Hollister, City Of 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: CA3510001
Type: Community water system
EPA Region: 09
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 22,940
Contact Information
GRZAN, MICHAEL
GRZAN, MICHAEL
375 Fifth St.
HOLLISTER, CA 95023
[email protected]

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 2013-11-14 20 210 560
2013 2013-11-14 20 210 860
2013 2013-08-15 20 210 72
2013 2013-08-15 20 210 78
2013 2013-08-15 20 210 66
2013 2013-08-15 20 210 66
2013 2013-08-15 20 210 < 20
2013 2013-08-15 20 210 470
2013 2013-08-15 20 210 550
2013 2013-08-15 20 210 < 20
2013 2013-08-14 20 210 100
2013 2013-08-14 20 210 < 20
2013 2013-08-14 20 210 370
2013 2013-05-30 20 210 100
2013 2013-05-30 20 210 320
2013 2013-02-20 20 210 72
2013 2013-02-20 20 210 270
2013 2013-02-20 20 210 70
2013 2013-02-20 20 210 75
2013 2013-02-20 20 210 < 20
2013 2013-02-20 20 210 270
2013 2013-02-20 20 210 270
2013 2013-02-20 20 210 110
2013 2013-02-20 20 210 110
2013 2013-02-20 20 210 < 20
2013 2013-02-20 20 210 260

1-butanol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 2 0.00 < 2
2018 2018-02-14 2 0.00 < 2
2018 2018-02-14 2 0.00 < 2
2018 2018-02-14 2 0.00 < 2
2018 2018-02-14 2 0.00 < 2
2018 2018-02-14 2 0.00 < 2
2018 2018-02-14 2 0.00 < 2

2-methoxyethanol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.4 0.00 < 0.4
2018 2018-02-14 0.4 0.00 < 0.4
2018 2018-02-14 0.4 0.00 < 0.4
2018 2018-02-14 0.4 0.00 < 0.4
2018 2018-02-14 0.4 0.00 < 0.4
2018 2018-02-14 0.4 0.00 < 0.4
2018 2018-02-14 0.4 0.00 < 0.4

2-propen-1-ol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.5 0.00 < 0.5
2018 2018-02-14 0.5 0.00 < 0.5
2018 2018-02-14 0.5 0.00 < 0.5
2018 2018-02-14 0.5 0.00 < 0.5
2018 2018-02-14 0.5 0.00 < 0.5
2018 2018-02-14 0.5 0.00 < 0.5
2018 2018-02-14 0.5 0.00 < 0.5

germanium

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.3 0.00 < 0.3
2018 2018-02-14 0.3 0.00 < 0.3
2018 2018-02-14 0.3 0.00 < 0.3
2018 2018-02-14 0.3 0.00 < 0.3
2018 2018-02-14 0.3 0.00 0.315
2018 2018-02-14 0.3 0.00 < 0.3
2018 2018-02-14 0.3 0.00 < 0.3

manganese

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.4 0.00 2.54
2018 2018-02-14 0.4 0.00 0.483
2018 2018-02-14 0.4 0.00 2.91
2018 2018-02-14 0.4 0.00 0.678
2018 2018-02-14 0.4 0.00 1.46
2018 2018-02-14 0.4 0.00 0.436
2018 2018-02-14 0.4 0.00 6.17

alpha-hexachlorocyclohexane

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.01 0.00 < 0.01

butylated hydroxyanisole

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.03 0.00 < 0.03
2018 2018-04-26 0.03 0.00 < 0.03
2018 2018-04-26 0.03 0.00 < 0.03

chlorpyrifos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.03 0.00 < 0.03

dimethipin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.2 0.00 < 0.2

ethoprop

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.03 0.00 < 0.03

o-toluidine

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.007 0.00 < 0.007
2018 2018-04-26 0.007 0.00 < 0.007
2018 2018-04-26 0.007 0.00 < 0.007

oxyfluorfen

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.05 0.00 < 0.05

profenofos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.3 0.00 < 0.3

quinoline

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.02 0.00 < 0.02
2018 2018-04-26 0.02 0.00 < 0.02
2018 2018-04-26 0.02 0.00 < 0.02

tebuconazole

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.2 0.00 < 0.2

total permethrin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.04 0.00 < 0.04

tribufos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-05-10 0.07 0.00 < 0.07

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 8.6396 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2016 2016-01-14 0.2 100 0.78
2016 2016-01-14 0.2 100 0.25
2013 2013-11-14 0.2 100 5.9
2013 2013-11-14 0.2 100 0.69
2013 2013-08-15 0.2 100 13
2013 2013-08-15 0.2 100 9.6
2013 2013-08-15 0.2 100 15
2013 2013-08-15 0.2 100 15
2013 2013-08-15 0.2 100 16
2013 2013-08-15 0.2 100 0.28
2013 2013-08-15 0.2 100 0.21
2013 2013-08-15 0.2 100 13
2013 2013-08-14 0.2 100 16
2013 2013-08-14 0.2 100 13
2013 2013-08-14 0.2 100 2
2013 2013-02-20 0.2 100 14
2013 2013-02-20 0.2 100 0.22
2013 2013-02-20 0.2 100 15
2013 2013-02-20 0.2 100 16
2013 2013-02-20 0.2 100 15
2013 2013-02-20 0.2 100 0.23
2013 2013-02-20 0.2 100 0.23
2013 2013-02-20 0.2 100 14
2013 2013-02-20 0.2 100 16
2013 2013-02-20 0.2 100 13
2013 2013-02-20 0.2 100 0.24
chromium-6 0.03 0 9.0908 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.03 0 4.5
2013 2013-11-14 0.03 0 0.42
2013 2013-08-15 0.03 0 14
2013 2013-08-15 0.03 0 8.7
2013 2013-08-15 0.03 0 13
2013 2013-08-15 0.03 0 14
2013 2013-08-15 0.03 0 15
2013 2013-08-15 0.03 0 0.21
2013 2013-08-15 0.03 0 0.18
2013 2013-08-15 0.03 0 11
2013 2013-08-14 0.03 0 15
2013 2013-08-14 0.03 0 12
2013 2013-08-14 0.03 0 2.2
2013 2013-05-30 0.03 0 12
2013 2013-05-30 0.03 0 1.1
2013 2013-02-20 0.03 0 15
2013 2013-02-20 0.03 0 0.45
2013 2013-02-20 0.03 0 17
2013 2013-02-20 0.03 0 18
2013 2013-02-20 0.03 0 16
2013 2013-02-20 0.03 0 0.26
2013 2013-02-20 0.03 0 0.17
2013 2013-02-20 0.03 0 15
2013 2013-02-20 0.03 0 17
2013 2013-02-20 0.03 0 14
2013 2013-02-20 0.03 0 0.17
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2016 2016-01-14 1 70 < 1
2016 2016-01-14 1 70 < 1
2013 2013-11-14 1 70 < 1
2013 2013-11-14 1 70 < 1
2013 2013-08-15 1 70 < 1
2013 2013-08-15 1 70 < 1
2013 2013-08-15 1 70 < 1
2013 2013-08-15 1 70 < 1
2013 2013-08-15 1 70 < 1
2013 2013-08-15 1 70 < 1
2013 2013-08-15 1 70 < 1
2013 2013-08-15 1 70 < 1
2013 2013-08-14 1 70 < 1
2013 2013-08-14 1 70 < 1
2013 2013-08-14 1 70 < 1
2013 2013-02-20 1 70 < 1
2013 2013-02-20 1 70 < 1
2013 2013-02-20 1 70 < 1
2013 2013-02-20 1 70 < 1
2013 2013-02-20 1 70 < 1
2013 2013-02-20 1 70 < 1
2013 2013-02-20 1 70 < 1
2013 2013-02-20 1 70 < 1
2013 2013-02-20 1 70 < 1
2013 2013-02-20 1 70 < 1
2013 2013-02-20 1 70 < 1
molybdenum 1 40 2.7962 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2016 2016-01-14 1 40 1.8
2016 2016-01-14 1 40 1.6
2013 2013-11-14 1 40 2.4
2013 2013-11-14 1 40 1.6
2013 2013-08-15 1 40 3.9
2013 2013-08-15 1 40 1.8
2013 2013-08-15 1 40 3.8
2013 2013-08-15 1 40 3.9
2013 2013-08-15 1 40 2.3
2013 2013-08-15 1 40 1.4
2013 2013-08-15 1 40 1.3
2013 2013-08-15 1 40 3.4
2013 2013-08-14 1 40 3.7
2013 2013-08-14 1 40 4.2
2013 2013-08-14 1 40 1.8
2013 2013-02-20 1 40 4.5
2013 2013-02-20 1 40 1.5
2013 2013-02-20 1 40 4.1
2013 2013-02-20 1 40 4
2013 2013-02-20 1 40 2.5
2013 2013-02-20 1 40 1.5
2013 2013-02-20 1 40 1.5
2013 2013-02-20 1 40 3.6
2013 2013-02-20 1 40 4.1
2013 2013-02-20 1 40 4.5
2013 2013-02-20 1 40 2
strontium 0.3 1500 638.8462 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2016 2016-01-14 0.3 1500 320
2016 2016-01-14 0.3 1500 260
2013 2013-11-14 0.3 1500 530
2013 2013-11-14 0.3 1500 270
2013 2013-08-15 0.3 1500 850
2013 2013-08-15 0.3 1500 1100
2013 2013-08-15 0.3 1500 850
2013 2013-08-15 0.3 1500 870
2013 2013-08-15 0.3 1500 890
2013 2013-08-15 0.3 1500 120
2013 2013-08-15 0.3 1500 120
2013 2013-08-15 0.3 1500 920
2013 2013-08-14 0.3 1500 870
2013 2013-08-14 0.3 1500 860
2013 2013-08-14 0.3 1500 320
2013 2013-02-20 0.3 1500 1000
2013 2013-02-20 0.3 1500 140
2013 2013-02-20 0.3 1500 940
2013 2013-02-20 0.3 1500 1000
2013 2013-02-20 0.3 1500 950
2013 2013-02-20 0.3 1500 140
2013 2013-02-20 0.3 1500 130
2013 2013-02-20 0.3 1500 1000
2013 2013-02-20 0.3 1500 950
2013 2013-02-20 0.3 1500 970
2013 2013-02-20 0.3 1500 240
vanadium 0.2 21 2.5581 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2016 2016-01-14 0.2 21 2.1
2016 2016-01-14 0.2 21 1.7
2013 2013-11-14 0.2 21 3.2
2013 2013-11-14 0.2 21 4.7
2013 2013-08-15 0.2 21 1.9
2013 2013-08-15 0.2 21 4.2
2013 2013-08-15 0.2 21 2
2013 2013-08-15 0.2 21 2
2013 2013-08-15 0.2 21 6.3
2013 2013-08-15 0.2 21 0.48
2013 2013-08-15 0.2 21 0.44
2013 2013-08-15 0.2 21 2.5
2013 2013-08-14 0.2 21 1.9
2013 2013-08-14 0.2 21 2.1
2013 2013-08-14 0.2 21 4.2
2013 2013-02-20 0.2 21 2.3
2013 2013-02-20 0.2 21 0.33
2013 2013-02-20 0.2 21 2.2
2013 2013-02-20 0.2 21 2.5
2013 2013-02-20 0.2 21 7.4
2013 2013-02-20 0.2 21 0.49
2013 2013-02-20 0.2 21 0.57
2013 2013-02-20 0.2 21 2.8
2013 2013-02-20 0.2 21 2.2
2013 2013-02-20 0.2 21 2.2
2013 2013-02-20 0.2 21 3.8
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.03 6.14 < 0.03
2013 2013-09-26 0.03 6.14 < 0.03
2013 2013-09-26 0.03 6.14 < 0.03
2013 2013-09-26 0.03 6.14 < 0.03
2013 2013-08-15 0.03 6.14 < 0.03
2013 2013-08-15 0.03 6.14 < 0.03
2013 2013-08-15 0.03 6.14 < 0.03
2013 2013-08-15 0.03 6.14 < 0.03
2013 2013-05-30 0.03 6.14 < 0.03
2013 2013-02-20 0.03 6.14 < 0.03
2013 2013-02-20 0.03 6.14 < 0.03
2013 2013-02-20 0.03 6.14 < 0.03
2013 2013-02-20 0.03 6.14 < 0.03
2013 2013-02-20 0.03 6.14 < 0.03
2013 2013-02-20 0.03 6.14 < 0.03
2013 2013-02-20 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 2013-11-14 0.03 0.0004 < 0.03
2013 2013-09-26 0.03 0.0004 < 0.03
2013 2013-09-26 0.03 0.0004 < 0.03
2013 2013-09-26 0.03 0.0004 < 0.03
2013 2013-08-15 0.03 0.0004 < 0.03
2013 2013-08-15 0.03 0.0004 < 0.03
2013 2013-08-15 0.03 0.0004 < 0.03
2013 2013-08-15 0.03 0.0004 < 0.03
2013 2013-05-30 0.03 0.0004 < 0.03
2013 2013-02-20 0.03 0.0004 < 0.03
2013 2013-02-20 0.03 0.0004 < 0.03
2013 2013-02-20 0.03 0.0004 < 0.03
2013 2013-02-20 0.03 0.0004 < 0.03
2013 2013-02-20 0.03 0.0004 < 0.03
2013 2013-02-20 0.03 0.0004 < 0.03
2013 2013-02-20 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 2013-11-14 0.1 0.0103 < 0.1
2013 2013-09-26 0.1 0.0103 < 0.1
2013 2013-09-26 0.1 0.0103 < 0.1
2013 2013-09-26 0.1 0.0103 < 0.1
2013 2013-08-15 0.1 0.0103 < 0.1
2013 2013-08-15 0.1 0.0103 < 0.1
2013 2013-08-15 0.1 0.0103 < 0.1
2013 2013-08-15 0.1 0.0103 < 0.1
2013 2013-05-30 0.1 0.0103 < 0.1
2013 2013-02-20 0.1 0.0103 < 0.1
2013 2013-02-20 0.1 0.0103 < 0.1
2013 2013-02-20 0.1 0.0103 < 0.1
2013 2013-02-20 0.1 0.0103 < 0.1
2013 2013-02-20 0.1 0.0103 < 0.1
2013 2013-02-20 0.1 0.0103 < 0.1
2013 2013-02-20 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 2013-11-14 0.07 0.35 < 0.07
2013 2013-08-15 0.07 0.35 < 0.07
2013 2013-08-15 0.07 0.35 < 0.07
2013 2013-08-15 0.07 0.35 < 0.07
2013 2013-08-15 0.07 0.35 < 0.07
2013 2013-08-14 0.07 0.35 < 0.07
2013 2013-08-14 0.07 0.35 < 0.07
2013 2013-08-14 0.07 0.35 < 0.07
2013 2013-05-30 0.07 0.35 < 0.07
2013 2013-02-20 0.07 0.35 < 0.07
2013 2013-02-20 0.07 0.35 < 0.07
2013 2013-02-20 0.07 0.35 < 0.07
2013 2013-02-20 0.07 0.35 < 0.07
2013 2013-02-20 0.07 0.35 < 0.07
2013 2013-02-20 0.07 0.35 < 0.07
2013 2013-02-20 0.07 0.35 < 0.07
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.2 140 < 0.2
2013 2013-09-26 0.2 140 < 0.2
2013 2013-09-26 0.2 140 < 0.2
2013 2013-09-26 0.2 140 < 0.2
2013 2013-08-15 0.2 140 < 0.2
2013 2013-08-15 0.2 140 < 0.2
2013 2013-08-15 0.2 140 < 0.2
2013 2013-08-15 0.2 140 < 0.2
2013 2013-05-30 0.2 140 < 0.2
2013 2013-02-20 0.2 140 < 0.2
2013 2013-02-20 0.2 140 < 0.2
2013 2013-02-20 0.2 140 < 0.2
2013 2013-02-20 0.2 140 < 0.2
2013 2013-02-20 0.2 140 < 0.2
2013 2013-02-20 0.2 140 < 0.2
2013 2013-02-20 0.2 140 < 0.2
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.2 2.69 < 0.2
2013 2013-09-26 0.2 2.69 < 0.2
2013 2013-09-26 0.2 2.69 < 0.2
2013 2013-09-26 0.2 2.69 < 0.2
2013 2013-08-15 0.2 2.69 < 0.2
2013 2013-08-15 0.2 2.69 < 0.2
2013 2013-08-15 0.2 2.69 < 0.2
2013 2013-08-15 0.2 2.69 < 0.2
2013 2013-05-30 0.2 2.69 < 0.2
2013 2013-02-20 0.2 2.69 < 0.2
2013 2013-02-20 0.2 2.69 < 0.2
2013 2013-02-20 0.2 2.69 < 0.2
2013 2013-02-20 0.2 2.69 < 0.2
2013 2013-02-20 0.2 2.69 < 0.2
2013 2013-02-20 0.2 2.69 < 0.2
2013 2013-02-20 0.2 2.69 < 0.2
Halon 1011 0.06 90 0.0061 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.06 90 < 0.06
2013 2013-09-26 0.06 90 < 0.06
2013 2013-09-26 0.06 90 < 0.06
2013 2013-09-26 0.06 90 0.098
2013 2013-08-15 0.06 90 < 0.06
2013 2013-08-15 0.06 90 < 0.06
2013 2013-08-15 0.06 90 < 0.06
2013 2013-08-15 0.06 90 < 0.06
2013 2013-05-30 0.06 90 < 0.06
2013 2013-02-20 0.06 90 < 0.06
2013 2013-02-20 0.06 90 < 0.06
2013 2013-02-20 0.06 90 < 0.06
2013 2013-02-20 0.06 90 < 0.06
2013 2013-02-20 0.06 90 < 0.06
2013 2013-02-20 0.06 90 < 0.06
2013 2013-02-20 0.06 90 < 0.06
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.08 0 < 0.08
2013 2013-09-26 0.08 0 < 0.08
2013 2013-09-26 0.08 0 < 0.08
2013 2013-09-26 0.08 0 < 0.08
2013 2013-08-15 0.08 0 < 0.08
2013 2013-08-15 0.08 0 < 0.08
2013 2013-08-15 0.08 0 < 0.08
2013 2013-08-15 0.08 0 < 0.08
2013 2013-05-30 0.08 0 < 0.08
2013 2013-02-20 0.08 0 < 0.08
2013 2013-02-20 0.08 0 < 0.08
2013 2013-02-20 0.08 0 < 0.08
2013 2013-02-20 0.08 0 < 0.08
2013 2013-02-20 0.08 0 < 0.08
2013 2013-02-20 0.08 0 < 0.08
2013 2013-02-20 0.08 0 < 0.08
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.09 0 < 0.09
2013 2013-08-15 0.09 0 < 0.09
2013 2013-08-15 0.09 0 < 0.09
2013 2013-08-15 0.09 0 < 0.09
2013 2013-08-15 0.09 0 < 0.09
2013 2013-08-14 0.09 0 < 0.09
2013 2013-08-14 0.09 0 < 0.09
2013 2013-08-14 0.09 0 < 0.09
2013 2013-05-30 0.09 0 < 0.09
2013 2013-02-20 0.09 0 < 0.09
2013 2013-02-20 0.09 0 < 0.09
2013 2013-02-20 0.09 0 < 0.09
2013 2013-02-20 0.09 0 < 0.09
2013 2013-02-20 0.09 0 < 0.09
2013 2013-02-20 0.09 0 < 0.09
2013 2013-02-20 0.09 0 < 0.09
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.01 0 < 0.01
2013 2013-08-15 0.01 0 < 0.01
2013 2013-08-15 0.01 0 < 0.01
2013 2013-08-15 0.01 0 < 0.01
2013 2013-08-15 0.01 0 < 0.01
2013 2013-08-14 0.01 0 < 0.01
2013 2013-08-14 0.01 0 < 0.01
2013 2013-08-14 0.01 0 < 0.01
2013 2013-05-30 0.01 0 < 0.01
2013 2013-02-20 0.01 0 < 0.01
2013 2013-02-20 0.01 0 < 0.01
2013 2013-02-20 0.01 0 < 0.01
2013 2013-02-20 0.01 0 < 0.01
2013 2013-02-20 0.01 0 < 0.01
2013 2013-02-20 0.01 0 < 0.01
2013 2013-02-20 0.01 0 < 0.01
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.03 0 < 0.03
2013 2013-08-15 0.03 0 < 0.03
2013 2013-08-15 0.03 0 < 0.03
2013 2013-08-15 0.03 0 < 0.03
2013 2013-08-15 0.03 0 < 0.03
2013 2013-08-14 0.03 0 < 0.03
2013 2013-08-14 0.03 0 < 0.03
2013 2013-08-14 0.03 0 < 0.03
2013 2013-05-30 0.03 0 < 0.03
2013 2013-02-20 0.03 0 < 0.03
2013 2013-02-20 0.03 0 < 0.03
2013 2013-02-20 0.03 0 < 0.03
2013 2013-02-20 0.03 0 < 0.03
2013 2013-02-20 0.03 0 < 0.03
2013 2013-02-20 0.03 0 < 0.03
2013 2013-02-20 0.03 0 < 0.03
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.02 0 < 0.02
2013 2013-08-15 0.02 0 < 0.02
2013 2013-08-15 0.02 0 < 0.02
2013 2013-08-15 0.02 0 < 0.02
2013 2013-08-15 0.02 0 < 0.02
2013 2013-08-14 0.02 0 < 0.02
2013 2013-08-14 0.02 0 < 0.02
2013 2013-08-14 0.02 0 < 0.02
2013 2013-05-30 0.02 0 < 0.02
2013 2013-02-20 0.02 0 < 0.02
2013 2013-02-20 0.02 0 < 0.02
2013 2013-02-20 0.02 0 < 0.02
2013 2013-02-20 0.02 0 < 0.02
2013 2013-02-20 0.02 0 < 0.02
2013 2013-02-20 0.02 0 < 0.02
2013 2013-02-20 0.02 0 < 0.02
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.02 0.07 < 0.02
2013 2013-08-15 0.02 0.07 < 0.02
2013 2013-08-15 0.02 0.07 < 0.02
2013 2013-08-15 0.02 0.07 < 0.02
2013 2013-08-15 0.02 0.07 < 0.02
2013 2013-08-14 0.02 0.07 < 0.02
2013 2013-08-14 0.02 0.07 < 0.02
2013 2013-08-14 0.02 0.07 < 0.02
2013 2013-05-30 0.02 0.07 < 0.02
2013 2013-02-20 0.02 0.07 < 0.02
2013 2013-02-20 0.02 0.07 < 0.02
2013 2013-02-20 0.02 0.07 < 0.02
2013 2013-02-20 0.02 0.07 < 0.02
2013 2013-02-20 0.02 0.07 < 0.02
2013 2013-02-20 0.02 0.07 < 0.02
2013 2013-02-20 0.02 0.07 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-14 0.04 0.07 < 0.04
2013 2013-08-15 0.04 0.07 < 0.04
2013 2013-08-15 0.04 0.07 < 0.04
2013 2013-08-15 0.04 0.07 < 0.04
2013 2013-08-15 0.04 0.07 < 0.04
2013 2013-08-14 0.04 0.07 < 0.04
2013 2013-08-14 0.04 0.07 < 0.04
2013 2013-08-14 0.04 0.07 < 0.04
2013 2013-05-30 0.04 0.07 < 0.04
2013 2013-02-20 0.04 0.07 < 0.04
2013 2013-02-20 0.04 0.07 < 0.04
2013 2013-02-20 0.04 0.07 < 0.04
2013 2013-02-20 0.04 0.07 < 0.04
2013 2013-02-20 0.04 0.07 < 0.04
2013 2013-02-20 0.04 0.07 < 0.04
2013 2013-02-20 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
CA58000 lead 2015-01-01 2017-12-31 0mg/L
CA43282 lead 2012-01-01 2014-12-31 0mg/L
351000111291LT4 lead 2011-01-01 2011-12-31 0.005mg/L
CA37047 lead 2009-01-01 2011-12-31 0mg/L
CA25526 lead 2008-01-01 2010-12-31 0mg/L
351000108248L lead 2008-01-01 2008-12-31 0.005mg/L
351000108282LT4 2008-01-01 2008-12-31 0

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2016-01-01 - 2016-03-31 Stage 2 Disinfectants and Disinfection Byproducts Rule Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
2015-10-01 - 2015-12-31 Stage 2 Disinfectants and Disinfection Byproducts Rule Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
2015-10-01 - 2015-10-31 Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Known
2010-04-01 - 2010-06-30 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2010-01-01 - 2010-03-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2002-01-01 - 2004-12-31 Radionuclides Monitoring, Regular Combined Uranium Returned to Compliance
- 2001-01-01 Volatile Organic Chemicals Monitoring, Regular Benzene Returned to Compliance
- 2001-01-01 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2000-03-01 - 2000-03-31 Total Coliform Rule Monitoring, Repeat Minor (TCR) Coliform (TCR) Known
- N/A Nitrates Maximum Contaminant Level Violation, Single Sample Nitrate Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Benzene Returned to Compliance
- N/A Nitrates Monitoring, Regular Nitrate Returned to Compliance
- N/A Miscellaneous Notification, Public - 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
Bernal Lab LLC Morgan Hill, CA 95037
CM Analytical, Inc. Gilroy, CA 95020

Water Bill Information


Convenient information about your water service.

Unable to identify any billing information about Hollister, City Of (CA3510001).

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.