Mecklenburg County, North Carolina: drinking water report. Mecklenburg County – Charlotte and its suburbs – serves about 1.1 million residents.
Mecklenburg County – Charlotte and its suburbs – serves about 1.1 million residents. Charlotte Water draws from Mountain Island Lake and Lake Norman, both reservoirs on the Catawba River managed by Duke Energy. The Catawba River system supplies water to multiple counties in both North and South Carolina, making it one of the most heavily utilized river systems in the southeastern United States.
Charlotte Water has maintained consistently good compliance records, and the Catawba River reservoirs provide cleaner source water than many river-intake systems. UCMR5 data shows low-level PFAS detections in the Charlotte Water system. There are no major military installations in Mecklenburg County, so PFAS sources are primarily diffuse – consumer products, wastewater effluent, and stormwater.
The bigger environmental water quality story in the Charlotte area involves coal ash. Duke Energy's retired coal plants left massive ash ponds along the Catawba River, including the former Riverbend Steam Station on Mountain Island Lake. According to the North Carolina Department of Environmental Quality, coal ash contains heavy metals including arsenic, selenium, and hexavalent chromium. While Duke Energy has been ordered to excavate ash from several sites, the cleanup timeline extends years into the future.
Charlotte Water meets federal standards, but the proximity of coal ash sites to drinking water reservoirs is a long-term concern worth tracking.
Check your water for current monitoring data in your area. An activated carbon filter handles taste and disinfection byproducts, while reverse osmosis addresses a broader range including PFAS and heavy metals. Our water filter guide helps you choose. Pull your detailed report for trends, and visit our North Carolina page for statewide data.
Drinking water is one exposure route. These federal datasets also cover Mecklenburg County, NC.
The EPA places Mecklenburg County, NC in Zone 3 - the EPA's lowest-risk category, with a predicted average indoor radon level below 2 pCi/L. Zone maps predict an area's radon potential from geology and existing indoor readings; they say nothing about a specific house. Testing is the only way to know your own level.
27% of homes in Mecklenburg County, NC were built before 1980, and 4% before 1950. Residential lead paint was banned in 1978, so housing age is the strongest available proxy for lead-paint exposure. This describes the county's housing stock, not any one home.
Modelled annual fine-particle pollution (PM2.5) in Mecklenburg County, NC averages 8.3 µg/m³, within the EPA's annual standard of 9 µg/m³. These are CDC modelled county estimates rather than readings from a specific monitor.
How radon zones work · Air quality by county · Lead exposure guide
27 public water systems serving Mecklenburg County, NC have EPA lead testing on record. The reported lead sample skews toward systems that already flagged a problem, so its exceedance rate is not directly comparable with other areas. 8 water systems serving Mecklenburg County, NC carry a health-based EPA Safe Drinking Water Act violation.
| Most-cited violation type | Systems affected |
|---|---|
| Lead and Copper Rule Revisions | 3 |
| Lead and Copper Rule | 3 |
| Total Trihalomethanes (TTHM) | 1 |
| Combined Radium (226 + 228) | 1 |
| Ground Water Rule | 1 |
Source: EPA Lead and Copper Rule 90th-percentile tap sampling and EPA SDWIS Safe Drinking Water Act enforcement records, aggregated from the public water systems serving this county. Figures are counts of water systems, not a test of any individual home or tap.