City Of Redwood City 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: CA4110022
Type: Community water system
EPA Region: 09
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 84,557 		Contact Information
KYAW, TERENCE
KYAW, TERENCE
1400 BROADWAY
REDWOOD CITY, CA 94063
[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).

HAA5

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0 0.00 47.87
2018 2018-06-13 0 0.00 40.4
2018 2018-06-13 0 0.00 47.4
2018 2018-06-13 0 0.00 41.35
2018 2018-06-13 0 0.00 40.3
2018 2018-06-13 0 0.00 49.37
2018 2018-06-13 0 0.00 38.5
2018 2018-06-13 0 0.00 40.9
2018 2018-03-07 0 0.00 25.44
2018 2018-03-07 0 0.00 22.68
2018 2018-03-07 0 0.00 32.03
2018 2018-03-07 0 0.00 28.89
2018 2018-03-07 0 0.00 26.22
2018 2018-03-07 0 0.00 30
2018 2018-03-07 0 0.00 25.23
2018 2018-03-07 0 0.00 26.58

HAA6Br

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0 0.00 0.873
2018 2018-06-13 0 0.00 0.602
2018 2018-06-13 0 0.00 0.712
2018 2018-06-13 0 0.00 0.959
2018 2018-06-13 0 0.00 0.778
2018 2018-06-13 0 0.00 0.895
2018 2018-06-13 0 0.00 0.977
2018 2018-06-13 0 0.00 0.771
2018 2018-03-07 0 0.00 0.708
2018 2018-03-07 0 0.00 0.462
2018 2018-03-07 0 0.00 0.885
2018 2018-03-07 0 0.00 0.599
2018 2018-03-07 0 0.00 0.509
2018 2018-03-07 0 0.00 0.79
2018 2018-03-07 0 0.00 0.536
2018 2018-03-07 0 0.00 0.517

HAA9

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0 0.00 48.743
2018 2018-06-13 0 0.00 41.002
2018 2018-06-13 0 0.00 48.112
2018 2018-06-13 0 0.00 42.309
2018 2018-06-13 0 0.00 41.078
2018 2018-06-13 0 0.00 50.265
2018 2018-06-13 0 0.00 39.477
2018 2018-06-13 0 0.00 41.671
2018 2018-03-07 0 0.00 26.148
2018 2018-03-07 0 0.00 23.142
2018 2018-03-07 0 0.00 32.915
2018 2018-03-07 0 0.00 29.489
2018 2018-03-07 0 0.00 26.729
2018 2018-03-07 0 0.00 30.79
2018 2018-03-07 0 0.00 25.766
2018 2018-03-07 0 0.00 27.097

alpha-hexachlorocyclohexane

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.01 0.00 < 0.01
2018 2018-03-07 0.01 0.00 < 0.01

chlorpyrifos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.03 0.00 < 0.03
2018 2018-03-07 0.03 0.00 < 0.03

dimethipin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.2 0.00 < 0.2
2018 2018-03-07 0.2 0.00 < 0.2

ethoprop

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.03 0.00 < 0.03
2018 2018-03-07 0.03 0.00 < 0.03

germanium

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.3 0.00 < 0.3
2018 2018-03-07 0.3 0.00 < 0.3

manganese

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.4 0.00 1.33
2018 2018-03-07 0.4 0.00 1.95

oxyfluorfen

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.05 0.00 < 0.05
2018 2018-03-07 0.05 0.00 < 0.05

profenofos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.3 0.00 < 0.3
2018 2018-03-07 0.3 0.00 < 0.3

tebuconazole

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.2 0.00 < 0.2
2018 2018-03-07 0.2 0.00 < 0.2

total permethrin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.04 0.00 < 0.04
2018 2018-03-07 0.04 0.00 < 0.04

tribufos

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.07 0.00 < 0.07
2018 2018-03-07 0.07 0.00 < 0.07

1-butanol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 2 0.00 < 2

2-methoxyethanol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.4 0.00 < 0.4

2-propen-1-ol

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.5 0.00 < 0.5

butylated hydroxyanisole

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.03 0.00 < 0.03

o-toluidine

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.007 0.00 < 0.007

quinoline

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-06-13 0.02 0.00 < 0.02

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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
chlorate 20 210 131 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 20 210 94
2015 2015-05-06 20 210 94
2015 2015-02-26 20 210 120
2015 2015-02-26 20 210 130
2014 2014-11-05 20 210 180
2014 2014-11-05 20 210 180
2014 2014-08-06 20 210 120
2014 2014-08-06 20 210 130
[+] Expand Test Data
chromium 0.2 100 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 0.2 100 < 0.2
2015 2015-05-06 0.2 100 < 0.2
2015 2015-02-26 0.2 100 < 0.2
2015 2015-02-26 0.2 100 < 0.2
2014 2014-11-05 0.2 100 < 0.2
2014 2014-11-05 0.2 100 < 0.2
2014 2014-08-06 0.2 100 < 0.2
2014 2014-08-06 0.2 100 < 0.2
[+] Expand Test Data
chromium-6 0.03 0 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 0.03 0 0.04
2015 2015-05-06 0.03 0 0.03
2015 2015-02-26 0.03 0 0.04
2015 2015-02-26 0.03 0 0.05
2014 2014-11-05 0.03 0 0.04
2014 2014-11-05 0.03 0 0.04
2014 2014-08-06 0.03 0 < 0.03
2014 2014-08-06 0.03 0 < 0.03
[+] Expand Test Data
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 1 70 < 1
2015 2015-05-06 1 70 < 1
2015 2015-02-26 1 70 < 1
2015 2015-02-26 1 70 < 1
2014 2014-11-05 1 70 < 1
2014 2014-11-05 1 70 < 1
2014 2014-08-06 1 70 < 1
2014 2014-08-06 1 70 < 1
[+] Expand Test Data
molybdenum 1 40 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 1 40 < 1
2015 2015-05-06 1 40 < 1
2015 2015-02-26 1 40 < 1
2015 2015-02-26 1 40 < 1
2014 2014-11-05 1 40 < 1
2014 2014-11-05 1 40 < 1
2014 2014-08-06 1 40 < 1
2014 2014-08-06 1 40 < 1
[+] Expand Test Data
strontium 0.3 1500 28 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 0.3 1500 15
2015 2015-05-06 0.3 1500 15
2015 2015-02-26 0.3 1500 47
2015 2015-02-26 0.3 1500 45
2014 2014-11-05 0.3 1500 35
2014 2014-11-05 0.3 1500 36
2014 2014-08-06 0.3 1500 15
2014 2014-08-06 0.3 1500 16
[+] Expand Test Data
vanadium 0.2 21 0.125 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 0.2 21 < 0.2
2015 2015-05-06 0.2 21 < 0.2
2015 2015-02-26 0.2 21 0.2
2015 2015-02-26 0.2 21 0.3
2014 2014-11-05 0.2 21 0.2
2014 2014-11-05 0.2 21 0.3
2014 2014-08-06 0.2 21 < 0.2
2014 2014-08-06 0.2 21 < 0.2
[+] Expand Test Data
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 0.07 0.35 < 0.07
2015 2015-02-26 0.07 0.35 < 0.07
2014 2014-11-05 0.07 0.35 < 0.07
2014 2014-08-06 0.07 0.35 < 0.07
[+] Expand Test Data
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 0.09 0 < 0.09
2015 2015-02-26 0.09 0 < 0.09
2014 2014-11-05 0.09 0 < 0.09
2014 2014-08-06 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 2015-05-06 0.01 0 < 0.01
2015 2015-02-26 0.01 0 < 0.01
2014 2014-11-05 0.01 0 < 0.01
2014 2014-08-06 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 2015-05-06 0.03 0 < 0.03
2015 2015-02-26 0.03 0 < 0.03
2014 2014-11-05 0.03 0 < 0.03
2014 2014-08-06 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 2015-05-06 0.02 0 < 0.02
2015 2015-02-26 0.02 0 < 0.02
2014 2014-11-05 0.02 0 < 0.02
2014 2014-08-06 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 2015-05-06 0.02 0.07 < 0.02
2015 2015-02-26 0.02 0.07 < 0.02
2014 2014-11-05 0.02 0.07 < 0.02
2014 2014-08-06 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 2015-05-06 0.04 0.07 < 0.04
2015 2015-02-26 0.04 0.07 < 0.04
2014 2014-11-05 0.04 0.07 < 0.04
2014 2014-08-06 0.04 0.07 < 0.04
[+] Expand Test Data
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 0.03 6.14 < 0.03
2015 2015-02-26 0.03 6.14 < 0.03
2014 2014-11-05 0.03 6.14 < 0.03
2014 2014-09-05 0.03 6.14 < 0.03
[+] Expand Test Data
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 0.03 0.0004 < 0.03
2015 2015-02-26 0.03 0.0004 < 0.03
2014 2014-11-05 0.03 0.0004 < 0.03
2014 2014-09-05 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 2015-05-06 0.1 0.0103 < 0.1
2015 2015-02-26 0.1 0.0103 < 0.1
2014 2014-11-05 0.1 0.0103 < 0.1
2014 2014-09-05 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 2015-05-06 0.2 140 < 0.2
2015 2015-02-26 0.2 140 < 0.2
2014 2014-11-05 0.2 140 < 0.2
2014 2014-09-05 0.2 140 < 0.2
[+] Expand Test Data
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 0.2 2.69 < 0.2
2015 2015-02-26 0.2 2.69 < 0.2
2014 2014-11-05 0.2 2.69 < 0.2
2014 2014-09-05 0.2 2.69 < 0.2
[+] Expand Test Data
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-05-06 0.06 90 < 0.06
2015 2015-02-26 0.06 90 < 0.06
2014 2014-11-05 0.06 90 < 0.06
2014 2014-09-05 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 2015-05-06 0.08 0 < 0.08
2015 2015-02-26 0.08 0 < 0.08
2014 2014-11-05 0.08 0 < 0.08
2014 2014-09-05 0.08 0 < 0.08
[+] 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
CA63994 lead 2016-01-01 2018-12-31 0.0028mg/L
CA56403 lead 2013-01-01 2015-12-31 0.0038mg/L
CA49208 lead 2012-01-01 2014-12-31 0.0038mg/L
411002212163L lead 2012-01-01 2012-12-31 0.00465mg/L
CA38877 lead 2010-01-01 2012-12-31 0.00465mg/L
411002209231LT3 lead 2009-01-01 2009-12-31 0.0039mg/L
411002209266LT3 lead 2009-01-01 2009-12-31 0.0039mg/L

Violations

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

Compliance Dates Rule Violation Type Contaminant Name Status
2015-03-01 - 2015-03-31 Surface Water Treatment Rule Treatment Technique (SWTR and GWR) Surface Water Treatment Rule Returned to Compliance
2014-01-01 - 2014-01-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
2000-04-01 - 2000-04-30 Total Coliform Rule Monitoring, Repeat Minor (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
Dysert Environmental, Inc. San Carlos, CA 94070
Cel Analytical, Inc. San Francisco, CA 94103
Anresco Laboratories San Francisco, CA 94124

Water Bill Information

Convenient information about your water service.

Unable to identify any billing information about City Of Redwood City (CA4110022).

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.