City Of San Jose - Evg/edv/coy 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: CA4310020
Type: Community water system
EPA Region: 09
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 93,300
Contact Information
PROVENZANO, JEFF
PROVENZANO, JEFF
3025 TUERS ROAD
SAN JOSE, CA 95121
jeffrey.provenzano@sanjoseca.gov

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).

chlorate

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2013 2013-12-02 20 210 210
2013 2013-12-02 20 210 110
2013 2013-09-09 20 210 < 20
2013 2013-09-09 20 210 320
2013 2013-09-09 20 210 < 20
2013 2013-09-09 20 210 < 20
2013 2013-09-09 20 210 330
2013 2013-09-09 20 210 < 20
2013 2013-06-03 20 210 130
2013 2013-06-03 20 210 140
2013 2013-03-04 20 210 < 20
2013 2013-03-04 20 210 86
2013 2013-03-04 20 210 27
2013 2013-03-04 20 210 < 20
2013 2013-03-04 20 210 110
2013 2013-03-04 20 210 < 20

1-butanol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 2 0.00 < 2
2018 2018-03-12 2 0.00 < 2
2018 2018-03-12 2 0.00 < 2
2018 2018-03-12 2 0.00 < 2
2018 2018-03-12 2 0.00 < 2

2-methoxyethanol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.4 0.00 < 0.4
2018 2018-03-12 0.4 0.00 < 0.4
2018 2018-03-12 0.4 0.00 < 0.4
2018 2018-03-12 0.4 0.00 < 0.4
2018 2018-03-12 0.4 0.00 < 0.4

2-propen-1-ol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.5 0.00 < 0.5
2018 2018-03-12 0.5 0.00 < 0.5
2018 2018-03-12 0.5 0.00 < 0.5
2018 2018-03-12 0.5 0.00 < 0.5
2018 2018-03-12 0.5 0.00 < 0.5

alpha-hexachlorocyclohexane

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.01 0.00 < 0.01
2018 2018-03-12 0.01 0.00 < 0.01
2018 2018-03-12 0.01 0.00 < 0.01
2018 2018-03-12 0.01 0.00 < 0.01
2018 2018-03-12 0.01 0.00 < 0.01

butylated hydroxyanisole

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03

chlorpyrifos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03

dimethipin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.2 0.00 < 0.2
2018 2018-03-12 0.2 0.00 < 0.2
2018 2018-03-12 0.2 0.00 < 0.2
2018 2018-03-12 0.2 0.00 < 0.2
2018 2018-03-12 0.2 0.00 < 0.2

ethoprop

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03
2018 2018-03-12 0.03 0.00 < 0.03

germanium

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-03-12 0.3 0.00 < 0.3
2018 2018-03-12 0.3 0.00 < 0.3
2018 2018-03-12 0.3 0.00 < 0.3
2018 2018-03-12 0.3 0.00 < 0.3

manganese

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-03-12 0.4 0.00 < 0.4
2018 2018-03-12 0.4 0.00 < 0.4
2018 2018-03-12 0.4 0.00 < 0.4
2018 2018-03-12 0.4 0.00 4.13

o-toluidine

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.007 0.00 < 0.007
2018 2018-03-12 0.007 0.00 < 0.007
2018 2018-03-12 0.007 0.00 < 0.007
2018 2018-03-12 0.007 0.00 < 0.007
2018 2018-03-12 0.007 0.00 < 0.007

oxyfluorfen

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.05 0.00 < 0.05
2018 2018-03-12 0.05 0.00 < 0.05
2018 2018-03-12 0.05 0.00 < 0.05
2018 2018-03-12 0.05 0.00 < 0.05
2018 2018-03-12 0.05 0.00 < 0.05

profenofos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.3 0.00 < 0.3
2018 2018-03-12 0.3 0.00 < 0.3
2018 2018-03-12 0.3 0.00 < 0.3
2018 2018-03-12 0.3 0.00 < 0.3
2018 2018-03-12 0.3 0.00 < 0.3

quinoline

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.02 0.00 < 0.02
2018 2018-03-12 0.02 0.00 < 0.02
2018 2018-03-12 0.02 0.00 < 0.02
2018 2018-03-12 0.02 0.00 < 0.02
2018 2018-03-12 0.02 0.00 < 0.02

tebuconazole

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.2 0.00 < 0.2
2018 2018-03-12 0.2 0.00 < 0.2
2018 2018-03-12 0.2 0.00 < 0.2
2018 2018-03-12 0.2 0.00 < 0.2
2018 2018-03-12 0.2 0.00 < 0.2

total permethrin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.04 0.00 < 0.04
2018 2018-03-12 0.04 0.00 < 0.04
2018 2018-03-12 0.04 0.00 < 0.04
2018 2018-03-12 0.04 0.00 < 0.04
2018 2018-03-12 0.04 0.00 < 0.04

tribufos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-04 0.07 0.00 < 0.07
2018 2018-03-12 0.07 0.00 < 0.07
2018 2018-03-12 0.07 0.00 < 0.07
2018 2018-03-12 0.07 0.00 < 0.07
2018 2018-03-12 0.07 0.00 < 0.07

anatoxin-a

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-18 0.03 0.00 < 0.03
2018 2018-06-05 0.03 0.00 < 0.03
2018 2018-05-15 0.03 0.00 < 0.03
2018 2018-05-01 0.03 0.00 < 0.03
2018 2018-04-17 0.03 0.00 < 0.03
2018 2018-04-03 0.03 0.00 < 0.03

cylindrospermopsin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-18 0.09 0.00 < 0.09
2018 2018-06-05 0.09 0.00 < 0.09
2018 2018-05-15 0.09 0.00 < 0.09
2018 2018-05-01 0.09 0.00 < 0.09
2018 2018-04-17 0.09 0.00 < 0.09
2018 2018-04-03 0.09 0.00 < 0.09

total microcystin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-07-17 0.3 0.00 < 0.3
2018 2018-07-02 0.3 0.00 < 0.3
2018 2018-06-18 0.3 0.00 < 0.3
2018 2018-06-05 0.3 0.00 < 0.3

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
chromium 0.2 100 2.0781 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.2 100 < 0.2
2013 2013-12-02 0.2 100 < 0.2
2013 2013-09-09 0.2 100 4.7
2013 2013-09-09 0.2 100 < 0.2
2013 2013-09-09 0.2 100 3.9
2013 2013-09-09 0.2 100 4
2013 2013-09-09 0.2 100 < 0.2
2013 2013-09-09 0.2 100 3.1
2013 2013-06-03 0.2 100 0.29
2013 2013-06-03 0.2 100 < 0.2
2013 2013-03-04 0.2 100 4.2
2013 2013-03-04 0.2 100 0.75
2013 2013-03-04 0.2 100 3.9
2013 2013-03-04 0.2 100 4
2013 2013-03-04 0.2 100 0.21
2013 2013-03-04 0.2 100 4.2
chromium-6 0.03 0 2.212 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.03 0 0.062
2013 2013-12-02 0.03 0 0.07
2013 2013-09-09 0.03 0 5.4
2013 2013-09-09 0.03 0 0.088
2013 2013-09-09 0.03 0 3.8
2013 2013-09-09 0.03 0 4
2013 2013-09-09 0.03 0 0.085
2013 2013-09-09 0.03 0 2.4
2013 2013-06-03 0.03 0 0.075
2013 2013-06-03 0.03 0 0.078
2013 2013-03-04 0.03 0 5.4
2013 2013-03-04 0.03 0 0.071
2013 2013-03-04 0.03 0 4.2
2013 2013-03-04 0.03 0 4.5
2013 2013-03-04 0.03 0 0.063
2013 2013-03-04 0.03 0 5.1
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 1 70 < 1
2013 2013-12-02 1 70 < 1
2013 2013-09-09 1 70 < 1
2013 2013-09-09 1 70 < 1
2013 2013-09-09 1 70 < 1
2013 2013-09-09 1 70 < 1
2013 2013-09-09 1 70 < 1
2013 2013-09-09 1 70 < 1
2013 2013-06-03 1 70 < 1
2013 2013-06-03 1 70 < 1
2013 2013-03-04 1 70 < 1
2013 2013-03-04 1 70 < 1
2013 2013-03-04 1 70 < 1
2013 2013-03-04 1 70 < 1
2013 2013-03-04 1 70 < 1
2013 2013-03-04 1 70 < 1
molybdenum 1 40 0.6688 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 1 40 1.3
2013 2013-12-02 1 40 1.2
2013 2013-09-09 1 40 < 1
2013 2013-09-09 1 40 1.4
2013 2013-09-09 1 40 < 1
2013 2013-09-09 1 40 < 1
2013 2013-09-09 1 40 1.4
2013 2013-09-09 1 40 < 1
2013 2013-06-03 1 40 1.4
2013 2013-06-03 1 40 1.5
2013 2013-03-04 1 40 < 1
2013 2013-03-04 1 40 1.2
2013 2013-03-04 1 40 < 1
2013 2013-03-04 1 40 < 1
2013 2013-03-04 1 40 1.3
2013 2013-03-04 1 40 < 1
strontium 0.3 1500 315.625 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.3 1500 190
2013 2013-12-02 0.3 1500 180
2013 2013-09-09 0.3 1500 460
2013 2013-09-09 0.3 1500 200
2013 2013-09-09 0.3 1500 440
2013 2013-09-09 0.3 1500 400
2013 2013-09-09 0.3 1500 200
2013 2013-09-09 0.3 1500 540
2013 2013-06-03 0.3 1500 200
2013 2013-06-03 0.3 1500 200
2013 2013-03-04 0.3 1500 410
2013 2013-03-04 0.3 1500 220
2013 2013-03-04 0.3 1500 390
2013 2013-03-04 0.3 1500 390
2013 2013-03-04 0.3 1500 200
2013 2013-03-04 0.3 1500 430
vanadium 0.2 21 4.025 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.2 21 2.8
2013 2013-12-02 0.2 21 1.7
2013 2013-09-09 0.2 21 9.1
2013 2013-09-09 0.2 21 3.4
2013 2013-09-09 0.2 21 1.9
2013 2013-09-09 0.2 21 1.7
2013 2013-09-09 0.2 21 3.4
2013 2013-09-09 0.2 21 4.8
2013 2013-06-03 0.2 21 2.7
2013 2013-06-03 0.2 21 2.7
2013 2013-03-04 0.2 21 8.7
2013 2013-03-04 0.2 21 3.6
2013 2013-03-04 0.2 21 2.6
2013 2013-03-04 0.2 21 2.4
2013 2013-03-04 0.2 21 3.8
2013 2013-03-04 0.2 21 9.1
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.03 6.14 < 0.03
2013 2013-09-09 0.03 6.14 < 0.03
2013 2013-09-09 0.03 6.14 < 0.03
2013 2013-09-09 0.03 6.14 < 0.03
2013 2013-07-16 0.03 6.14 < 0.03
2013 2013-03-04 0.03 6.14 < 0.03
2013 2013-03-04 0.03 6.14 < 0.03
2013 2013-03-04 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
2013 2013-12-02 0.03 0.0004 < 0.03
2013 2013-09-09 0.03 0.0004 < 0.03
2013 2013-09-09 0.03 0.0004 < 0.03
2013 2013-09-09 0.03 0.0004 < 0.03
2013 2013-07-16 0.03 0.0004 < 0.03
2013 2013-03-04 0.03 0.0004 < 0.03
2013 2013-03-04 0.03 0.0004 < 0.03
2013 2013-03-04 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
2013 2013-12-02 0.1 0.0103 < 0.1
2013 2013-09-09 0.1 0.0103 < 0.1
2013 2013-09-09 0.1 0.0103 < 0.1
2013 2013-09-09 0.1 0.0103 < 0.1
2013 2013-07-16 0.1 0.0103 < 0.1
2013 2013-03-04 0.1 0.0103 < 0.1
2013 2013-03-04 0.1 0.0103 < 0.1
2013 2013-03-04 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
2013 2013-12-02 0.07 0.35 < 0.07
2013 2013-09-09 0.07 0.35 < 0.07
2013 2013-09-09 0.07 0.35 < 0.07
2013 2013-09-09 0.07 0.35 < 0.07
2013 2013-06-03 0.07 0.35 < 0.07
2013 2013-03-04 0.07 0.35 < 0.07
2013 2013-03-04 0.07 0.35 < 0.07
2013 2013-03-04 0.07 0.35 < 0.07
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.2 140 < 0.2
2013 2013-09-09 0.2 140 < 0.2
2013 2013-09-09 0.2 140 < 0.2
2013 2013-09-09 0.2 140 < 0.2
2013 2013-07-16 0.2 140 < 0.2
2013 2013-03-04 0.2 140 < 0.2
2013 2013-03-04 0.2 140 < 0.2
2013 2013-03-04 0.2 140 < 0.2
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.2 2.69 < 0.2
2013 2013-09-09 0.2 2.69 < 0.2
2013 2013-09-09 0.2 2.69 < 0.2
2013 2013-09-09 0.2 2.69 < 0.2
2013 2013-07-16 0.2 2.69 < 0.2
2013 2013-03-04 0.2 2.69 < 0.2
2013 2013-03-04 0.2 2.69 < 0.2
2013 2013-03-04 0.2 2.69 < 0.2
Halon 1011 0.06 90 0.0288 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.06 90 < 0.06
2013 2013-09-09 0.06 90 < 0.06
2013 2013-09-09 0.06 90 0.11
2013 2013-09-09 0.06 90 < 0.06
2013 2013-07-16 0.06 90 0.12
2013 2013-03-04 0.06 90 < 0.06
2013 2013-03-04 0.06 90 < 0.06
2013 2013-03-04 0.06 90 < 0.06
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.08 0 < 0.08
2013 2013-09-09 0.08 0 < 0.08
2013 2013-09-09 0.08 0 < 0.08
2013 2013-09-09 0.08 0 < 0.08
2013 2013-07-16 0.08 0 < 0.08
2013 2013-03-04 0.08 0 < 0.08
2013 2013-03-04 0.08 0 < 0.08
2013 2013-03-04 0.08 0 < 0.08
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.09 0 < 0.09
2013 2013-09-09 0.09 0 < 0.09
2013 2013-09-09 0.09 0 < 0.09
2013 2013-09-09 0.09 0 < 0.09
2013 2013-06-03 0.09 0 < 0.09
2013 2013-03-04 0.09 0 < 0.09
2013 2013-03-04 0.09 0 < 0.09
2013 2013-03-04 0.09 0 < 0.09
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.01 0 < 0.01
2013 2013-09-09 0.01 0 < 0.01
2013 2013-09-09 0.01 0 < 0.01
2013 2013-09-09 0.01 0 < 0.01
2013 2013-06-03 0.01 0 < 0.01
2013 2013-03-04 0.01 0 < 0.01
2013 2013-03-04 0.01 0 < 0.01
2013 2013-03-04 0.01 0 < 0.01
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.03 0 < 0.03
2013 2013-09-09 0.03 0 < 0.03
2013 2013-09-09 0.03 0 < 0.03
2013 2013-09-09 0.03 0 < 0.03
2013 2013-06-03 0.03 0 < 0.03
2013 2013-03-04 0.03 0 < 0.03
2013 2013-03-04 0.03 0 < 0.03
2013 2013-03-04 0.03 0 < 0.03
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.02 0 < 0.02
2013 2013-09-09 0.02 0 < 0.02
2013 2013-09-09 0.02 0 < 0.02
2013 2013-09-09 0.02 0 < 0.02
2013 2013-06-03 0.02 0 < 0.02
2013 2013-03-04 0.02 0 < 0.02
2013 2013-03-04 0.02 0 < 0.02
2013 2013-03-04 0.02 0 < 0.02
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.02 0.07 < 0.02
2013 2013-09-09 0.02 0.07 < 0.02
2013 2013-09-09 0.02 0.07 < 0.02
2013 2013-09-09 0.02 0.07 < 0.02
2013 2013-06-03 0.02 0.07 < 0.02
2013 2013-03-04 0.02 0.07 < 0.02
2013 2013-03-04 0.02 0.07 < 0.02
2013 2013-03-04 0.02 0.07 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-12-02 0.04 0.07 < 0.04
2013 2013-09-09 0.04 0.07 < 0.04
2013 2013-09-09 0.04 0.07 < 0.04
2013 2013-09-09 0.04 0.07 < 0.04
2013 2013-06-03 0.04 0.07 < 0.04
2013 2013-03-04 0.04 0.07 < 0.04
2013 2013-03-04 0.04 0.07 < 0.04
2013 2013-03-04 0.04 0.07 < 0.04

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
CA61489 lead 2016-01-01 2018-12-31 0mg/L
CA49196 lead 2015-01-01 2017-12-31 0mg/L
CA38866 lead 2012-01-01 2014-12-31 0mg/L
431002012216L lead 2012-01-01 2012-12-31 0.005mg/L
431002008178L lead 2008-01-01 2008-12-31 0.013mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2012-05-01 - 2012-05-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
2010-10-01 - 2010-10-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) 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
Torrent Laboratory, Inc. Milpitas, CA 95035
Datalab San Jose, CA 95131
Santa Clara County Public Health Lab San Jose, CA 95128

Water Service Information


Convenient information about your water service.

Unable to identify any billing information about City Of San Jose - Evg/edv/coy (CA4310020).

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.