Pennichuck Water Works Water System

MyTapWater.org's tap water quality report is the compilation of data collected from federal, state, and local government agencies, most prominently the EPA. We strive to populate the report with the latest data concerning water contaminants, lead and copper levels, and water quality violations. We only collect drinking water data from public water systems.

PWS Service Information
PWS ID: NH1621010
Type: Community water system
EPA Region: 01
Primary Service Area: Municipality
Primary Source: Surface water
Population Served: 87,682
Contact Information
PENNICHUCK WATER WORKS INC
GARY TETLEY
PO BOX 1947
MERRIMACK, NH 03054

This public water system services 1 municipality in 1 county.

Summary Results


A summary view of tests in which a water contaminant found to exceed the Maximum Contaminant Level (MCL) set by the EPA.

Maximum Contaminant Levels Exceeded (by year):

Contaminant Detailed Results


This a view of violations of maximum contaminant levels. Use the expanded view see result data for a drinking water contaminant, the minimum level that can be recognized in a test (MRL), and upper limit that is considered healthy (HRL).

HAA5

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0 0.00 8.2
2018 2018-04-09 0 0.00 10.1
2018 2018-04-09 0 0.00 8
2018 2018-04-09 0 0.00 8.5
2018 2018-04-09 0 0.00 8.6
2018 2018-04-09 0 0.00 11.1
2018 2018-04-09 0 0.00 9.7
2018 2018-04-09 0 0.00 9.2

HAA6Br

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0 0.00 6.3
2018 2018-04-09 0 0.00 6.6
2018 2018-04-09 0 0.00 6.2
2018 2018-04-09 0 0.00 6.3
2018 2018-04-09 0 0.00 6.4
2018 2018-04-09 0 0.00 7
2018 2018-04-09 0 0.00 6.8
2018 2018-04-09 0 0.00 6.5

HAA9

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0 0.00 13.8
2018 2018-04-09 0 0.00 16
2018 2018-04-09 0 0.00 13.4
2018 2018-04-09 0 0.00 14.1
2018 2018-04-09 0 0.00 14.3
2018 2018-04-09 0 0.00 17.3
2018 2018-04-09 0 0.00 15.8
2018 2018-04-09 0 0.00 15

1-butanol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 2 0.00 < 2

2-methoxyethanol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.4 0.00 < 0.4

2-propen-1-ol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.5 0.00 < 0.5

alpha-hexachlorocyclohexane

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.01 0.00 < 0.01

chlorpyrifos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.03 0.00 < 0.03

dimethipin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.2 0.00 < 0.2

ethoprop

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.03 0.00 < 0.03

oxyfluorfen

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.05 0.00 < 0.05

profenofos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.3 0.00 < 0.3

tebuconazole

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.2 0.00 < 0.2

total permethrin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.04 0.00 < 0.04

tribufos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-09 0.07 0.00 < 0.07

butylated hydroxyanisole

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-23 0.03 0.00 < 0.03

o-toluidine

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-23 0.007 0.00 < 0.007

quinoline

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-04-23 0.02 0.00 < 0.02

Other Water Contaminants Tested


The following contaminants were tested and found to be within national EPA guidelines.

Contaminant MRLMinimum Reporting Level HRLHealth Risk Limit Avg Result
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.03 6.14 < 0.03
2015 2015-01-12 0.03 6.14 < 0.03
2014 2014-10-15 0.03 6.14 < 0.03
2014 2014-07-16 0.03 6.14 < 0.03
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.03 0.0004 < 0.03
2015 2015-01-12 0.03 0.0004 < 0.03
2014 2014-10-15 0.03 0.0004 < 0.03
2014 2014-07-16 0.03 0.0004 < 0.03
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.1 0.0103 < 0.1
2015 2015-01-12 0.1 0.0103 < 0.1
2014 2014-10-15 0.1 0.0103 < 0.1
2014 2014-07-16 0.1 0.0103 < 0.1
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.07 0.35 < 0.07
2015 2015-01-12 0.07 0.35 < 0.07
2014 2014-10-15 0.07 0.35 < 0.07
2014 2014-07-16 0.07 0.35 < 0.07
17-alpha-ethynylestradiol 0.0009 0.035 < 0.0009 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.0009 0.035 < 0.0009
2015 2015-01-12 0.0009 0.035 < 0.0009
2014 2014-10-15 0.0009 0.035 < 0.0009
2014 2014-07-16 0.0009 0.035 < 0.0009
17-beta-estradiol 0.0004 0.0009 < 0.0004 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.0004 0.0009 < 0.0004
2015 2015-01-12 0.0004 0.0009 < 0.0004
2014 2014-10-15 0.0004 0.0009 < 0.0004
2014 2014-07-16 0.0004 0.0009 < 0.0004
4-androstene-3,17-dione 0.0003 0 < 0.0003 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.0003 0 < 0.0003
2015 2015-01-12 0.0003 0 < 0.0003
2014 2014-10-15 0.0003 0 < 0.0003
2014 2014-07-16 0.0003 0 < 0.0003
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.2 140 < 0.2
2015 2015-01-12 0.2 140 < 0.2
2014 2014-10-15 0.2 140 < 0.2
2014 2014-07-16 0.2 140 < 0.2
chlorate 20 210 117.125 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 20 210 76
2015 2015-04-16 20 210 100
2015 2015-01-12 20 210 79
2015 2015-01-12 20 210 72
2014 2014-10-15 20 210 130
2014 2014-10-15 20 210 150
2014 2014-07-16 20 210 190
2014 2014-07-16 20 210 140
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.2 2.69 < 0.2
2015 2015-01-12 0.2 2.69 < 0.2
2014 2014-10-15 0.2 2.69 < 0.2
2014 2014-07-16 0.2 2.69 < 0.2
chromium 0.2 100 0.025 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.2 100 < 0.2
2015 2015-04-16 0.2 100 < 0.2
2015 2015-02-04 0.2 100 < 0.2
2015 2015-01-12 0.2 100 < 0.2
2014 2014-11-07 0.2 100 0.2
2014 2014-10-15 0.2 100 < 0.2
2014 2014-07-16 0.2 100 < 0.2
2014 2014-07-16 0.2 100 < 0.2
chromium-6 0.03 0 0.0488 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.03 0 < 0.03
2015 2015-04-16 0.03 0 0.05
2015 2015-01-12 0.03 0 < 0.03
2015 2015-01-12 0.03 0 0.06
2014 2014-10-15 0.03 0 0.04
2014 2014-10-15 0.03 0 0.1
2014 2014-07-16 0.03 0 0.06
2014 2014-07-16 0.03 0 0.08
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 1 70 < 1
2015 2015-04-16 1 70 < 1
2015 2015-02-04 1 70 < 1
2015 2015-01-12 1 70 < 1
2014 2014-11-07 1 70 < 1
2014 2014-10-15 1 70 < 1
2014 2014-07-16 1 70 < 1
2014 2014-07-16 1 70 < 1
equilin 0.004 0.35 < 0.004 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.004 0.35 < 0.004
2015 2015-01-12 0.004 0.35 < 0.004
2014 2014-10-15 0.004 0.35 < 0.004
2014 2014-07-16 0.004 0.35 < 0.004
estriol 0.0008 0.35 < 0.0008 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.0008 0.35 < 0.0008
2015 2015-01-12 0.0008 0.35 < 0.0008
2014 2014-10-15 0.0008 0.35 < 0.0008
2014 2014-07-16 0.0008 0.35 < 0.0008
estrone 0.002 0.35 < 0.002 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.002 0.35 < 0.002
2015 2015-01-12 0.002 0.35 < 0.002
2014 2014-10-15 0.002 0.35 < 0.002
2014 2014-07-16 0.002 0.35 < 0.002
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.06 90 < 0.06
2015 2015-01-12 0.06 90 < 0.06
2014 2014-10-15 0.06 90 < 0.06
2014 2014-07-16 0.06 90 < 0.06
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.08 0 < 0.08
2015 2015-01-12 0.08 0 < 0.08
2014 2014-10-15 0.08 0 < 0.08
2014 2014-07-16 0.08 0 < 0.08
molybdenum 1 40 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 1 40 < 1
2015 2015-04-16 1 40 < 1
2015 2015-02-04 1 40 < 1
2015 2015-01-12 1 40 < 1
2014 2014-11-07 1 40 < 1
2014 2014-10-15 1 40 < 1
2014 2014-07-16 1 40 < 1
2014 2014-07-16 1 40 < 1
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.09 0 < 0.09
2015 2015-01-12 0.09 0 < 0.09
2014 2014-10-15 0.09 0 < 0.09
2014 2014-07-16 0.09 0 < 0.09
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.01 0 < 0.01
2015 2015-01-12 0.01 0 < 0.01
2014 2014-10-15 0.01 0 < 0.01
2014 2014-07-16 0.01 0 < 0.01
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.03 0 < 0.03
2015 2015-01-12 0.03 0 < 0.03
2014 2014-10-15 0.03 0 < 0.03
2014 2014-07-16 0.03 0 < 0.03
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.02 0 < 0.02
2015 2015-01-12 0.02 0 < 0.02
2014 2014-10-15 0.02 0 < 0.02
2014 2014-07-16 0.02 0 < 0.02
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.02 0.07 < 0.02
2015 2015-01-12 0.02 0.07 < 0.02
2014 2014-10-15 0.02 0.07 < 0.02
2014 2014-07-16 0.02 0.07 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.04 0.07 < 0.04
2015 2015-01-12 0.04 0.07 < 0.04
2014 2014-10-15 0.04 0.07 < 0.04
2014 2014-07-16 0.04 0.07 < 0.04
strontium 0.3 1500 71.125 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.3 1500 56
2015 2015-04-16 0.3 1500 86
2015 2015-02-04 0.3 1500 73
2015 2015-01-12 0.3 1500 56
2014 2014-11-07 0.3 1500 85
2014 2014-10-15 0.3 1500 62
2014 2014-07-16 0.3 1500 71
2014 2014-07-16 0.3 1500 80
testosterone 0.0001 0 < 0.0001 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.0001 0 < 0.0001
2015 2015-01-12 0.0001 0 < 0.0001
2014 2014-10-15 0.0001 0 < 0.0001
2014 2014-07-16 0.0001 0 < 0.0001
vanadium 0.2 21 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.2 21 < 0.2
2015 2015-04-16 0.2 21 < 0.2
2015 2015-02-04 0.2 21 < 0.2
2015 2015-01-12 0.2 21 < 0.2
2014 2014-11-07 0.2 21 < 0.2
2014 2014-10-15 0.2 21 < 0.2
2014 2014-07-16 0.2 21 < 0.2
2014 2014-07-16 0.2 21 < 0.2

Lead and Copper Data


Lead and copper are recorded separately from other contaminants because of the Lead and Copper Rule. As with all other results, these are the findings at the water supply level. Lead and copper can be — and often are — deposited in drinking water in between the water facility and your tap.

Sample ID Contaminant Sampling Start Date Sampling End Date Result
1016 lead 2015-01-01 2017-12-31 0.002mg/L
1015 lead 2012-01-01 2014-12-31 0mg/L
1014 lead 2009-01-01 2011-12-31 0mg/L
1013 lead 2006-01-01 2008-12-31 0.005mg/L

Violations


Known violations of the Safe Drinking Water Act as recorded by the EPA.

Compliance Dates Rule Violation Type Contaminant Name Status
2002-08-01 - 2002-08-31 Surface Water Treatment Rule Treatment Technique (SWTR and GWR) Surface Water Treatment Rule Returned to Compliance
2008-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Returned to Compliance

Local Water Testing


Find a lab in your area so you can get your tap or well water tested. This list contains both governmental and private labs, all of which are EPA-certified for drinking water testing.

Lab Location Zip Code
DERRY WASTEWATER TREATMENT PLANT DERRY, NH 03038
GRANITE STATE ANALYTICAL SERVICES LLC DERRY, NH 03038
MANCHESTER WATER WORKS LABORATORY MANCHESTER, NH 03109

Water Service Information


Convenient information about your water service.

Unable to identify any billing information about Pennichuck Water Works (NH1621010).

What My Water Data Means


Water data isn't always easy to interpret, but by following the links on this page you should be able to have most of your questions answered. By clicking the name of a water contaminant or secondary substance you can learn about that specific substance. Ultimately this page should give you some insight towards learning if your water is safe, what water filter you should buy (if any), and how well your local water compares against other sources.

Sources


The origin of MyTapWater.org's water data is explained on our Data Sources page.

Why Is My Water Data Not More Recent?


The recency of the data for your ZIP code depends on the last your water source was tested, by a federal, state, or local agency. More information about the timing can be determined by learning about the dataset in question and seeing how often the EPA (other another governing body) mandated testing.