Public Water System: Ofallon

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: MO6010588
Type: Community water system
EPA Region: 07
Primary Service Area: Municipality
Primary Source: Surface water purchased
Population Served: 27,000
Contact Information
PRATT, MIKE
PRATT, MIKE
401 S COOL SPRINGS ROAD
OFALLON, MO 63376-0000

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   (1) 2014   (1) 2015   (0)
strontium chlorate

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
2014 2014-06-24 20 210 198
2014 2014-06-24 20 210 1350
2014 2014-06-24 20 210 1530
2014 2014-06-04 20 210 < 20
2014 2014-03-31 20 210 597
2014 2014-03-31 20 210 916
2014 2014-03-31 20 210 692
2013 2013-11-20 20 210 < 20
2013 2013-11-20 20 210 < 20
2013 2013-05-22 20 210 < 20
2013 2013-05-22 20 210 < 20
2013 2013-05-22 20 210 < 20

strontium
Is this in your home's pipes?

Year Test Date MRL HRL Test Result
2014 2014-06-04 0.3 1500 362
2013 2013-11-20 0.3 1500 240
2013 2013-11-20 0.3 1500 681
2013 2013-11-20 0.3 1500 59.2
2013 2013-11-20 0.3 1500 67.2
2013 2013-11-20 0.3 1500 1850
2013 2013-05-22 0.3 1500 942
2013 2013-05-22 0.3 1500 92.5
2013 2013-05-22 0.3 1500 128
2013 2013-05-22 0.3 1500 759
2013 2013-05-22 0.3 1500 503
2013 2013-05-22 0.3 1500 1050

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
2013 2013-11-19 0.03 0 < 0.03
2013 2013-11-19 0.03 0 < 0.03
2013 2013-11-19 0.03 0 < 0.03
2013 2013-11-19 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
molybdenum 1 40 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-06-04 1 40 < 1
2013 2013-11-20 1 40 < 1
2013 2013-11-20 1 40 < 1
2013 2013-11-20 1 40 < 1
2013 2013-11-20 1 40 < 1
2013 2013-11-20 1 40 < 1
2013 2013-05-22 1 40 < 1
2013 2013-05-22 1 40 < 1
2013 2013-05-22 1 40 < 1
2013 2013-05-22 1 40 < 1
2013 2013-05-22 1 40 < 1
2013 2013-05-22 1 40 < 1
chromium 0.2 100 0.0175 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-06-04 0.2 100 < 0.2
2013 2013-11-20 0.2 100 < 0.2
2013 2013-11-20 0.2 100 < 0.2
2013 2013-11-20 0.2 100 < 0.2
2013 2013-11-20 0.2 100 < 0.2
2013 2013-11-20 0.2 100 < 0.2
2013 2013-05-22 0.2 100 < 0.2
2013 2013-05-22 0.2 100 < 0.2
2013 2013-05-22 0.2 100 < 0.2
2013 2013-05-22 0.2 100 0.21
2013 2013-05-22 0.2 100 < 0.2
2013 2013-05-22 0.2 100 < 0.2
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-06-04 1 70 < 1
2013 2013-11-20 1 70 < 1
2013 2013-11-20 1 70 < 1
2013 2013-11-20 1 70 < 1
2013 2013-11-20 1 70 < 1
2013 2013-11-20 1 70 < 1
2013 2013-05-22 1 70 < 1
2013 2013-05-22 1 70 < 1
2013 2013-05-22 1 70 < 1
2013 2013-05-22 1 70 < 1
2013 2013-05-22 1 70 < 1
2013 2013-05-22 1 70 < 1
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.07 0.35 < 0.07
2013 2013-11-19 0.07 0.35 < 0.07
2013 2013-11-19 0.07 0.35 < 0.07
2013 2013-11-19 0.07 0.35 < 0.07
2013 2013-07-01 0.07 0.35 < 0.07
2013 2013-05-22 0.07 0.35 < 0.07
2013 2013-05-22 0.07 0.35 < 0.07
2013 2013-05-22 0.07 0.35 < 0.07
2013 2013-05-22 0.07 0.35 < 0.07
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.2 2.69 < 0.2
2013 2013-11-19 0.2 2.69 < 0.2
2013 2013-11-19 0.2 2.69 < 0.2
2013 2013-11-19 0.2 2.69 < 0.2
2013 2013-05-22 0.2 2.69 < 0.2
2013 2013-05-22 0.2 2.69 < 0.2
2013 2013-05-22 0.2 2.69 < 0.2
2013 2013-05-22 0.2 2.69 < 0.2
2013 2013-05-22 0.2 2.69 < 0.2
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.03 6.14 < 0.03
2013 2013-11-19 0.03 6.14 < 0.03
2013 2013-11-19 0.03 6.14 < 0.03
2013 2013-11-19 0.03 6.14 < 0.03
2013 2013-05-22 0.03 6.14 < 0.03
2013 2013-05-22 0.03 6.14 < 0.03
2013 2013-05-22 0.03 6.14 < 0.03
2013 2013-05-22 0.03 6.14 < 0.03
2013 2013-05-22 0.03 6.14 < 0.03
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.02 0.07 < 0.02
2013 2013-11-19 0.02 0.07 < 0.02
2013 2013-11-19 0.02 0.07 < 0.02
2013 2013-11-19 0.02 0.07 < 0.02
2013 2013-05-22 0.02 0.07 < 0.02
2013 2013-05-22 0.02 0.07 < 0.02
2013 2013-05-22 0.02 0.07 < 0.02
2013 2013-05-22 0.02 0.07 < 0.02
2013 2013-05-22 0.02 0.07 < 0.02
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.01 0 < 0.01
2013 2013-11-19 0.01 0 < 0.01
2013 2013-11-19 0.01 0 < 0.01
2013 2013-11-19 0.01 0 < 0.01
2013 2013-05-22 0.01 0 < 0.01
2013 2013-05-22 0.01 0 < 0.01
2013 2013-05-22 0.01 0 < 0.01
2013 2013-05-22 0.01 0 < 0.01
2013 2013-05-22 0.01 0 < 0.01
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.02 0 < 0.02
2013 2013-11-19 0.02 0 < 0.02
2013 2013-11-19 0.02 0 < 0.02
2013 2013-11-19 0.02 0 < 0.02
2013 2013-05-22 0.02 0 < 0.02
2013 2013-05-22 0.02 0 < 0.02
2013 2013-05-22 0.02 0 < 0.02
2013 2013-05-22 0.02 0 < 0.02
2013 2013-05-22 0.02 0 < 0.02
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.09 0 < 0.09
2013 2013-11-19 0.09 0 < 0.09
2013 2013-11-19 0.09 0 < 0.09
2013 2013-11-19 0.09 0 < 0.09
2013 2013-05-22 0.09 0 < 0.09
2013 2013-05-22 0.09 0 < 0.09
2013 2013-05-22 0.09 0 < 0.09
2013 2013-05-22 0.09 0 < 0.09
2013 2013-05-22 0.09 0 < 0.09
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.04 0.07 < 0.04
2013 2013-11-19 0.04 0.07 < 0.04
2013 2013-11-19 0.04 0.07 < 0.04
2013 2013-11-19 0.04 0.07 < 0.04
2013 2013-05-22 0.04 0.07 < 0.04
2013 2013-05-22 0.04 0.07 < 0.04
2013 2013-05-22 0.04 0.07 < 0.04
2013 2013-05-22 0.04 0.07 < 0.04
2013 2013-05-22 0.04 0.07 < 0.04
vanadium 0.2 21 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-06-04 0.2 21 < 0.2
2013 2013-11-20 0.2 21 < 0.2
2013 2013-11-20 0.2 21 < 0.2
2013 2013-11-20 0.2 21 < 0.2
2013 2013-11-20 0.2 21 < 0.2
2013 2013-11-20 0.2 21 < 0.2
2013 2013-05-22 0.2 21 < 0.2
2013 2013-05-22 0.2 21 < 0.2
2013 2013-05-22 0.2 21 < 0.2
2013 2013-05-22 0.2 21 < 0.2
2013 2013-05-22 0.2 21 < 0.2
2013 2013-05-22 0.2 21 < 0.2
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.03 0.0004 < 0.03
2013 2013-11-19 0.03 0.0004 < 0.03
2013 2013-11-19 0.03 0.0004 < 0.03
2013 2013-11-19 0.03 0.0004 < 0.03
2013 2013-05-22 0.03 0.0004 < 0.03
2013 2013-05-22 0.03 0.0004 < 0.03
2013 2013-05-22 0.03 0.0004 < 0.03
2013 2013-05-22 0.03 0.0004 < 0.03
2013 2013-05-22 0.03 0.0004 < 0.03
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.2 140 < 0.2
2013 2013-11-19 0.2 140 < 0.2
2013 2013-11-19 0.2 140 < 0.2
2013 2013-11-19 0.2 140 < 0.2
2013 2013-05-22 0.2 140 < 0.2
2013 2013-05-22 0.2 140 < 0.2
2013 2013-05-22 0.2 140 < 0.2
2013 2013-05-22 0.2 140 < 0.2
2013 2013-05-22 0.2 140 < 0.2
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.08 0 < 0.08
2013 2013-11-19 0.08 0 < 0.08
2013 2013-11-19 0.08 0 < 0.08
2013 2013-11-19 0.08 0 < 0.08
2013 2013-05-22 0.08 0 < 0.08
2013 2013-05-22 0.08 0 < 0.08
2013 2013-05-22 0.08 0 < 0.08
2013 2013-05-22 0.08 0 < 0.08
2013 2013-05-22 0.08 0 < 0.08
chromium-6 0.03 0 0.0028 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-20 0.03 0 < 0.03
2013 2013-11-19 0.03 0 < 0.03
2013 2013-11-19 0.03 0 0.031
2013 2013-11-19 0.03 0 < 0.03
2013 2013-11-19 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
2013 2013-05-22 0.03 0 < 0.03
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.06 90 < 0.06
2013 2013-11-19 0.06 90 < 0.06
2013 2013-11-19 0.06 90 < 0.06
2013 2013-11-19 0.06 90 < 0.06
2013 2013-05-22 0.06 90 < 0.06
2013 2013-05-22 0.06 90 < 0.06
2013 2013-05-22 0.06 90 < 0.06
2013 2013-05-22 0.06 90 < 0.06
2013 2013-05-22 0.06 90 < 0.06
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-11-19 0.1 0.0103 < 0.1
2013 2013-11-19 0.1 0.0103 < 0.1
2013 2013-11-19 0.1 0.0103 < 0.1
2013 2013-11-19 0.1 0.0103 < 0.1
2013 2013-05-22 0.1 0.0103 < 0.1
2013 2013-05-22 0.1 0.0103 < 0.1
2013 2013-05-22 0.1 0.0103 < 0.1
2013 2013-05-22 0.1 0.0103 < 0.1
2013 2013-05-22 0.1 0.0103 < 0.1

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
MO40617 lead 2014-01-01 2016-12-31 0.00262mg/L
MO35451 lead 2011-01-01 2013-12-31 0.00246mg/L
MO30528 lead 2008-01-01 2010-12-31 0.0028mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
1991-06-25 - 1991-07-24 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) 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.