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Data for Population Being Served by Community Water Systems (CWS) with No Maximum Contaminant Level Violations North Carolina vs. HNC 2020 Target, 2009-2011

North Carolina vs. HNC2020 Year Percentage of Citizens Served by Community Water Systems
North Carolina 2009 92.2%
North Carolina 2010 96.5%
North Carolina 2011 93.8%
HNC 2020 Target 2009 95.0%
HNC 2020 Target 2010 95.0%
HNC 2020 Target 2011 95.0%

Data Notes

The HNC 2020 target, which is the target to be reached by 2020, is repeated in the data table for graphing purposes.


Community water systems are defined as a public water system that supplies water to the same population year-round. Under the Safe Drinking Water Act (SDWA), the Environmental Protection Agency (EPA) sets national limits on contaminant levels in drinking water to ensure that the water is safe for human consumption. These limits are known as Maximum Contaminant Levels (MCLs).

How We Calculated the Rates

Numerator: Number of citizens served by community water systems (CWS) that had no Maximum Contaminant Level (MCL) violations
Denominator: Total number of citizens served by community water systems (CWS)

Date Indicator Content Last Updated: 02/12/2013

State Center for Health Statistics, N.C. Division of Public Health, Telephone: 919-733-4728, Fax: 919-733-8485
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Content updated: Tue, 12 Feb 2013 13:46:49 EST