The Power of Information

National Drinking Water Database

City of Norfolk Utilities - Norfolk, NE

Serves 24,000 people


1,1-Dichloroethane is used in industrial chemical synthesis, as a solvent for plastics, paint, varnish, and finish removers and as an insecticide/fumigant.
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
0 days
Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)
0 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
65 days
Tests ConductedNumber of individual tests done for this contaminant
167 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
1,1-Dichloroethane1,1-Dichloroethane is used in industrial chemical synthesis, as a solvent for plastics, paint, varnish, and finish removers and as an insecticide/fumigant.0 ppb
0 ppb
3 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Health Based and Legal Limits for 1,1-Dichloroethane

Health Based Limits for 1,1-Dichloroethane

California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.3 ppb

Testing Results

Testing DateAverage
Samples taken that dayNumber of Non-DetectsRange of Results
2008-12-090 ppb330 ppb
2008-11-180 ppb330 ppb
2008-10-080 ppb330 ppb
2008-09-100 ppb330 ppb
2008-08-050 ppb330 ppb
2008-07-210 ppb12120 ppb
2008-06-160 ppb330 ppb
2008-05-120 ppb330 ppb
2008-04-210 ppb330 ppb
2008-04-020 ppb330 ppb
2008-03-100 ppb330 ppb
2008-02-050 ppb330 ppb
2008-01-140 ppb330 ppb
2007-12-100 ppb330 ppb
2007-11-260 ppb330 ppb
2007-10-030 ppb330 ppb
2007-09-040 ppb330 ppb
2007-08-060 ppb330 ppb
2007-07-250 ppb330 ppb
2007-07-160 ppb660 ppb
2007-06-110 ppb330 ppb
2007-05-070 ppb330 ppb
2007-04-020 ppb330 ppb
2007-03-270 ppb330 ppb
2007-02-130 ppb330 ppb
2007-01-080 ppb330 ppb
2006-12-050 ppb330 ppb
2006-11-130 ppb330 ppb
2006-10-100 ppb330 ppb
2006-09-120 ppb330 ppb
2006-08-070 ppb330 ppb
2006-07-190 ppb660 ppb
2006-07-180 ppb330 ppb
2006-07-100 ppb330 ppb
2006-06-050 ppb330 ppb
2006-05-090 ppb660 ppb
2006-04-040 ppb330 ppb
2006-03-060 ppb330 ppb
2006-02-070 ppb330 ppb
2006-01-100 ppb330 ppb
2005-12-050 ppb110 ppb
2005-11-020 ppb110 ppb
2005-10-110 ppb110 ppb
2005-09-060 ppb110 ppb
2005-08-010 ppb110 ppb
2005-07-180 ppb330 ppb
2005-07-050 ppb110 ppb
2005-06-060 ppb110 ppb
2005-05-090 ppb110 ppb
2005-04-180 ppb110 ppb
2005-04-110 ppb110 ppb
2005-03-140 ppb110 ppb
2005-02-010 ppb110 ppb
2005-01-030 ppb110 ppb
2004-12-060 ppb110 ppb
2004-10-050 ppb110 ppb
2004-09-070 ppb110 ppb
2004-08-090 ppb110 ppb
2004-07-200 ppb330 ppb
2004-07-060 ppb110 ppb
2004-06-010 ppb110 ppb
2004-04-050 ppb110 ppb
2004-03-020 ppb110 ppb
2004-02-020 ppb110 ppb
2004-01-050 ppb110 ppb