The Power of Information

National Drinking Water Database


Meadowbrook - Portsmouth, NH


Serves 145 people - Test data available: 2004-2009

This drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group (EWG) by the New Hampshire Department of Environmental Services. It is part of EWG's national database that includes 47,667 drinking water utilities and 20 million test results. Water utilities nationwide detected more than 300 pollutants between 2004 and 2009. More than half of these chemicals are unregulated, legal in any amount. Despite this widespread contamination, the federal government invests few resources to protecting rivers, reservoirs, and groundwater from pollution in the first place. The information below summarizes test results for this utility and lists potential health concerns.

 
This Drinking Water System
National Average
Exceed Health GuidelinesTests showing chemicals at concentrations above health guidelines established by federal and state health agencies. These guidelines are typically set at a levels that pose no significant health risk.
11 chemicals
4
Health Standard ExceedencesChemicals detected at concentrations above the legal limit, the Maximum Contaminant Level (MCLs) established by the U.S. EPA. Most MCLs are based on annual averages, so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.
2 chemicals
0.5
Pollutants FoundThe total number of contaminants detected since 2004, according to data provided by the state water agency.
15 chemicals
8
Tests ConductedThe total number of number of water quality tests conducted by water utilities and recorded in data provided by the state water agency.
139 tests
420

Contaminants Exceeding Health Guidelines

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
ManganeseManganese is a naturally occurring element released from mineral deposits as well as industrial use.61 ppb
68 ppb
Yes
50 ppb
Yes
50 ppb
Arsenic (total)Arsenic contaminates drinking water due to mining runoff, erosion of natural deposits, emissions from glass and electronics processing and the use of arsenical compounds as wood preservatives and pesticides.7.61 ppb
14 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
Yes
10 ppb
Radium-226Radium-226 is a radioactive element usually found around uranium deposits.0.78 pCi/L
1.3 pCi/L
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 pCi/L
No
5 pCi/L
Radium-228Radium-228 is a radioactive element usually found around uranium deposits.1.07 pCi/L
1.5 pCi/L
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 pCi/L
No
5 pCi/L
DibromochloromethaneDibromochloromethane is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.1.83 ppb
3 ppb
Yes
0.4 ppb
No
80 ppb
BromodichloromethaneBromodichloromethane is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.1.7 ppb
1.7 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
80 ppb
Combined Radium (-226 & -228)Radium is a radioactive element usually found around uranium deposits.2.1 pCi/L
2.3 pCi/L
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 pCi/L
No
5 pCi/L
RadonRadon is a radioactive breakdown product of radium and uranium in soil, rock and water; it is often present in groundwater.1000 pCi/L
1000 pCi/L
Yes
1.5 pCi/L
Legal at any levelThis is the Federal Limit. State Limits may be lower.
Combined Uranium (mg/L)Uranium is a radioactive element commonly found in most rocks; processed uranium ore is used for power generation and weapons manufacture.<0.01 ppb
<0.01 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
30 ppb
BromoformBromoform is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.1.6 ppb
1.6 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
80 ppb
Alpha particle activity (excl radon and uranium)Alpha particles are a form of radiation associated with radioactive mining waste pollutants and natural sources.2.15 pCi/L
2.15 pCi/L
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 pCi/L
No
15 pCi/L
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Other Detected Contaminants

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
ChloroformChloroform is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.0.43 ppb
0.7 ppb
No
5.7 ppb
No
80 ppb
Total trihalomethanes (TTHMs)Total trihalomethanes constitute the sum of four disinfection byproducts: chloroform, bromodichloromethane, dibromochloromethane, and bromoform.3.94 ppb
6.9 ppb
No
9.8 ppb
No
80 ppb
Hydrogen sulfideHydrogen sulfide is a constituent of crude petroleum and natural gas; it is also released from decomposing waste in landfills and sewers and from food processing factories, coke ovens, paper mills, tanneries, and petroleum refineries.120 ppb
190 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
Combined Uranium (pCi/L)Uranium is a radioactive element commonly found in most rocks; processed ore is used for power generation and weapons manufacture.0.3 pCi/L
0.3 pCi/L
NoNo
15 pCi/L
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Contaminants Not Detected - 76 chemicals

1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene, 1,2 Dibromo-3-chloropropane (DBCP), 1,2,4-Trichlorobenzene, 1,2-Dichloroethane, 1,2-Dichloropropane, 2,3,7,8-TCDD (Dioxin), 2,4,5-TP (Silvex), 2,4-d, 3-Hydroxycarbofuran, Alachlor (Lasso), Aldicarb, Aldicarb sulfone, Aldicarb sulfoxide, Aldrin, Aroclor 1016, Aroclor 1221, Aroclor 1232, Aroclor 1242, Aroclor 1248, Aroclor 1254, Aroclor 1260, Atrazine, Benzene, Benzo[a]pyrene, Butachlor, Carbaryl, Carbofuran, Carbon tetrachloride, Chlordane, cis-1,2-Dichloroethylene, Cyanide, Dalapon, Di(2-Ethylhexyl) adipate, Di(2-ethylhexyl) phthalate, Dicamba, Dichloromethane (methylene chloride), Dieldrin, Dinoseb, Diquat, Endothall, Endrin, Ethylene dibromide (EDB), Glyphosate, Heptachlor, Heptachlor epoxide, Hexachlorobenzene (HCB), Hexachlorocyclopentadiene, Lindane, Mercury (total inorganic), Methomyl, Methoxychlor, Metolachlor, Metribuzin, Monochlorobenzene (Chlorobenzene), Mtbe, Nitrate, Nitrite, o-Dichlorobenzene, Oxamyl (Vydate), p-Dichlorobenzene, Pcb 1262, Pentachlorophenol, Picloram, Propachlor, Simazine, Styrene, Tetrachloroethylene, Toluene, Total polychlorinated biphenyls (PCBs), Toxaphene, trans-1,2-Dichloroethylene, Trichloroethylene, Vinyl chloride, Xylenes (total)

Pollution Summary

15Total Contaminants Detected (2004 - 2009)

Arsenic (total), Hydrogen sulfide, Manganese, Chloroform, Bromoform, Bromodichloromethane, Dibromochloromethane, Total trihalomethanes (TTHMs), Alpha particle activity (excl radon and uranium), Radon, Combined Uranium (mg/L), Combined Radium (-226 & -228), Radium-226, Radium-228, Combined Uranium (pCi/L)

1Agricultural Pollutants
(pesticides, fertilizer, factory farms)

Arsenic (total)

2Sprawl and Urban Pollutants
(road runoff, lawn pesticides, human waste)

Arsenic (total), Hydrogen sulfide

9Industrial Pollutants

Arsenic (total), Hydrogen sulfide, Manganese, Alpha particle activity (excl radon and uranium), Combined Uranium (mg/L), Combined Radium (-226 & -228), Radium-226, Radium-228, Combined Uranium (pCi/L)

5Water Treatment and Distribution Byproducts
(pipes and fixtures, treatment chemicals and byproducts)

Chloroform, Bromoform, Bromodichloromethane, Dibromochloromethane, Total trihalomethanes (TTHMs)

10Naturally Occurring
(naturally present but increased for lands denuded by sprawl, agriculture, or industrial development)

Arsenic (total), Hydrogen sulfide, Manganese, Alpha particle activity (excl radon and uranium), Radon, Combined Uranium (mg/L), Combined Radium (-226 & -228), Radium-226, Radium-228, Combined Uranium (pCi/L)

2Unregulated Contaminants
EPA has not established a maximum legal limit in tapwater for these contaminants

Hydrogen sulfide, Radon

EPA Violation Summary

No violations were reported for this system since 2004.

Information on violations is drawn directly from EPA's national violations database in the Agency's Safe Drinking Water Information System. Analyses by others have raised questions about the quality of the information in EPA's database. For the purposes of this investigation, EWG is not showing below or including in our analyses, those violations for individual water suppliers that occurred on days for which the total number of violations assigned by EPA to that water supplier was greater than 20. This criteria was based on common characteristics of incorrect violations data as identified by water utilities, from a review of EPA's violations data by several hundred utilities prior to the release of EWG's investigation.