Public Water System: City Of Alhambra

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: CA1910001
Type: Community water system
EPA Region: 09
Primary Source: Surface water purchased
Population Served: 83,089
Contact Information
AHLEN, DENNIS
AHLEN, DENNIS
111 S. FIRST ST.
ALHAMBRA, CA 91801

This public water system services 2 zip codes in 1 municipality in 1 county.

Summary Results


A summary view of the the times a water contaminant was tested and found to exceed the level set by the EPA (the MCL).

Maximum Contaminant Levels Exceeded (by year):

2013   (0) 2014   (1) 2015   (0)
chlorate

Contaminant Detailed Results


This a view of violations of maximum contaminant levels. In the expanded view you can see each know test date for a given contaminant, the result of the test, the minimum level that can be recognized in a test (MRL), and upper limit that is considered healthy (HRL).

chlorate
Is this in your home's pipes?

Year Test Date MRL HRL Test Result
2015 2015-01-06 20 210 65
2015 2015-01-06 20 210 63
2014 2014-10-16 20 210 300
2014 2014-10-16 20 210 210
2014 2014-10-01 20 210 47
2014 2014-10-01 20 210 200
2014 2014-10-01 20 210 200
2014 2014-10-01 20 210 170
2014 2014-10-01 20 210 74
2014 2014-10-01 20 210 190
2014 2014-10-01 20 210 210
2014 2014-10-01 20 210 86
2014 2014-10-01 20 210 190
2014 2014-10-01 20 210 200
2014 2014-07-08 20 210 97
2014 2014-07-08 20 210 110
2014 2014-04-30 20 210 190
2014 2014-04-30 20 210 170
2014 2014-04-10 20 210 < 20
2014 2014-04-10 20 210 120
2014 2014-04-10 20 210 140
2014 2014-04-10 20 210 54
2014 2014-04-10 20 210 110
2014 2014-04-10 20 210 130
2014 2014-04-10 20 210 120
2014 2014-04-10 20 210 68
2014 2014-04-10 20 210 220
2014 2014-04-10 20 210 120

Other Water Contaminants Tested


The following contaminants were tested and within national EPA guidelines.

The last mile of pipe makes a big difference, learn more about testing your water.

Contaminant MRL HRL Avg Result
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 1 70 < 1
2015 2015-01-06 1 70 < 1
2014 2014-10-16 1 70 < 1
2014 2014-10-16 1 70 < 1
2014 2014-10-01 1 70 < 1
2014 2014-10-01 1 70 < 1
2014 2014-10-01 1 70 < 1
2014 2014-10-01 1 70 < 1
2014 2014-10-01 1 70 < 1
2014 2014-10-01 1 70 < 1
2014 2014-10-01 1 70 < 1
2014 2014-10-01 1 70 < 1
2014 2014-10-01 1 70 < 1
2014 2014-10-01 1 70 < 1
2014 2014-07-08 1 70 < 1
2014 2014-07-08 1 70 < 1
2014 2014-04-30 1 70 < 1
2014 2014-04-30 1 70 < 1
2014 2014-04-10 1 70 < 1
2014 2014-04-10 1 70 < 1
2014 2014-04-10 1 70 < 1
2014 2014-04-10 1 70 < 1
2014 2014-04-10 1 70 < 1
2014 2014-04-10 1 70 < 1
2014 2014-04-10 1 70 < 1
2014 2014-04-10 1 70 < 1
2014 2014-04-10 1 70 < 1
2014 2014-04-10 1 70 < 1
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.03 6.14 < 0.03
2014 2014-10-16 0.03 6.14 < 0.03
2014 2014-10-01 0.03 6.14 < 0.03
2014 2014-10-01 0.03 6.14 < 0.03
2014 2014-10-01 0.03 6.14 < 0.03
2014 2014-10-01 0.03 6.14 < 0.03
2014 2014-10-01 0.03 6.14 < 0.03
2014 2014-07-08 0.03 6.14 < 0.03
2014 2014-04-30 0.03 6.14 < 0.03
2014 2014-04-10 0.03 6.14 < 0.03
2014 2014-04-10 0.03 6.14 < 0.03
2014 2014-04-10 0.03 6.14 < 0.03
2014 2014-04-10 0.03 6.14 < 0.03
2014 2014-04-10 0.03 6.14 < 0.03
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.1 0.0103 < 0.1
2014 2014-10-16 0.1 0.0103 < 0.1
2014 2014-10-01 0.1 0.0103 < 0.1
2014 2014-10-01 0.1 0.0103 < 0.1
2014 2014-10-01 0.1 0.0103 < 0.1
2014 2014-10-01 0.1 0.0103 < 0.1
2014 2014-10-01 0.1 0.0103 < 0.1
2014 2014-07-08 0.1 0.0103 < 0.1
2014 2014-04-30 0.1 0.0103 < 0.1
2014 2014-04-10 0.1 0.0103 < 0.1
2014 2014-04-10 0.1 0.0103 < 0.1
2014 2014-04-10 0.1 0.0103 < 0.1
2014 2014-04-10 0.1 0.0103 < 0.1
2014 2014-04-10 0.1 0.0103 < 0.1
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.06 90 < 0.06
2014 2014-10-16 0.06 90 < 0.06
2014 2014-10-01 0.06 90 < 0.06
2014 2014-10-01 0.06 90 < 0.06
2014 2014-10-01 0.06 90 < 0.06
2014 2014-10-01 0.06 90 < 0.06
2014 2014-10-01 0.06 90 < 0.06
2014 2014-07-08 0.06 90 < 0.06
2014 2014-04-30 0.06 90 < 0.06
2014 2014-04-10 0.06 90 < 0.06
2014 2014-04-10 0.06 90 < 0.06
2014 2014-04-10 0.06 90 < 0.06
2014 2014-04-10 0.06 90 < 0.06
2014 2014-04-10 0.06 90 < 0.06
molybdenum 1 40 5.4214 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 1 40 4.4
2015 2015-01-06 1 40 4.4
2014 2014-10-16 1 40 7.6
2014 2014-10-16 1 40 5.7
2014 2014-10-01 1 40 7.8
2014 2014-10-01 1 40 6.8
2014 2014-10-01 1 40 6.1
2014 2014-10-01 1 40 7.9
2014 2014-10-01 1 40 3.7
2014 2014-10-01 1 40 4.2
2014 2014-10-01 1 40 4.7
2014 2014-10-01 1 40 4.3
2014 2014-10-01 1 40 4.1
2014 2014-10-01 1 40 4.6
2014 2014-07-08 1 40 4.9
2014 2014-07-08 1 40 4.8
2014 2014-04-30 1 40 7.1
2014 2014-04-30 1 40 7
2014 2014-04-10 1 40 9.2
2014 2014-04-10 1 40 9
2014 2014-04-10 1 40 4.2
2014 2014-04-10 1 40 3.9
2014 2014-04-10 1 40 2.5
2014 2014-04-10 1 40 4.6
2014 2014-04-10 1 40 4.7
2014 2014-04-10 1 40 4.4
2014 2014-04-10 1 40 6.7
2014 2014-04-10 1 40 2.5
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.2 140 < 0.2
2014 2014-10-16 0.2 140 < 0.2
2014 2014-10-01 0.2 140 < 0.2
2014 2014-10-01 0.2 140 < 0.2
2014 2014-10-01 0.2 140 < 0.2
2014 2014-10-01 0.2 140 < 0.2
2014 2014-10-01 0.2 140 < 0.2
2014 2014-07-08 0.2 140 < 0.2
2014 2014-04-30 0.2 140 < 0.2
2014 2014-04-10 0.2 140 < 0.2
2014 2014-04-10 0.2 140 < 0.2
2014 2014-04-10 0.2 140 < 0.2
2014 2014-04-10 0.2 140 < 0.2
2014 2014-04-10 0.2 140 < 0.2
strontium 0.3 1500 613.2143 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.3 1500 1100
2015 2015-01-06 0.3 1500 1100
2014 2014-10-16 0.3 1500 310
2014 2014-10-16 0.3 1500 480
2014 2014-10-01 0.3 1500 370
2014 2014-10-01 0.3 1500 380
2014 2014-10-01 0.3 1500 430
2014 2014-10-01 0.3 1500 370
2014 2014-10-01 0.3 1500 370
2014 2014-10-01 0.3 1500 1100
2014 2014-10-01 0.3 1500 560
2014 2014-10-01 0.3 1500 1100
2014 2014-10-01 0.3 1500 460
2014 2014-10-01 0.3 1500 580
2014 2014-07-08 0.3 1500 1200
2014 2014-07-08 0.3 1500 1100
2014 2014-04-30 0.3 1500 360
2014 2014-04-30 0.3 1500 350
2014 2014-04-10 0.3 1500 240
2014 2014-04-10 0.3 1500 530
2014 2014-04-10 0.3 1500 230
2014 2014-04-10 0.3 1500 1000
2014 2014-04-10 0.3 1500 480
2014 2014-04-10 0.3 1500 600
2014 2014-04-10 0.3 1500 610
2014 2014-04-10 0.3 1500 970
2014 2014-04-10 0.3 1500 320
2014 2014-04-10 0.3 1500 470
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.03 0 < 0.03
2014 2014-10-16 0.03 0 < 0.03
2014 2014-10-01 0.03 0 < 0.03
2014 2014-10-01 0.03 0 < 0.03
2014 2014-10-01 0.03 0 < 0.03
2014 2014-10-01 0.03 0 < 0.03
2014 2014-10-01 0.03 0 < 0.03
2014 2014-07-08 0.03 0 < 0.03
2014 2014-04-30 0.03 0 < 0.03
2014 2014-04-10 0.03 0 < 0.03
2014 2014-04-10 0.03 0 < 0.03
2014 2014-04-10 0.03 0 < 0.03
2014 2014-04-10 0.03 0 < 0.03
2014 2014-04-10 0.03 0 < 0.03
chromium-6 0.03 0 2.8711 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.03 0 0.044
2015 2015-01-06 0.03 0 0.039
2014 2014-10-16 0.03 0 6
2014 2014-10-16 0.03 0 3.6
2014 2014-10-01 0.03 0 4.9
2014 2014-10-01 0.03 0 4.5
2014 2014-10-01 0.03 0 3.6
2014 2014-10-01 0.03 0 4.9
2014 2014-10-01 0.03 0 4.4
2014 2014-10-01 0.03 0 < 0.03
2014 2014-10-01 0.03 0 3.1
2014 2014-10-01 0.03 0 0.031
2014 2014-10-01 0.03 0 3.7
2014 2014-10-01 0.03 0 3
2014 2014-07-08 0.03 0 0.048
2014 2014-07-08 0.03 0 0.042
2014 2014-04-30 0.03 0 6.4
2014 2014-04-30 0.03 0 6.4
2014 2014-04-10 0.03 0 2.9
2014 2014-04-10 0.03 0 2.8
2014 2014-04-10 0.03 0 3.3
2014 2014-04-10 0.03 0 0.048
2014 2014-04-10 0.03 0 2.6
2014 2014-04-10 0.03 0 2.8
2014 2014-04-10 0.03 0 2.3
2014 2014-04-10 0.03 0 0.04
2014 2014-04-10 0.03 0 6.3
2014 2014-04-10 0.03 0 2.6
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.03 0.0004 < 0.03
2014 2014-10-16 0.03 0.0004 < 0.03
2014 2014-10-01 0.03 0.0004 < 0.03
2014 2014-10-01 0.03 0.0004 < 0.03
2014 2014-10-01 0.03 0.0004 < 0.03
2014 2014-10-01 0.03 0.0004 < 0.03
2014 2014-10-01 0.03 0.0004 < 0.03
2014 2014-07-08 0.03 0.0004 < 0.03
2014 2014-04-30 0.03 0.0004 < 0.03
2014 2014-04-10 0.03 0.0004 < 0.03
2014 2014-04-10 0.03 0.0004 < 0.03
2014 2014-04-10 0.03 0.0004 < 0.03
2014 2014-04-10 0.03 0.0004 < 0.03
2014 2014-04-10 0.03 0.0004 < 0.03
vanadium 0.2 21 4.6964 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.2 21 2.4
2015 2015-01-06 0.2 21 2.5
2014 2014-10-16 0.2 21 4.9
2014 2014-10-16 0.2 21 6.6
2014 2014-10-01 0.2 21 7
2014 2014-10-01 0.2 21 7.4
2014 2014-10-01 0.2 21 3.3
2014 2014-10-01 0.2 21 7
2014 2014-10-01 0.2 21 5.8
2014 2014-10-01 0.2 21 3.2
2014 2014-10-01 0.2 21 4.2
2014 2014-10-01 0.2 21 3.7
2014 2014-10-01 0.2 21 3.4
2014 2014-10-01 0.2 21 4.2
2014 2014-07-08 0.2 21 3.2
2014 2014-07-08 0.2 21 3
2014 2014-04-30 0.2 21 6.1
2014 2014-04-30 0.2 21 6
2014 2014-04-10 0.2 21 4.1
2014 2014-04-10 0.2 21 9.6
2014 2014-04-10 0.2 21 2.2
2014 2014-04-10 0.2 21 9.8
2014 2014-04-10 0.2 21 4.1
2014 2014-04-10 0.2 21 2.9
2014 2014-04-10 0.2 21 3.8
2014 2014-04-10 0.2 21 2.4
2014 2014-04-10 0.2 21 5.9
2014 2014-04-10 0.2 21 2.8
HCFC-22 0.08 0 0.065 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.08 0 < 0.08
2014 2014-10-16 0.08 0 < 0.08
2014 2014-10-01 0.08 0 < 0.08
2014 2014-10-01 0.08 0 < 0.08
2014 2014-10-01 0.08 0 < 0.08
2014 2014-10-01 0.08 0 0.61
2014 2014-10-01 0.08 0 0.3
2014 2014-07-08 0.08 0 < 0.08
2014 2014-04-30 0.08 0 < 0.08
2014 2014-04-10 0.08 0 < 0.08
2014 2014-04-10 0.08 0 < 0.08
2014 2014-04-10 0.08 0 < 0.08
2014 2014-04-10 0.08 0 < 0.08
2014 2014-04-10 0.08 0 < 0.08
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.02 0.07 < 0.02
2014 2014-10-16 0.02 0.07 < 0.02
2014 2014-10-01 0.02 0.07 < 0.02
2014 2014-10-01 0.02 0.07 < 0.02
2014 2014-10-01 0.02 0.07 < 0.02
2014 2014-10-01 0.02 0.07 < 0.02
2014 2014-10-01 0.02 0.07 < 0.02
2014 2014-07-08 0.02 0.07 < 0.02
2014 2014-04-30 0.02 0.07 < 0.02
2014 2014-04-10 0.02 0.07 < 0.02
2014 2014-04-10 0.02 0.07 < 0.02
2014 2014-04-10 0.02 0.07 < 0.02
2014 2014-04-10 0.02 0.07 < 0.02
2014 2014-04-10 0.02 0.07 < 0.02
1,4-dioxane 0.07 0.35 0.0286 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.07 0.35 < 0.07
2014 2014-10-16 0.07 0.35 < 0.07
2014 2014-10-01 0.07 0.35 0.1
2014 2014-10-01 0.07 0.35 < 0.07
2014 2014-10-01 0.07 0.35 < 0.07
2014 2014-10-01 0.07 0.35 0.084
2014 2014-10-01 0.07 0.35 < 0.07
2014 2014-07-08 0.07 0.35 < 0.07
2014 2014-04-30 0.07 0.35 < 0.07
2014 2014-04-10 0.07 0.35 < 0.07
2014 2014-04-10 0.07 0.35 0.077
2014 2014-04-10 0.07 0.35 < 0.07
2014 2014-04-10 0.07 0.35 < 0.07
2014 2014-04-10 0.07 0.35 0.14
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.02 0 < 0.02
2014 2014-10-16 0.02 0 < 0.02
2014 2014-10-01 0.02 0 < 0.02
2014 2014-10-01 0.02 0 < 0.02
2014 2014-10-01 0.02 0 < 0.02
2014 2014-10-01 0.02 0 < 0.02
2014 2014-10-01 0.02 0 < 0.02
2014 2014-07-08 0.02 0 < 0.02
2014 2014-04-30 0.02 0 < 0.02
2014 2014-04-10 0.02 0 < 0.02
2014 2014-04-10 0.02 0 < 0.02
2014 2014-04-10 0.02 0 < 0.02
2014 2014-04-10 0.02 0 < 0.02
2014 2014-04-10 0.02 0 < 0.02
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.01 0 < 0.01
2014 2014-10-16 0.01 0 < 0.01
2014 2014-10-01 0.01 0 < 0.01
2014 2014-10-01 0.01 0 < 0.01
2014 2014-10-01 0.01 0 < 0.01
2014 2014-10-01 0.01 0 < 0.01
2014 2014-10-01 0.01 0 < 0.01
2014 2014-07-08 0.01 0 < 0.01
2014 2014-04-30 0.01 0 < 0.01
2014 2014-04-10 0.01 0 < 0.01
2014 2014-04-10 0.01 0 < 0.01
2014 2014-04-10 0.01 0 < 0.01
2014 2014-04-10 0.01 0 < 0.01
2014 2014-04-10 0.01 0 < 0.01
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.09 0 < 0.09
2014 2014-10-16 0.09 0 < 0.09
2014 2014-10-01 0.09 0 < 0.09
2014 2014-10-01 0.09 0 < 0.09
2014 2014-10-01 0.09 0 < 0.09
2014 2014-10-01 0.09 0 < 0.09
2014 2014-10-01 0.09 0 < 0.09
2014 2014-07-08 0.09 0 < 0.09
2014 2014-04-30 0.09 0 < 0.09
2014 2014-04-10 0.09 0 < 0.09
2014 2014-04-10 0.09 0 < 0.09
2014 2014-04-10 0.09 0 < 0.09
2014 2014-04-10 0.09 0 < 0.09
2014 2014-04-10 0.09 0 < 0.09
chromium 0.2 100 2.9 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.2 100 < 0.2
2015 2015-01-06 0.2 100 < 0.2
2014 2014-10-16 0.2 100 6.7
2014 2014-10-16 0.2 100 4.1
2014 2014-10-01 0.2 100 5.1
2014 2014-10-01 0.2 100 4.9
2014 2014-10-01 0.2 100 5.1
2014 2014-10-01 0.2 100 4.3
2014 2014-10-01 0.2 100 3.6
2014 2014-10-01 0.2 100 < 0.2
2014 2014-10-01 0.2 100 3.1
2014 2014-10-01 0.2 100 < 0.2
2014 2014-10-01 0.2 100 4
2014 2014-10-01 0.2 100 3.2
2014 2014-07-08 0.2 100 < 0.2
2014 2014-07-08 0.2 100 < 0.2
2014 2014-04-30 0.2 100 6.3
2014 2014-04-30 0.2 100 6.2
2014 2014-04-10 0.2 100 2.7
2014 2014-04-10 0.2 100 3.1
2014 2014-04-10 0.2 100 2.7
2014 2014-04-10 0.2 100 2.6
2014 2014-04-10 0.2 100 2.7
2014 2014-04-10 0.2 100 < 0.2
2014 2014-04-10 0.2 100 2.3
2014 2014-04-10 0.2 100 < 0.2
2014 2014-04-10 0.2 100 6
2014 2014-04-10 0.2 100 2.5
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.04 0.07 < 0.04
2014 2014-10-16 0.04 0.07 < 0.04
2014 2014-10-01 0.04 0.07 < 0.04
2014 2014-10-01 0.04 0.07 < 0.04
2014 2014-10-01 0.04 0.07 < 0.04
2014 2014-10-01 0.04 0.07 < 0.04
2014 2014-10-01 0.04 0.07 < 0.04
2014 2014-07-08 0.04 0.07 < 0.04
2014 2014-04-30 0.04 0.07 < 0.04
2014 2014-04-10 0.04 0.07 < 0.04
2014 2014-04-10 0.04 0.07 < 0.04
2014 2014-04-10 0.04 0.07 < 0.04
2014 2014-04-10 0.04 0.07 < 0.04
2014 2014-04-10 0.04 0.07 < 0.04
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-01-06 0.2 2.69 < 0.2
2014 2014-10-16 0.2 2.69 < 0.2
2014 2014-10-01 0.2 2.69 < 0.2
2014 2014-10-01 0.2 2.69 < 0.2
2014 2014-10-01 0.2 2.69 < 0.2
2014 2014-10-01 0.2 2.69 < 0.2
2014 2014-10-01 0.2 2.69 < 0.2
2014 2014-07-08 0.2 2.69 < 0.2
2014 2014-04-30 0.2 2.69 < 0.2
2014 2014-04-10 0.2 2.69 < 0.2
2014 2014-04-10 0.2 2.69 < 0.2
2014 2014-04-10 0.2 2.69 < 0.2
2014 2014-04-10 0.2 2.69 < 0.2
2014 2014-04-10 0.2 2.69 < 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. Lead and copper can be — and often are — added to drinking water in between the water facility and a tap.

Sample ID Contaminant Sampling Start Date Sampling End Date Result
CA46421 lead 2013-01-01 2015-12-31 0mg/L
191000112166LT5 lead 2012-01-01 2012-12-31 0.0025mg/L
CA38784 lead 2010-01-01 2012-12-31 0.0025mg/L
191000109175LT4 lead 2009-01-01 2009-12-31 0.005mg/L
191000109206LT4 lead 2009-01-01 2009-12-31 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
2009-11-01 - 2009-11-30 Nitrates Maximum Contaminant Level Violation, Single Sample Nitrate Returned to Compliance
1998-08-01 - 1998-09-30 Nitrates Maximum Contaminant Level Violation, Average Nitrate Returned to Compliance

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.