Public Water System: Rock Island

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: IL1610650
Type: Community water system
EPA Region: 05
Primary Service Area: Municipality
Primary Source: Surface water
Population Served: 39,684
Contact Information
COOK, LARRY P.
COOK, LARRY P.
1309 MILL STREET
ROCK ISLAND, IL 61201

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   (1) 2015   (0)
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).

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

Year Test Date MRL HRL Test Result
2014 2014-10-22 0.07 0.35 0.15603
2014 2014-07-15 0.07 0.35 < 0.07
2014 2014-04-16 0.07 0.35 0.41884
2014 2014-01-14 0.07 0.35 < 0.07

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
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.03 0 < 0.03
2014 2014-07-22 0.03 0 < 0.03
2014 2014-04-16 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.03 6.14 < 0.03
2014 2014-07-15 0.03 6.14 < 0.03
2014 2014-04-16 0.03 6.14 < 0.03
2014 2014-01-14 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
2014 2014-10-22 0.1 0.0103 < 0.1
2014 2014-07-15 0.1 0.0103 < 0.1
2014 2014-04-16 0.1 0.0103 < 0.1
2014 2014-01-14 0.1 0.0103 < 0.1
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.06 90 < 0.06
2014 2014-07-15 0.06 90 < 0.06
2014 2014-04-16 0.06 90 < 0.06
2014 2014-01-14 0.06 90 < 0.06
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.03 0.0004 < 0.03
2014 2014-07-15 0.03 0.0004 < 0.03
2014 2014-04-16 0.03 0.0004 < 0.03
2014 2014-01-14 0.03 0.0004 < 0.03
chromium-6 0.03 0 0.1385 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.03 0 0.244
2014 2014-10-22 0.03 0 0.072
2014 2014-07-22 0.03 0 0.072
2014 2014-07-15 0.03 0 0.178
2014 2014-04-16 0.03 0 0.175
2014 2014-04-16 0.03 0 0.055
2014 2014-01-21 0.03 0 0.089
2014 2014-01-14 0.03 0 0.223
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.02 0 < 0.02
2014 2014-07-22 0.02 0 < 0.02
2014 2014-04-16 0.02 0 < 0.02
2014 2014-01-14 0.02 0 < 0.02
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.01 0 < 0.01
2014 2014-07-22 0.01 0 < 0.01
2014 2014-04-16 0.01 0 < 0.01
2014 2014-01-14 0.01 0 < 0.01
chlorate 20 210 68.716 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 20 210 78.245
2014 2014-10-22 20 210 85.29
2014 2014-07-22 20 210 88.379
2014 2014-07-15 20 210 93.993
2014 2014-04-16 20 210 63.764
2014 2014-04-16 20 210 58.725
2014 2014-01-14 20 210 33.54
2014 2014-01-14 20 210 47.792
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.09 0 < 0.09
2014 2014-07-22 0.09 0 < 0.09
2014 2014-04-16 0.09 0 < 0.09
2014 2014-01-14 0.09 0 < 0.09
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.02 0.07 < 0.02
2014 2014-07-22 0.02 0.07 < 0.02
2014 2014-04-16 0.02 0.07 < 0.02
2014 2014-01-14 0.02 0.07 < 0.02
chromium 0.2 100 0.1385 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.2 100 0.374
2014 2014-10-22 0.2 100 < 0.2
2014 2014-07-15 0.2 100 0.269
2014 2014-07-15 0.2 100 < 0.2
2014 2014-04-16 0.2 100 0.22
2014 2014-04-16 0.2 100 < 0.2
2014 2014-01-14 0.2 100 < 0.2
2014 2014-01-14 0.2 100 0.245
strontium 0.3 1500 84.0598 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.3 1500 79.39
2014 2014-10-22 0.3 1500 75.346
2014 2014-07-15 0.3 1500 99.405
2014 2014-07-15 0.3 1500 111.575
2014 2014-04-16 0.3 1500 72.691
2014 2014-04-16 0.3 1500 70.386
2014 2014-01-14 0.3 1500 80.732
2014 2014-01-14 0.3 1500 82.953
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 1 70 < 1
2014 2014-10-22 1 70 < 1
2014 2014-07-15 1 70 < 1
2014 2014-07-15 1 70 < 1
2014 2014-04-16 1 70 < 1
2014 2014-04-16 1 70 < 1
2014 2014-01-14 1 70 < 1
2014 2014-01-14 1 70 < 1
molybdenum 1 40 0.3931 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 1 40 < 1
2014 2014-10-22 1 40 < 1
2014 2014-07-15 1 40 1.427
2014 2014-07-15 1 40 1.718
2014 2014-04-16 1 40 < 1
2014 2014-04-16 1 40 < 1
2014 2014-01-14 1 40 < 1
2014 2014-01-14 1 40 < 1
vanadium 0.2 21 0.7748 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.2 21 1.04
2014 2014-10-22 0.2 21 0.759
2014 2014-07-15 0.2 21 1.413
2014 2014-07-15 0.2 21 1.53
2014 2014-04-16 0.2 21 0.408
2014 2014-04-16 0.2 21 0.404
2014 2014-01-14 0.2 21 0.255
2014 2014-01-14 0.2 21 0.389
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.08 0 < 0.08
2014 2014-07-15 0.08 0 < 0.08
2014 2014-04-16 0.08 0 < 0.08
2014 2014-01-14 0.08 0 < 0.08
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.2 140 < 0.2
2014 2014-07-15 0.2 140 < 0.2
2014 2014-04-16 0.2 140 < 0.2
2014 2014-01-14 0.2 140 < 0.2
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.04 0.07 < 0.04
2014 2014-07-22 0.04 0.07 < 0.04
2014 2014-04-16 0.04 0.07 < 0.04
2014 2014-01-14 0.04 0.07 < 0.04
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-22 0.2 2.69 < 0.2
2014 2014-07-15 0.2 2.69 < 0.2
2014 2014-04-16 0.2 2.69 < 0.2
2014 2014-01-14 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
IL47192 lead 2015-01-01 2017-12-31 0.0014mg/L
IL43152 lead 2012-01-01 2014-12-31 0.0015mg/L
IL40359 lead 2011-01-01 2013-12-31 0.0047mg/L
IL38370 lead 2009-01-01 2011-12-31 0.0047mg/L
IL33969 lead 2008-01-01 2010-12-31 0.0049mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2007-08-01 - 2007-08-31 Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Returned to Compliance
2006-07-01 - 2006-07-31 Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Returned to Compliance
1997-07-01 - 1997-07-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Known
1997-06-01 - 1997-06-30 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Known
1993-10-01 - 1993-10-31 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Known
1993-09-01 - 1993-09-30 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Known
1993-08-01 - 1993-08-31 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Known
1988-08-01 - 1989-07-31 Total Trihalomethanes Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
1987-08-01 - 1988-07-31 Total Trihalomethanes Maximum Contaminant Level Violation, Average TTHM Known
1986-08-14 - 1987-08-13 Total Trihalomethanes Maximum Contaminant Level Violation, Average TTHM Known
1977-06-30 - 1981-06-29 Radionuclides Monitoring, Regular Gross Alpha, Excl. Radon and U 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.