Oswego 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: IL0930150
Type: Community water system
EPA Region: 05
Primary Service Area: Municipality
Primary Source: Ground water
Population Served: 31,400
Contact Information
HUGHES, JENNIFER M.
HUGHES, JENNIFER M.
100 PARKERS MILL
OSWEGO, IL 60543
[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):

2013   (1) 2014   (1) 2015   (0) 2016   (0) 2017   (0) 2018   (0)
strontium strontium

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).

strontium

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2014 2014-01-14 0.3 1500 2279.7
2014 2014-01-14 0.3 1500 2258.7
2014 2014-01-14 0.3 1500 2275.8
2014 2014-01-14 0.3 1500 1766.9
2014 2014-01-14 0.3 1500 2159.9
2014 2014-01-14 0.3 1500 2638.6
2014 2014-01-14 0.3 1500 2304.2
2014 2014-01-14 0.3 1500 2060.7
2014 2014-01-14 0.3 1500 2389.2
2013 2013-07-09 0.3 1500 2034.6
2013 2013-07-09 0.3 1500 1989.5
2013 2013-07-09 0.3 1500 2001.5
2013 2013-07-09 0.3 1500 2141.6
2013 2013-07-09 0.3 1500 2266.4
2013 2013-07-09 0.3 1500 2500.5
2013 2013-07-09 0.3 1500 1949.8
2013 2013-07-09 0.3 1500 2058.7
2013 2013-07-09 0.3 1500 2229.1

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 < 20 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 20 210 < 20
2014 2014-01-14 20 210 < 20
2014 2014-01-14 20 210 < 20
2014 2014-01-14 20 210 < 20
2014 2014-01-14 20 210 < 20
2014 2014-01-14 20 210 < 20
2014 2014-01-14 20 210 < 20
2014 2014-01-14 20 210 < 20
2014 2014-01-14 20 210 < 20
2013 2013-07-09 20 210 < 20
2013 2013-07-09 20 210 < 20
2013 2013-07-09 20 210 < 20
2013 2013-07-09 20 210 < 20
2013 2013-07-09 20 210 < 20
2013 2013-07-09 20 210 < 20
2013 2013-07-09 20 210 < 20
2013 2013-07-09 20 210 < 20
2013 2013-07-09 20 210 < 20
chromium 0.2 100 0.0222 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.2 100 < 0.2
2014 2014-01-14 0.2 100 < 0.2
2014 2014-01-14 0.2 100 < 0.2
2014 2014-01-14 0.2 100 0.2
2014 2014-01-14 0.2 100 < 0.2
2014 2014-01-14 0.2 100 < 0.2
2014 2014-01-14 0.2 100 < 0.2
2014 2014-01-14 0.2 100 < 0.2
2014 2014-01-14 0.2 100 < 0.2
2013 2013-07-09 0.2 100 0.2
2013 2013-07-09 0.2 100 < 0.2
2013 2013-07-09 0.2 100 < 0.2
2013 2013-07-09 0.2 100 < 0.2
2013 2013-07-09 0.2 100 < 0.2
2013 2013-07-09 0.2 100 < 0.2
2013 2013-07-09 0.2 100 < 0.2
2013 2013-07-09 0.2 100 < 0.2
2013 2013-07-09 0.2 100 < 0.2
chromium-6 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 1 70 < 1
2014 2014-01-14 1 70 < 1
2014 2014-01-14 1 70 < 1
2014 2014-01-14 1 70 < 1
2014 2014-01-14 1 70 < 1
2014 2014-01-14 1 70 < 1
2014 2014-01-14 1 70 < 1
2014 2014-01-14 1 70 < 1
2014 2014-01-14 1 70 < 1
2013 2013-07-09 1 70 < 1
2013 2013-07-09 1 70 < 1
2013 2013-07-09 1 70 < 1
2013 2013-07-09 1 70 < 1
2013 2013-07-09 1 70 < 1
2013 2013-07-09 1 70 < 1
2013 2013-07-09 1 70 < 1
2013 2013-07-09 1 70 < 1
2013 2013-07-09 1 70 < 1
molybdenum 1 40 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 1 40 < 1
2014 2014-01-14 1 40 < 1
2014 2014-01-14 1 40 < 1
2014 2014-01-14 1 40 < 1
2014 2014-01-14 1 40 < 1
2014 2014-01-14 1 40 < 1
2014 2014-01-14 1 40 < 1
2014 2014-01-14 1 40 < 1
2014 2014-01-14 1 40 < 1
2013 2013-07-09 1 40 < 1
2013 2013-07-09 1 40 < 1
2013 2013-07-09 1 40 < 1
2013 2013-07-09 1 40 < 1
2013 2013-07-09 1 40 < 1
2013 2013-07-09 1 40 < 1
2013 2013-07-09 1 40 < 1
2013 2013-07-09 1 40 < 1
2013 2013-07-09 1 40 < 1
vanadium 0.2 21 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.2 21 < 0.2
2014 2014-01-14 0.2 21 < 0.2
2014 2014-01-14 0.2 21 < 0.2
2014 2014-01-14 0.2 21 < 0.2
2014 2014-01-14 0.2 21 < 0.2
2014 2014-01-14 0.2 21 < 0.2
2014 2014-01-14 0.2 21 < 0.2
2014 2014-01-14 0.2 21 < 0.2
2014 2014-01-14 0.2 21 < 0.2
2013 2013-07-09 0.2 21 < 0.2
2013 2013-07-09 0.2 21 < 0.2
2013 2013-07-09 0.2 21 < 0.2
2013 2013-07-09 0.2 21 < 0.2
2013 2013-07-09 0.2 21 < 0.2
2013 2013-07-09 0.2 21 < 0.2
2013 2013-07-09 0.2 21 < 0.2
2013 2013-07-09 0.2 21 < 0.2
2013 2013-07-09 0.2 21 < 0.2
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.03 6.14 < 0.03
2014 2014-01-14 0.03 6.14 < 0.03
2014 2014-01-14 0.03 6.14 < 0.03
2014 2014-01-14 0.03 6.14 < 0.03
2014 2014-01-14 0.03 6.14 < 0.03
2014 2014-01-14 0.03 6.14 < 0.03
2014 2014-01-14 0.03 6.14 < 0.03
2014 2014-01-14 0.03 6.14 < 0.03
2013 2013-07-09 0.03 6.14 < 0.03
2013 2013-07-09 0.03 6.14 < 0.03
2013 2013-07-09 0.03 6.14 < 0.03
2013 2013-07-09 0.03 6.14 < 0.03
2013 2013-07-09 0.03 6.14 < 0.03
2013 2013-07-09 0.03 6.14 < 0.03
2013 2013-07-09 0.03 6.14 < 0.03
2013 2013-07-09 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
2014 2014-01-14 0.03 0.0004 < 0.03
2014 2014-01-14 0.03 0.0004 < 0.03
2014 2014-01-14 0.03 0.0004 < 0.03
2014 2014-01-14 0.03 0.0004 < 0.03
2014 2014-01-14 0.03 0.0004 < 0.03
2014 2014-01-14 0.03 0.0004 < 0.03
2014 2014-01-14 0.03 0.0004 < 0.03
2014 2014-01-14 0.03 0.0004 < 0.03
2013 2013-07-09 0.03 0.0004 < 0.03
2013 2013-07-09 0.03 0.0004 < 0.03
2013 2013-07-09 0.03 0.0004 < 0.03
2013 2013-07-09 0.03 0.0004 < 0.03
2013 2013-07-09 0.03 0.0004 < 0.03
2013 2013-07-09 0.03 0.0004 < 0.03
2013 2013-07-09 0.03 0.0004 < 0.03
2013 2013-07-09 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
2014 2014-01-14 0.1 0.0103 < 0.1
2014 2014-01-14 0.1 0.0103 < 0.1
2014 2014-01-14 0.1 0.0103 < 0.1
2014 2014-01-14 0.1 0.0103 < 0.1
2014 2014-01-14 0.1 0.0103 < 0.1
2014 2014-01-14 0.1 0.0103 < 0.1
2014 2014-01-14 0.1 0.0103 < 0.1
2014 2014-01-14 0.1 0.0103 < 0.1
2013 2013-07-09 0.1 0.0103 < 0.1
2013 2013-07-09 0.1 0.0103 < 0.1
2013 2013-07-09 0.1 0.0103 < 0.1
2013 2013-07-09 0.1 0.0103 < 0.1
2013 2013-07-09 0.1 0.0103 < 0.1
2013 2013-07-09 0.1 0.0103 < 0.1
2013 2013-07-09 0.1 0.0103 < 0.1
2013 2013-07-09 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
2014 2014-01-14 0.07 0.35 < 0.07
2014 2014-01-14 0.07 0.35 < 0.07
2014 2014-01-14 0.07 0.35 < 0.07
2014 2014-01-14 0.07 0.35 < 0.07
2014 2014-01-14 0.07 0.35 < 0.07
2014 2014-01-14 0.07 0.35 < 0.07
2014 2014-01-14 0.07 0.35 < 0.07
2014 2014-01-14 0.07 0.35 < 0.07
2013 2013-07-09 0.07 0.35 < 0.07
2013 2013-07-09 0.07 0.35 < 0.07
2013 2013-07-09 0.07 0.35 < 0.07
2013 2013-07-09 0.07 0.35 < 0.07
2013 2013-07-09 0.07 0.35 < 0.07
2013 2013-07-09 0.07 0.35 < 0.07
2013 2013-07-09 0.07 0.35 < 0.07
2013 2013-07-09 0.07 0.35 < 0.07
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.2 140 < 0.2
2014 2014-01-14 0.2 140 < 0.2
2014 2014-01-14 0.2 140 < 0.2
2014 2014-01-14 0.2 140 < 0.2
2014 2014-01-14 0.2 140 < 0.2
2014 2014-01-14 0.2 140 < 0.2
2014 2014-01-14 0.2 140 < 0.2
2014 2014-01-14 0.2 140 < 0.2
2013 2013-07-09 0.2 140 < 0.2
2013 2013-07-09 0.2 140 < 0.2
2013 2013-07-09 0.2 140 < 0.2
2013 2013-07-09 0.2 140 < 0.2
2013 2013-07-09 0.2 140 < 0.2
2013 2013-07-09 0.2 140 < 0.2
2013 2013-07-09 0.2 140 < 0.2
2013 2013-07-09 0.2 140 < 0.2
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.2 2.69 < 0.2
2014 2014-01-14 0.2 2.69 < 0.2
2014 2014-01-14 0.2 2.69 < 0.2
2014 2014-01-14 0.2 2.69 < 0.2
2014 2014-01-14 0.2 2.69 < 0.2
2014 2014-01-14 0.2 2.69 < 0.2
2014 2014-01-14 0.2 2.69 < 0.2
2014 2014-01-14 0.2 2.69 < 0.2
2013 2013-07-09 0.2 2.69 < 0.2
2013 2013-07-09 0.2 2.69 < 0.2
2013 2013-07-09 0.2 2.69 < 0.2
2013 2013-07-09 0.2 2.69 < 0.2
2013 2013-07-09 0.2 2.69 < 0.2
2013 2013-07-09 0.2 2.69 < 0.2
2013 2013-07-09 0.2 2.69 < 0.2
2013 2013-07-09 0.2 2.69 < 0.2
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.06 90 < 0.06
2014 2014-01-14 0.06 90 < 0.06
2014 2014-01-14 0.06 90 < 0.06
2014 2014-01-14 0.06 90 < 0.06
2014 2014-01-14 0.06 90 < 0.06
2014 2014-01-14 0.06 90 < 0.06
2014 2014-01-14 0.06 90 < 0.06
2014 2014-01-14 0.06 90 < 0.06
2013 2013-07-09 0.06 90 < 0.06
2013 2013-07-09 0.06 90 < 0.06
2013 2013-07-09 0.06 90 < 0.06
2013 2013-07-09 0.06 90 < 0.06
2013 2013-07-09 0.06 90 < 0.06
2013 2013-07-09 0.06 90 < 0.06
2013 2013-07-09 0.06 90 < 0.06
2013 2013-07-09 0.06 90 < 0.06
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.08 0 < 0.08
2014 2014-01-14 0.08 0 < 0.08
2014 2014-01-14 0.08 0 < 0.08
2014 2014-01-14 0.08 0 < 0.08
2014 2014-01-14 0.08 0 < 0.08
2014 2014-01-14 0.08 0 < 0.08
2014 2014-01-14 0.08 0 < 0.08
2014 2014-01-14 0.08 0 < 0.08
2013 2013-07-09 0.08 0 < 0.08
2013 2013-07-09 0.08 0 < 0.08
2013 2013-07-09 0.08 0 < 0.08
2013 2013-07-09 0.08 0 < 0.08
2013 2013-07-09 0.08 0 < 0.08
2013 2013-07-09 0.08 0 < 0.08
2013 2013-07-09 0.08 0 < 0.08
2013 2013-07-09 0.08 0 < 0.08
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.09 0 < 0.09
2014 2014-01-14 0.09 0 < 0.09
2014 2014-01-14 0.09 0 < 0.09
2014 2014-01-14 0.09 0 < 0.09
2014 2014-01-14 0.09 0 < 0.09
2014 2014-01-14 0.09 0 < 0.09
2014 2014-01-14 0.09 0 < 0.09
2014 2014-01-14 0.09 0 < 0.09
2013 2013-07-09 0.09 0 < 0.09
2013 2013-07-09 0.09 0 < 0.09
2013 2013-07-09 0.09 0 < 0.09
2013 2013-07-09 0.09 0 < 0.09
2013 2013-07-09 0.09 0 < 0.09
2013 2013-07-09 0.09 0 < 0.09
2013 2013-07-09 0.09 0 < 0.09
2013 2013-07-09 0.09 0 < 0.09
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.01 0 < 0.01
2014 2014-01-14 0.01 0 < 0.01
2014 2014-01-14 0.01 0 < 0.01
2014 2014-01-14 0.01 0 < 0.01
2014 2014-01-14 0.01 0 < 0.01
2014 2014-01-14 0.01 0 < 0.01
2014 2014-01-14 0.01 0 < 0.01
2014 2014-01-14 0.01 0 < 0.01
2013 2013-07-09 0.01 0 < 0.01
2013 2013-07-09 0.01 0 < 0.01
2013 2013-07-09 0.01 0 < 0.01
2013 2013-07-09 0.01 0 < 0.01
2013 2013-07-09 0.01 0 < 0.01
2013 2013-07-09 0.01 0 < 0.01
2013 2013-07-09 0.01 0 < 0.01
2013 2013-07-09 0.01 0 < 0.01
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2014 2014-01-14 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
2013 2013-07-09 0.03 0 < 0.03
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.02 0 < 0.02
2014 2014-01-14 0.02 0 < 0.02
2014 2014-01-14 0.02 0 < 0.02
2014 2014-01-14 0.02 0 < 0.02
2014 2014-01-14 0.02 0 < 0.02
2014 2014-01-14 0.02 0 < 0.02
2014 2014-01-14 0.02 0 < 0.02
2014 2014-01-14 0.02 0 < 0.02
2013 2013-07-09 0.02 0 < 0.02
2013 2013-07-09 0.02 0 < 0.02
2013 2013-07-09 0.02 0 < 0.02
2013 2013-07-09 0.02 0 < 0.02
2013 2013-07-09 0.02 0 < 0.02
2013 2013-07-09 0.02 0 < 0.02
2013 2013-07-09 0.02 0 < 0.02
2013 2013-07-09 0.02 0 < 0.02
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.02 0.07 < 0.02
2014 2014-01-14 0.02 0.07 < 0.02
2014 2014-01-14 0.02 0.07 < 0.02
2014 2014-01-14 0.02 0.07 < 0.02
2014 2014-01-14 0.02 0.07 < 0.02
2014 2014-01-14 0.02 0.07 < 0.02
2014 2014-01-14 0.02 0.07 < 0.02
2014 2014-01-14 0.02 0.07 < 0.02
2013 2013-07-09 0.02 0.07 < 0.02
2013 2013-07-09 0.02 0.07 < 0.02
2013 2013-07-09 0.02 0.07 < 0.02
2013 2013-07-09 0.02 0.07 < 0.02
2013 2013-07-09 0.02 0.07 < 0.02
2013 2013-07-09 0.02 0.07 < 0.02
2013 2013-07-09 0.02 0.07 < 0.02
2013 2013-07-09 0.02 0.07 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-14 0.04 0.07 < 0.04
2014 2014-01-14 0.04 0.07 < 0.04
2014 2014-01-14 0.04 0.07 < 0.04
2014 2014-01-14 0.04 0.07 < 0.04
2014 2014-01-14 0.04 0.07 < 0.04
2014 2014-01-14 0.04 0.07 < 0.04
2014 2014-01-14 0.04 0.07 < 0.04
2014 2014-01-14 0.04 0.07 < 0.04
2013 2013-07-09 0.04 0.07 < 0.04
2013 2013-07-09 0.04 0.07 < 0.04
2013 2013-07-09 0.04 0.07 < 0.04
2013 2013-07-09 0.04 0.07 < 0.04
2013 2013-07-09 0.04 0.07 < 0.04
2013 2013-07-09 0.04 0.07 < 0.04
2013 2013-07-09 0.04 0.07 < 0.04
2013 2013-07-09 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
IL46769 lead 2015-01-01 2017-12-31 0mg/L
IL42774 lead 2012-01-01 2014-12-31 0mg/L
IL40281 lead 2011-01-01 2013-12-31 0mg/L
IL37541 lead 2009-01-01 2011-12-31 0mg/L
IL33615 lead 2008-01-01 2010-12-31 0mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2017-01-01 - 2017-03-31 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Known
2016-07-01 - 2016-09-30 Radionuclides Monitoring, Regular Combined Radium (-226 and -228) Returned to Compliance
2014-04-01 - 2014-06-30 Radionuclides Monitoring, Regular Combined Radium (-226 and -228) Returned to Compliance
2010-04-01 - 2010-06-30 Radionuclides Monitoring, Regular Combined Radium (-226 and -228) Returned to Compliance
2007-01-01 - 2007-03-31 Radionuclides Monitoring, Regular Combined Radium (-226 and -228) Returned to Compliance
2006-07-01 - 2006-09-30 Radionuclides Monitoring, Regular Combined Radium (-226 and -228) Returned to Compliance
2006-04-01 - 2006-06-30 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2006-01-01 - 2006-03-31 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2005-10-01 - 2005-12-31 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2005-07-01 - 2005-09-30 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2005-04-01 - 2005-06-30 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2005-01-01 - 2005-03-31 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2005-01-01 - 2005-03-31 Radionuclides Maximum Contaminant Level Violation, Average Gross Alpha, Excl. Radon and U Returned to Compliance
2004-10-01 - 2004-12-31 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2004-07-01 - 2004-09-30 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2004-08-01 - 2004-08-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
2004-04-01 - 2004-06-30 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2004-01-01 - 2004-03-31 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2003-10-01 - 2003-12-31 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2003-07-01 - 2003-09-30 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2003-04-01 - 2003-06-30 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2003-01-01 - 2003-03-31 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2002-10-01 - 2002-12-31 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
2001-03-31 - 2002-09-30 Radionuclides Maximum Contaminant Level Violation, Average Gross Alpha, Excl. Radon and U Returned to Compliance
- 2002-09-30 Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
- N/A Radionuclides Monitoring, Regular Gross Alpha, Excl. Radon and U Known
- N/A Volatile Organic Chemicals Monitoring, Regular o-Dichlorobenzene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular 1,1,1-Trichloroethane Returned to Compliance
- N/A Radionuclides Monitoring, Regular Gross Alpha, Excl. Radon and U Known
- N/A Volatile Organic Chemicals Monitoring, Regular Ethylbenzene Returned to Compliance
2017-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Inadequate Reporting Consumer Confidence Rule Open
- N/A Volatile Organic Chemicals Monitoring, Regular p-Dichlorobenzene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Styrene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Tetrachloroethylene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Toluene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular trans-1,2-Dichloroethylene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Trichloroethylene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Xylenes, Total Returned to Compliance
2017-05-14 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
- N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
- N/A Radionuclides Monitoring, Regular Combined Radium (-226 and -228) Known
- N/A Volatile Organic Chemicals Monitoring, Regular cis-1,2-Dichloroethylene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular CHLOROBENZENE Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Carbon tetrachloride Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Benzene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloropropane Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloroethane Returned to Compliance
- N/A Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular 1,1-Dichloroethylene Returned to Compliance
- N/A Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Known
- N/A Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
- N/A Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance
- N/A Radionuclides Maximum Contaminant Level Violation, Average Combined Radium (-226 and -228) Returned to Compliance

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
TestAmerica Chicago University Park, IL 60484
First Environmental Laboratories, Inc. Naperville, IL 60563
Gabriel Laboratories, Ltd. Chicago, IL 60642

Water Bill Information


Convenient information about your water service.

Unable to identify any billing information about Oswego (IL0930150).

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.