyl ethyl ketone (MEK) 2-Butanone < 0.5 NR 12/7/06
1,2,3-Trichlorobenzene < 0.5 NR 12/7/06 Methylene chloride < 0.5 5 12/7/06
1,2,3-Trichloropropane < 0.5 NR 12/7/06 Methyl-t-butyl-ether (MtBE) < 0.5 13 12/7/06
1,2,4-Trichlorobenzene < 0.5 70 12/7/06 Napthalene < 0.5 NR 12/7/06
1,2,4-Trimethylbenzene < 0.5 NR 12/7/06 n-Butylbenzene < 0.5 NR 12/7/06
1,2-Dibromo - 3- chloropropane < 0.5 0.2 12/7/06 Nitrobensene < 0.5 NR 12/7/06
1,2-Dibromoethane < 0.5 NR 12/7/06 n-Proplybenzene < 0.5 NR 12/7/06
1,2-Dichlorobenzene < 0.5 600 12/7/06 o-Chlorotoluene < 0.5 NR 12/7/06
1,2-Dichloroethane < 0.5 5 12/7/06 o-Xylene < 0.5 NR 12/7/06
1,2-Dichloropropane < 0.5 5 12/7/06 p-Chlorotoluene < 0.5 NR 12/7/06
1,3,5-Trimethylbenzene < 0.5 NR 12/7/06 sec Butylbenzene < 0.5 NR 12/7/06
1,3-Dichlorobenzene < 0.5 NR 12/7/06 Styrene < 0.5 100 12/7/06
1,3-Dichloropropane < 0.5 NR 12/7/06 Tert-Amyl Methyl Ether (TAME) < 0.5 NR 12/7/06
1,4-Dichlorobenzene < 0.5 75 12/7/06 Tert-Butyl Alcohol (TBA) < 0.5 NR 12/7/06
2,2-Dichloropropane < 0.5 NR 12/7/06 Tert-Butylbenzene < 0.5 NR 12/7/06
2-Hexanone < 0.5 NR 12/7/06 Tetrachloroethylene < 0.5 5 12/7/06
4 Methyl-2-Pentanone (MIBK) < 0.5 NR 12/7/06 Tetrachloromethane < 0.5 NR 12/7/06
4-Isopropyltoluene < 0.5 NR 12/7/06 Tetrahydrofuran < 0.5 NR 12/7/06
Acetone < 0.5 NR 12/7/06 Toluene < 0.5 1000 12/7/06
Benzene < 0.5 5 12/7/06 Total Xylenes < 0.5 10,000 12/7/06
Bromobenzene < 0.5 NR 12/7/06 Trans-1, 2-Dichloroethylene < 0.5 100 12/7/06
Bromochloromethane < 0.5 NR 12/7/06 Trans-1, 3-Dichloropropylene < 0.5 NR 12/7/06
Bromomethane < 0.5 NR 12/7/06 Trichloroethylene < 0.5 5 12/7/06
Carbon Disulfide < 0.5 NR 12/7/06 Trichlorofluromethane < 0.5 NR 12/7/06
Chlorobenzene < 0.5 100 12/7/06 Vinyl chloride < 0.5 2 12/7/06
Chloroethane < 0.5 NR 12/7/06
Chloromethane < 0.5 NR 12/7/06  TRIHALOMETHANES 
cis-1, 2-Dichloroethylene < 0.5 70 12/7/06 Bromodichloromethane  15 80 12/7/06
cis-1, 3-Dichloropropylene < 0.5 NR 12/7/06 Bromoform 1.2 80 12/7/06
Dibromomethane < 0.5 NR 12/7/06 Dibromochloromethane 7.7 80 12/7/06
Dichlorodifluoromethane < 0.5 NR 12/7/06 Chloroform  9.5 80 12/7/06
Diethyl ether < 0.5 NR 12/7/06 Total Trihalomethanes  33 80 12/7/06
SYNTHETIC ORGANIC CONTAMINANTS (b) (Units µg/L)
2,4,5-TP (Silvex)  BDL 50 12/7/06 Dinoseb BDL 7 12/7/06
2,4-D BDL 70 12/7/06 Endrin BDL 2 12/7/06
3-Hydorxycarbofuran BDL NR 12/7/06 Ethylene dibromide (EDB) BDL 0.05 12/7/06
Alachlor BDL 2 12/7/06 Fluorene BDL NR 12/7/06
Aldicarb BDL NR 12/7/06 Glyphosate BDL 700 12/7/06
Aldicarb Sulfone BDL NR 12/7/06 Heptachlor BDL 0.4 12/7/06
Aldicarb Sulfoxide BDL NR 12/7/06 Heptachlor Epoxide BDL 0.2 12/7/06
Aldrin BDL NR 12/7/06 Hexachlorobenzene BDL 1 12/7/06
Atrazine BDL 3 12/7/06 Hexachlorocyclopentadiene BDL 50 12/7/06
Benzo (A) pyrene BDL NR 12/7/06 Lindane BDL 0.2 12/7/06
Butachlor BDL NR 12/7/06 Metholachlor BDL NR 12/7/06
Carbaryl BDL NR 12/7/06 Methomyl BDL NR 12/7/06
Carbofuran BDL 40 12/7/06 Methoxychlor BDL 40 12/7/06
Chlordane BDL 2 12/7/06 Metribuzin BDL NR 12/7/06
Di (2-ethylhexyl) adipate BDL NR 12/7/06 Oxamyl (Vydate) BDL 200 12/7/06
Di (2-Ethylhexyl) phthalate BDL 6 12/7/06 Pentachlorophenol BDL 1 12/7/06
Dibromochloropropane (DBCP) BDL NR 12/7/06 Picloram BDL 500 12/7/06
Dicamba BDL NR 12/7/06 Propachlor BDL NR 12/7/06
Dieldrin BDL NR 12/7/06 Simazine BDL 4 12/7/06
Toxaphene BDL 3 12/7/06
Page 2 of 2
PENNICHUCK WATER WORKS
WATER QUALITY REPORT
ASHLEY COMMONS - MILFORD, NH
EPA # 1562020
INORGANIC CONTAMINANTS (b) SECONDARY CONTAMINANTS (b) - AESTHETIC
Analyte Results MCL Date Analyte Results SMCL Date
Antimony (µg/L) < 2 6 10/24/05 Chloride (mg/L) 9 250 10/24/05
Arsenic (µg/L) <2 10 10/24/05 Fluoride (mg/L) 3.31 2 12/7/06
Barium (mg/L) < 0.01 2 10/24/05 Iron (µg/L) 626 300 10/24/05
Beryllium (µg/L) < 2 4 10/24/05 Manganese (µg/L) < 10 50 10/24/05
Cadmium (µg/L) < 2 5 10/24/05 pH (Units) 7.33 6.5 – 8.5 10/24/05
Chromium (µg/L) < 10 100 10/24/05 Silver (µg/L) < 4 100 10/24/05
Copper (mg/L) < 0.01 1.3-AL 10/24/05 Sodium (mg/L) 387 100-250 10/24/05
Cyanide (µg/L) < 10 200 10/24/05 Sulfate (mg/L) 840 250 10/24/05
Fluoride (mg/L) 3.31 4 12/7/06 Zinc (mg/L) 0.563 5 10/24/05
Lead (µg/L) < 5 15-AL 10/24/05
Mercury (µg/L) < 0.2 2 10/24/05
Nickel (µg/L) 34 100 10/24/05
Nitrate-N (mg/L) < 0.2 10 12/7/06 RADIOLOGICAL CONTAMINANTS (b)
Nitrite-N (mg/L) < 0.05 1 12/7/06 Analyte (Units) Results MCL Date
Selenium (µg/L) < 5 50 10/24/05 Screen Alpha (pCi/L) 28 None 10/14/02
Thallium (µg/L) < 1 2 10/24/05 Adjusted Gross Alpha (pCi/L) 2 15 10/24/05
Uranium (ug/L) 0.6 30 10/24/05
FIRST DRAW LEAD AND COPPER (a) Radium 226 (pCi/L) 0.1 5 10/24/05
Analyte Results AL Date Radium 228 (pCi/L) 0.8   10/24/05
Lead (µg/L) 90th percentile sample 13 15 2006 Radon Gas (pCi/L) 523 None 5/22/07
Copper (mg/L) 90th percentile sample 0.64 1.3 2006 UNREGULATED CONTAMINANTS (b)
Analyte (Units) Results Date
Microbiological Contaminants (a) Results MCL Date Alkalinity as CaCO3 (mg/L) 22.3 10/24/05
Total Coliform Absent < 1/month Monthly Calcium (mg/L) 10.1 10/24/05
E. coli Absent Absent Monthly Hydrogen Sulfide (mg/L) <0.02 10/24/05
Chlorine Residual (mg/L) 0.3-0.5 <4.0 Weekly Magnesium (mg/L) < 1 10/24/05
Specific Conductance (umhos/cm2) 1850 10/24/05
Total Hardness as CaCO3 (mg/L) 25.2 10/24/05
 
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     < Less Than     > Greater Than
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.