COVID-19 Community Levels Map Update, Jan. 27, 2023: The CDC has listed three Connecticut Counties—Litchfield, Middlesex and New Haven Counties—in the High/Orange category as part of its weekly COVID-19 Community Levels update. Fairfield, Hartford, New London, Tolland and Windham Counties are listed in the Medium/Yellow category.  Because all eight Connecticut counties are either in the High or Medium categories, the Connecticut Department of Public Health recommends that all residents consider wearing a mask in public indoor spaces. People who are at high risk for severe illness should consider additional measures to minimize their exposure to COVID-19 and other respiratory illnesses. Visit the CDC COVID-19 Community Levels Map for updates.


Please visit covidtests.gov to request four free COVID-19 self-test kits from the Federal Government. Find a location that has a supply of COVID-19 therapeutics as part of the Test to Treat initiative here. The complete DPH COVID-19 toolbox is located at ct.gov/coronavirus.

Sodium & Chloride

Sodium and chloride are very common in nature and can occur naturally at low levels in ground water. Sources such as road salt, fertilizers, sewage, water softener discharge and salt water intrusion in coastal environments can increase ground water concentrations significantly. The Maximum Contaminant Level (MCL) for chloride in Connecticut water supplies is 250 milligrams per liter (mg/L) and the notification level for sodium is 28 mg/L. While the chloride MCL is not health based, chloride is typically found with elevated sodium levels. Elevated levels of sodium, coupled with dietary intake, can potentially affect those on a sodium-restricted diet. Additionally, elevated levels of chloride and sodium can increase the corrosivity of the drinking water supply and may affect building plumbing.

The Department of Public Health and the Connecticut Environmental Health Association have established a sodium chloride stakeholder workgroup to help identify and address the increasing presence of these contaminants in drinking water statewide.

Sodium Chloride Stakeholder Workgroup Meeting

June 11, 2019 from 9:00 a.m. to 3:00 p.m
Connecticut Department of Public Health Laboratory
395 West Street, Rocky Hill, Connecticut
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