Public Water System: Sioux City Water Supply

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: IA9778054
Type: Community water system
EPA Region: 07
Primary Service Area: Municipality
Primary Source: Groundwater under influence of surface water
Population Served: 82,759
Contact Information
SIOUX CITY WATER SUPPLY
SIOUX CITY WATER SUPPLY
ATTN BRAD PUETZ WATER SUPT
1101 TRI VIEW AVE
SIOUX CITY, IA 51103

This public water system services 1 zip code 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   (2) 2015   (2)
chlorate
1,4-dioxane
chlorate
1,4-dioxane

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 2015-09-29 20 210 1130
2015 2015-09-29 20 210 23.1
2015 2015-09-29 20 210 62
2015 2015-09-29 20 210 24.1
2015 2015-06-02 20 210 < 20
2015 2015-06-02 20 210 105
2015 2015-06-02 20 210 < 20
2015 2015-06-01 20 210 324
2015 2015-03-30 20 210 259
2015 2015-03-30 20 210 < 20
2015 2015-03-30 20 210 85.3
2015 2015-03-30 20 210 < 20
2014 2014-12-22 20 210 425
2014 2014-12-22 20 210 401
2014 2014-12-02 20 210 < 20
2014 2014-12-02 20 210 < 20

1,4-dioxane
Is this in your home's pipes?

Year Test Date MRL HRL Test Result
2015 2015-09-29 0.07 0.35 0.13
2015 2015-09-29 0.07 0.35 < 0.07
2015 2015-06-01 0.07 0.35 0.476
2015 2015-06-01 0.07 0.35 < 0.07
2015 2015-03-30 0.07 0.35 < 0.07
2015 2015-03-30 0.07 0.35 0.728
2014 2014-12-31 0.07 0.35 < 0.07
2014 2014-12-02 0.07 0.35 0.464

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
strontium 0.3 1500 927.2857 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.3 1500 1340
2015 2015-09-29 0.3 1500 892
2015 2015-09-29 0.3 1500 836
2015 2015-09-29 0.3 1500 860
2015 2015-06-02 0.3 1500 778
2015 2015-06-02 0.3 1500 968
2015 2015-06-02 0.3 1500 686
2015 2015-06-01 0.3 1500 1320
2015 2015-03-30 0.3 1500 1340
2015 2015-03-30 0.3 1500 776
2015 2015-03-30 0.3 1500 840
2015 2015-03-30 0.3 1500 1080
2014 2014-12-02 0.3 1500 621
2014 2014-12-02 0.3 1500 645
chromium-6 0.03 0 0.0384 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.03 0 0.097
2015 2015-09-29 0.03 0 < 0.03
2015 2015-09-29 0.03 0 < 0.03
2015 2015-09-29 0.03 0 < 0.03
2015 2015-06-02 0.03 0 0.05
2015 2015-06-02 0.03 0 0.05
2015 2015-06-02 0.03 0 0.06
2015 2015-06-01 0.03 0 0.09
2015 2015-03-30 0.03 0 0.056
2015 2015-03-30 0.03 0 < 0.03
2015 2015-03-30 0.03 0 < 0.03
2015 2015-03-30 0.03 0 < 0.03
2014 2014-12-22 0.03 0 0.106
2014 2014-12-22 0.03 0 0.105
2014 2014-12-02 0.03 0 < 0.03
2014 2014-12-02 0.03 0 < 0.03
cobalt 1 70 0.0786 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 1 70 < 1
2015 2015-09-29 1 70 < 1
2015 2015-09-29 1 70 < 1
2015 2015-09-29 1 70 < 1
2015 2015-06-02 1 70 < 1
2015 2015-06-02 1 70 < 1
2015 2015-06-02 1 70 < 1
2015 2015-06-01 1 70 < 1
2015 2015-03-30 1 70 1.1
2015 2015-03-30 1 70 < 1
2015 2015-03-30 1 70 < 1
2015 2015-03-30 1 70 < 1
2014 2014-12-02 1 70 < 1
2014 2014-12-02 1 70 < 1
molybdenum 1 40 2.6357 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 1 40 2.5
2015 2015-09-29 1 40 3.7
2015 2015-09-29 1 40 4.1
2015 2015-09-29 1 40 3.8
2015 2015-06-02 1 40 2.1
2015 2015-06-02 1 40 1.7
2015 2015-06-02 1 40 2.2
2015 2015-06-01 1 40 < 1
2015 2015-03-30 1 40 2.6
2015 2015-03-30 1 40 2.8
2015 2015-03-30 1 40 2.7
2015 2015-03-30 1 40 2.8
2014 2014-12-02 1 40 2.8
2014 2014-12-02 1 40 3.1
vanadium 0.2 21 0.3643 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.2 21 < 0.2
2015 2015-09-29 0.2 21 0.9
2015 2015-09-29 0.2 21 0.2
2015 2015-09-29 0.2 21 < 0.2
2015 2015-06-02 0.2 21 0.7
2015 2015-06-02 0.2 21 0.6
2015 2015-06-02 0.2 21 0.7
2015 2015-06-01 0.2 21 < 0.2
2015 2015-03-30 0.2 21 < 0.2
2015 2015-03-30 0.2 21 0.4
2015 2015-03-30 0.2 21 0.5
2015 2015-03-30 0.2 21 0.3
2014 2014-12-02 0.2 21 0.4
2014 2014-12-02 0.2 21 0.4
chromium 0.2 100 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.2 100 0.3
2015 2015-09-29 0.2 100 < 0.2
2015 2015-09-29 0.2 100 0.2
2015 2015-09-29 0.2 100 0.2
2015 2015-06-02 0.2 100 < 0.2
2015 2015-06-02 0.2 100 < 0.2
2015 2015-06-02 0.2 100 < 0.2
2015 2015-06-01 0.2 100 < 0.2
2015 2015-03-30 0.2 100 < 0.2
2015 2015-03-30 0.2 100 0.2
2015 2015-03-30 0.2 100 0.3
2015 2015-03-30 0.2 100 0.2
2014 2014-12-02 0.2 100 < 0.2
2014 2014-12-02 0.2 100 < 0.2
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.2 2.69 < 0.2
2015 2015-09-29 0.2 2.69 < 0.2
2015 2015-06-01 0.2 2.69 < 0.2
2015 2015-06-01 0.2 2.69 < 0.2
2015 2015-03-30 0.2 2.69 < 0.2
2015 2015-03-30 0.2 2.69 < 0.2
2014 2014-12-22 0.2 2.69 < 0.2
2014 2014-12-02 0.2 2.69 < 0.2
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.02 0 < 0.02
2015 2015-09-29 0.02 0 < 0.02
2015 2015-08-11 0.02 0 < 0.02
2015 2015-06-01 0.02 0 < 0.02
2015 2015-06-01 0.02 0 < 0.02
2015 2015-03-30 0.02 0 < 0.02
2014 2014-12-31 0.02 0 < 0.02
2014 2014-12-02 0.02 0 < 0.02
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.02 0.07 < 0.02
2015 2015-09-29 0.02 0.07 < 0.02
2015 2015-08-11 0.02 0.07 < 0.02
2015 2015-06-01 0.02 0.07 < 0.02
2015 2015-06-01 0.02 0.07 < 0.02
2015 2015-03-30 0.02 0.07 < 0.02
2014 2014-12-31 0.02 0.07 < 0.02
2014 2014-12-02 0.02 0.07 < 0.02
1,1-dichloroethane 0.03 6.14 0.1332 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.03 6.14 0.0603
2015 2015-09-29 0.03 6.14 < 0.03
2015 2015-06-01 0.03 6.14 0.203
2015 2015-06-01 0.03 6.14 < 0.03
2015 2015-03-30 0.03 6.14 < 0.03
2015 2015-03-30 0.03 6.14 0.464
2014 2014-12-22 0.03 6.14 < 0.03
2014 2014-12-02 0.03 6.14 0.338
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.1 0.0103 < 0.1
2015 2015-09-29 0.1 0.0103 < 0.1
2015 2015-06-01 0.1 0.0103 < 0.1
2015 2015-06-01 0.1 0.0103 < 0.1
2015 2015-03-30 0.1 0.0103 < 0.1
2015 2015-03-30 0.1 0.0103 < 0.1
2014 2014-12-22 0.1 0.0103 < 0.1
2014 2014-12-02 0.1 0.0103 < 0.1
HCFC-22 0.08 0 0.0247 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.08 0 < 0.08
2015 2015-09-29 0.08 0 < 0.08
2015 2015-06-01 0.08 0 0.0872
2015 2015-06-01 0.08 0 < 0.08
2015 2015-03-30 0.08 0 < 0.08
2015 2015-03-30 0.08 0 0.11
2014 2014-12-22 0.08 0 < 0.08
2014 2014-12-02 0.08 0 < 0.08
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.09 0 < 0.09
2015 2015-09-29 0.09 0 < 0.09
2015 2015-08-11 0.09 0 < 0.09
2015 2015-06-01 0.09 0 < 0.09
2015 2015-06-01 0.09 0 < 0.09
2015 2015-03-30 0.09 0 < 0.09
2014 2014-12-31 0.09 0 < 0.09
2014 2014-12-02 0.09 0 < 0.09
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.2 140 < 0.2
2015 2015-09-29 0.2 140 < 0.2
2015 2015-06-01 0.2 140 < 0.2
2015 2015-06-01 0.2 140 < 0.2
2015 2015-03-30 0.2 140 < 0.2
2015 2015-03-30 0.2 140 < 0.2
2014 2014-12-22 0.2 140 < 0.2
2014 2014-12-02 0.2 140 < 0.2
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.06 90 < 0.06
2015 2015-09-29 0.06 90 < 0.06
2015 2015-06-01 0.06 90 < 0.06
2015 2015-06-01 0.06 90 < 0.06
2015 2015-03-30 0.06 90 < 0.06
2015 2015-03-30 0.06 90 < 0.06
2014 2014-12-22 0.06 90 < 0.06
2014 2014-12-02 0.06 90 < 0.06
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.03 0 < 0.03
2015 2015-09-29 0.03 0 < 0.03
2015 2015-08-11 0.03 0 < 0.03
2015 2015-06-01 0.03 0 < 0.03
2015 2015-06-01 0.03 0 < 0.03
2015 2015-03-30 0.03 0 < 0.03
2014 2014-12-31 0.03 0 < 0.03
2014 2014-12-02 0.03 0 < 0.03
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.03 0.0004 < 0.03
2015 2015-09-29 0.03 0.0004 < 0.03
2015 2015-06-01 0.03 0.0004 < 0.03
2015 2015-06-01 0.03 0.0004 < 0.03
2015 2015-03-30 0.03 0.0004 < 0.03
2015 2015-03-30 0.03 0.0004 < 0.03
2014 2014-12-22 0.03 0.0004 < 0.03
2014 2014-12-02 0.03 0.0004 < 0.03
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.01 0 < 0.01
2015 2015-09-29 0.01 0 < 0.01
2015 2015-08-11 0.01 0 < 0.01
2015 2015-06-01 0.01 0 < 0.01
2015 2015-06-01 0.01 0 < 0.01
2015 2015-03-30 0.01 0 < 0.01
2014 2014-12-31 0.01 0 < 0.01
2014 2014-12-02 0.01 0 < 0.01
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-09-29 0.04 0.07 < 0.04
2015 2015-09-29 0.04 0.07 < 0.04
2015 2015-08-11 0.04 0.07 < 0.04
2015 2015-06-01 0.04 0.07 < 0.04
2015 2015-06-01 0.04 0.07 < 0.04
2015 2015-03-30 0.04 0.07 < 0.04
2014 2014-12-31 0.04 0.07 < 0.04
2014 2014-12-02 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. 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
IA42543 lead 2017-01-01 2017-06-30 0.005mg/L
IA42310 lead 2016-07-01 2016-12-31 0.002mg/L
IA39560 2011-01-01 2013-12-31 0
IA36748 lead 2008-01-01 2010-12-31 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
2015-05-01 - 2015-05-31 Long Term 1 Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Interim Enhanced Surfsce Water Treatment Rule Returned to Compliance
2012-07-01 - 2012-07-31 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Returned to Compliance
2012-06-01 - 2012-06-30 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Returned to Compliance
2012-04-01 - 2012-04-30 Surface Water Treatment Rule Treatment Technique (SWTR and GWR) Surface Water Treatment Rule Returned to Compliance
2007-07-01 - 2008-06-30 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2004-11-01 - 2004-11-30 Long Term 1 Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Interim Enhanced Surfsce Water Treatment Rule Returned to Compliance
2004-04-01 - 2004-04-30 Long Term 1 Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Interim Enhanced Surfsce Water Treatment Rule Returned to Compliance
2004-03-01 - 2004-03-31 Surface Water Treatment Rule Treatment Technique (SWTR and GWR) Surface Water Treatment Rule Returned to Compliance
2003-01-01 - 2003-12-31 Miscellaneous Variance/Exemption/Other Compliance - Returned to Compliance
2002-01-01 - 2002-12-31 Miscellaneous Variance/Exemption/Other Compliance - Returned to Compliance
2001-07-01 - 2002-06-30 Arsenic Monitoring, Regular Arsenic Returned to Compliance
2001-07-01 - 2002-06-30 Inorganic Chemicals Monitoring, Regular Barium Returned to Compliance
2001-07-01 - 2002-06-30 Inorganic Chemicals Monitoring, Regular Cadmium Returned to Compliance
2001-07-01 - 2002-06-30 Inorganic Chemicals Monitoring, Regular Chromium Returned to Compliance
2001-07-01 - 2002-06-30 Inorganic Chemicals Monitoring, Regular Fluoride Returned to Compliance
2001-07-01 - 2002-06-30 Inorganic Chemicals Monitoring, Regular Mercury Returned to Compliance
2001-07-01 - 2002-06-30 Inorganic Chemicals Monitoring, Regular Antimony, Total Returned to Compliance
2001-07-01 - 2002-06-30 Inorganic Chemicals Monitoring, Regular Thallium, Total Returned to Compliance
2001-07-01 - 2002-06-30 Inorganic Chemicals Monitoring, Regular Selenium Returned to Compliance
2001-01-01 - 2001-12-31 Miscellaneous Variance/Exemption/Other Compliance - Returned to Compliance
1999-05-01 - 1999-11-15 Miscellaneous Variance/Exemption/Other Compliance - Returned to Compliance
1997-08-01 - 1997-08-31 Total Coliform Rule Maximum Contaminant Level Violation, Acute (TCR) Coliform (TCR) Returned to Compliance
1993-04-01 - 1997-03-31 Radionuclides Monitoring, Regular Gross Alpha, Excl. Radon and U Returned to Compliance
1996-06-01 - 1996-06-30 Total Coliform Rule Maximum Contaminant Level Violation, Acute (TCR) Coliform (TCR) Returned to Compliance
1991-06-01 - 1991-06-30 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
1979-07-24 - 1980-10-23 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Known
1979-07-24 - 1980-07-23 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Known

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.