Maple Shade Water Department 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: NJ0319001
Type: Community water system
EPA Region: 02
Primary Source: Surface water purchased
Population Served: 19,400 		Contact Information
REILLY, JIM
REILLY, JIM
432 PARK AVE
MAPLE SHADE, NJ 08052

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):

2013   (0) 2014   (1) 2015   (1) 2016   (0) 2017   (0) 2018   (0)
1,4-dioxane 1,4-dioxane

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).

1,4-dioxane

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2015 2015-10-12 0.07 0.35 < 0.07
2015 2015-04-28 0.07 0.35 0.39792
2015 2015-04-28 0.07 0.35 0.42994
2015 2015-04-28 0.07 0.35 < 0.07
2015 2015-01-29 0.07 0.35 < 0.07
2014 2014-12-30 0.07 0.35 < 0.07
2014 2014-12-30 0.07 0.35 0.41296
2014 2014-12-30 0.07 0.35 0.33167

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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 0.0465 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.03 6.14 < 0.03
2015 2015-04-28 0.03 6.14 0.085
2015 2015-04-28 0.03 6.14 0.089
2015 2015-04-28 0.03 6.14 < 0.03
2015 2015-01-29 0.03 6.14 < 0.03
2014 2014-12-30 0.03 6.14 < 0.03
2014 2014-12-30 0.03 6.14 0.098
2014 2014-12-30 0.03 6.14 0.1
[+] Expand Test Data
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.03 0.0004 < 0.03
2015 2015-04-28 0.03 0.0004 < 0.03
2015 2015-04-28 0.03 0.0004 < 0.03
2015 2015-04-28 0.03 0.0004 < 0.03
2015 2015-01-29 0.03 0.0004 < 0.03
2014 2014-12-30 0.03 0.0004 < 0.03
2014 2014-12-30 0.03 0.0004 < 0.03
2014 2014-12-30 0.03 0.0004 < 0.03
[+] Expand Test Data
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.1 0.0103 < 0.1
2015 2015-04-28 0.1 0.0103 < 0.1
2015 2015-04-28 0.1 0.0103 < 0.1
2015 2015-04-28 0.1 0.0103 < 0.1
2015 2015-01-29 0.1 0.0103 < 0.1
2014 2014-12-30 0.1 0.0103 < 0.1
2014 2014-12-30 0.1 0.0103 < 0.1
2014 2014-12-30 0.1 0.0103 < 0.1
[+] Expand Test Data
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.2 140 < 0.2
2015 2015-04-28 0.2 140 < 0.2
2015 2015-04-28 0.2 140 < 0.2
2015 2015-04-28 0.2 140 < 0.2
2015 2015-01-29 0.2 140 < 0.2
2014 2014-12-30 0.2 140 < 0.2
2014 2014-12-30 0.2 140 < 0.2
2014 2014-12-30 0.2 140 < 0.2
[+] Expand Test Data
chlorate 20 210 14.3587 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 20 210 44
2015 2015-10-12 20 210 34
2015 2015-04-28 20 210 < 20
2015 2015-04-28 20 210 < 20
2015 2015-04-28 20 210 < 20
2015 2015-04-28 20 210 < 20
2015 2015-01-29 20 210 < 20
2015 2015-01-29 20 210 < 20
2014 2014-12-30 20 210 47.546
2014 2014-12-30 20 210 < 20
2014 2014-12-30 20 210 46.758
2014 2014-12-30 20 210 < 20
[+] Expand Test Data
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.2 2.69 < 0.2
2015 2015-04-28 0.2 2.69 < 0.2
2015 2015-04-28 0.2 2.69 < 0.2
2015 2015-04-28 0.2 2.69 < 0.2
2015 2015-01-29 0.2 2.69 < 0.2
2014 2014-12-30 0.2 2.69 < 0.2
2014 2014-12-30 0.2 2.69 < 0.2
2014 2014-12-30 0.2 2.69 < 0.2
[+] Expand Test Data
chromium 0.2 100 0.4363 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.2 100 < 0.2
2015 2015-10-12 0.2 100 0.9
2015 2015-04-28 0.2 100 < 0.2
2015 2015-04-28 0.2 100 < 0.2
2015 2015-04-28 0.2 100 0.685
2015 2015-04-28 0.2 100 1.088
2015 2015-01-29 0.2 100 0.786
2015 2015-01-29 0.2 100 1.212
2014 2014-12-30 0.2 100 0.275
2014 2014-12-30 0.2 100 < 0.2
2014 2014-12-30 0.2 100 0.29
2014 2014-12-30 0.2 100 < 0.2
[+] Expand Test Data
chromium-6 0.03 0 0.3409 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.03 0 0.05
2015 2015-10-12 0.03 0 0.61
2015 2015-04-28 0.03 0 < 0.03
2015 2015-04-28 0.03 0 < 0.03
2015 2015-04-28 0.03 0 0.684
2015 2015-04-28 0.03 0 0.758
2015 2015-01-29 0.03 0 0.73
2015 2015-01-29 0.03 0 0.757
2014 2014-12-30 0.03 0 0.255
2014 2014-12-30 0.03 0 < 0.03
2014 2014-12-30 0.03 0 0.247
2014 2014-12-30 0.03 0 < 0.03
[+] Expand Test Data
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 1 70 < 1
2015 2015-10-12 1 70 < 1
2015 2015-04-28 1 70 < 1
2015 2015-04-28 1 70 < 1
2015 2015-04-28 1 70 < 1
2015 2015-04-28 1 70 < 1
2015 2015-01-29 1 70 < 1
2015 2015-01-29 1 70 < 1
2014 2014-12-30 1 70 < 1
2014 2014-12-30 1 70 < 1
2014 2014-12-30 1 70 < 1
2014 2014-12-30 1 70 < 1
[+] Expand Test Data
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.06 90 < 0.06
2015 2015-04-28 0.06 90 < 0.06
2015 2015-04-28 0.06 90 < 0.06
2015 2015-04-28 0.06 90 < 0.06
2015 2015-01-29 0.06 90 < 0.06
2014 2014-12-30 0.06 90 < 0.06
2014 2014-12-30 0.06 90 < 0.06
2014 2014-12-30 0.06 90 < 0.06
[+] Expand Test Data
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.08 0 < 0.08
2015 2015-04-28 0.08 0 < 0.08
2015 2015-04-28 0.08 0 < 0.08
2015 2015-04-28 0.08 0 < 0.08
2015 2015-01-29 0.08 0 < 0.08
2014 2014-12-30 0.08 0 < 0.08
2014 2014-12-30 0.08 0 < 0.08
2014 2014-12-30 0.08 0 < 0.08
[+] Expand Test Data
molybdenum 1 40 0.5792 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 1 40 < 1
2015 2015-10-12 1 40 1.1
2015 2015-04-28 1 40 < 1
2015 2015-04-28 1 40 < 1
2015 2015-04-28 1 40 1.329
2015 2015-04-28 1 40 1.467
2015 2015-01-29 1 40 1.509
2015 2015-01-29 1 40 1.545
2014 2014-12-30 1 40 < 1
2014 2014-12-30 1 40 < 1
2014 2014-12-30 1 40 < 1
2014 2014-12-30 1 40 < 1
[+] Expand Test Data
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.09 0 < 0.09
2015 2015-04-28 0.09 0 < 0.09
2015 2015-04-28 0.09 0 < 0.09
2015 2015-04-28 0.09 0 < 0.09
2015 2015-01-29 0.09 0 < 0.09
2014 2014-12-30 0.09 0 < 0.09
2014 2014-12-30 0.09 0 < 0.09
2014 2014-12-30 0.09 0 < 0.09
[+] Expand Test Data
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.01 0 < 0.01
2015 2015-04-28 0.01 0 < 0.01
2015 2015-04-28 0.01 0 < 0.01
2015 2015-04-28 0.01 0 < 0.01
2015 2015-01-29 0.01 0 < 0.01
2014 2014-12-30 0.01 0 < 0.01
2014 2014-12-30 0.01 0 < 0.01
2014 2014-12-30 0.01 0 < 0.01
[+] Expand Test Data
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.03 0 < 0.03
2015 2015-04-28 0.03 0 < 0.03
2015 2015-04-28 0.03 0 < 0.03
2015 2015-04-28 0.03 0 < 0.03
2015 2015-01-29 0.03 0 < 0.03
2014 2014-12-30 0.03 0 < 0.03
2014 2014-12-30 0.03 0 < 0.03
2014 2014-12-30 0.03 0 < 0.03
[+] Expand Test Data
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.02 0 < 0.02
2015 2015-04-28 0.02 0 < 0.02
2015 2015-04-28 0.02 0 < 0.02
2015 2015-04-28 0.02 0 < 0.02
2015 2015-01-29 0.02 0 < 0.02
2014 2014-12-30 0.02 0 < 0.02
2014 2014-12-30 0.02 0 < 0.02
2014 2014-12-30 0.02 0 < 0.02
[+] Expand Test Data
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.02 0.07 < 0.02
2015 2015-04-28 0.02 0.07 < 0.02
2015 2015-04-28 0.02 0.07 < 0.02
2015 2015-04-28 0.02 0.07 < 0.02
2015 2015-01-29 0.02 0.07 < 0.02
2014 2014-12-30 0.02 0.07 < 0.02
2014 2014-12-30 0.02 0.07 < 0.02
2014 2014-12-30 0.02 0.07 < 0.02
[+] Expand Test Data
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.04 0.07 < 0.04
2015 2015-04-28 0.04 0.07 < 0.04
2015 2015-04-28 0.04 0.07 < 0.04
2015 2015-04-28 0.04 0.07 < 0.04
2015 2015-01-29 0.04 0.07 < 0.04
2014 2014-12-30 0.04 0.07 < 0.04
2014 2014-12-30 0.04 0.07 < 0.04
2014 2014-12-30 0.04 0.07 < 0.04
[+] Expand Test Data
vanadium 0.2 21 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.2 21 < 0.2
2015 2015-10-12 0.2 21 < 0.2
2015 2015-04-28 0.2 21 < 0.2
2015 2015-04-28 0.2 21 < 0.2
2015 2015-04-28 0.2 21 < 0.2
2015 2015-04-28 0.2 21 < 0.2
2015 2015-01-29 0.2 21 < 0.2
2015 2015-01-29 0.2 21 < 0.2
2014 2014-12-30 0.2 21 < 0.2
2014 2014-12-30 0.2 21 < 0.2
2014 2014-12-30 0.2 21 < 0.2
2014 2014-12-30 0.2 21 < 0.2
[+] Expand Test Data
strontium 0.3 1500 353.8695 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-12 0.3 1500 470
2015 2015-10-12 0.3 1500 110
2015 2015-04-28 0.3 1500 523.168
2015 2015-04-28 0.3 1500 534.745
2015 2015-04-28 0.3 1500 70.811
2015 2015-04-28 0.3 1500 117.373
2015 2015-01-29 0.3 1500 181.133
2015 2015-01-29 0.3 1500 131.008
2014 2014-12-30 0.3 1500 522.283
2014 2014-12-30 0.3 1500 727.064
2014 2014-12-30 0.3 1500 504.979
[+] Expand Test Data

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
NJ143517 lead 2016-01-01 2018-12-31 0.0012mg/L
NJ138655 lead 2013-01-01 2015-12-31 0.0015mg/L
NJ135078 lead 2012-01-01 2014-12-31 0.00092mg/L
NJ133512 lead 2010-01-01 2012-12-31 0.00085mg/L
NJ127600 lead 2007-01-01 2009-12-31 0mg/L
NJ113332 lead 2006-01-01 2008-12-31 0mg/L

Violations

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

Compliance Dates Rule Violation Type Contaminant Name Status
2017-05-01 - 2017-07-31 Stage 2 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2017-05-01 - 2017-07-31 Stage 2 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2016-10-01 - 2016-10-31 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Returned to Compliance
2015-01-01 - 2015-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2013-02-01 - 2013-04-30 Stage 2 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2013-02-01 - 2013-04-30 Stage 2 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2012-01-01 - 2012-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2012-01-01 - 2012-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2009-01-01 - 2009-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2009-01-01 - 2009-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2008-10-01 - 2008-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2008-10-01 - 2008-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2008-07-01 - 2008-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2008-07-01 - 2008-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2008-04-01 - 2008-06-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2008-04-01 - 2008-06-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2005-10-01 - 2005-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2005-10-01 - 2005-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2005-07-01 - 2005-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2005-07-01 - 2005-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2005-04-01 - 2005-06-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2005-04-01 - 2005-06-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2005-01-01 - 2005-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2005-01-01 - 2005-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2004-10-01 - 2004-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2004-10-01 - 2004-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2002-01-01 - 2004-12-31 Inorganic Chemicals Monitoring, Regular Thallium, Total Returned to Compliance
2002-01-01 - 2004-12-31 Inorganic Chemicals Monitoring, Regular Antimony, Total Returned to Compliance
2002-01-01 - 2004-12-31 Arsenic Monitoring, Regular Arsenic Returned to Compliance
2002-01-01 - 2004-12-31 Inorganic Chemicals Monitoring, Regular Barium Returned to Compliance
2002-01-01 - 2004-12-31 Inorganic Chemicals Monitoring, Regular Beryllium, Total Returned to Compliance
2002-01-01 - 2004-12-31 Inorganic Chemicals Monitoring, Regular Cadmium Returned to Compliance
2002-01-01 - 2004-12-31 Inorganic Chemicals Monitoring, Regular Chromium Returned to Compliance
2002-01-01 - 2004-12-31 Inorganic Chemicals Monitoring, Regular CYANIDE Returned to Compliance
2002-01-01 - 2004-12-31 Inorganic Chemicals Monitoring, Regular Mercury Returned to Compliance
2002-01-01 - 2004-12-31 Inorganic Chemicals Monitoring, Regular Nickel Returned to Compliance
2002-01-01 - 2004-12-31 Inorganic Chemicals Monitoring, Regular Selenium Returned to Compliance
2004-07-01 - 2004-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2004-07-01 - 2004-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2004-04-01 - 2004-06-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2004-04-01 - 2004-06-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2004-01-01 - 2004-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2004-01-01 - 2004-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2001-01-01 - 2001-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2001-09-01 - 2001-09-30 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
2005-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Returned to Compliance
2011-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Selenium Known
- N/A Inorganic Chemicals Monitoring, Regular Selenium Known
- N/A Inorganic Chemicals Monitoring, Regular Mercury Known
- N/A Inorganic Chemicals Monitoring, Regular Mercury Known
- N/A Inorganic Chemicals Monitoring, Regular Fluoride Known
- N/A Inorganic Chemicals Monitoring, Regular Fluoride Known
- N/A Inorganic Chemicals Monitoring, Regular Chromium Known
- N/A Inorganic Chemicals Monitoring, Regular Chromium Known
- N/A Inorganic Chemicals Monitoring, Regular Cadmium Known
- N/A Inorganic Chemicals Monitoring, Regular Cadmium Known
- N/A Inorganic Chemicals Monitoring, Regular Barium Known
- N/A Inorganic Chemicals Monitoring, Regular Barium Known
- N/A Arsenic Monitoring, Regular Arsenic Known
- N/A Arsenic Monitoring, Regular Arsenic Known

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
EMSL Analytical, Inc. Cinnaminson, NJ 08077
EMSL Analytical, Inc – Cinnaminson Cinnaminson, NJ 8077
JACOBS Engineering Morristown, NJ 07960

Water Bill Information

Convenient information about your water service.

Unable to identify any billing information about Maple Shade Water Department (NJ0319001).

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.