Randolph County, North Carolina: drinking water report. Randolph County – Asheboro – serves about 145,000 residents south of Greensboro.
Randolph County – Asheboro – serves about 145,000 residents south of Greensboro. Water comes from the Deep River and Randleman Lake, a reservoir completed in 2010 to provide long-term supply for the Piedmont Triad region.
Randleman Lake provides a new, clean source that has improved water quality for the region compared to the older river intakes it replaced. UCMR5 data shows minimal PFAS detections. According to NC DEQ's 2024 data, county systems met all federal standards.
The new reservoir's protected watershed produces better source water quality than the more heavily developed watersheds feeding older Piedmont reservoirs.
Randolph County benefits from a relatively new reservoir with a protected watershed. Water quality is consistently good.
Check your water for data in your area. A carbon filter improves taste. Our water filter guide covers options. Pull your detailed report, and visit our North Carolina page for statewide data.
Drinking water is one exposure route. These federal datasets also cover Randolph County, NC.
The EPA places Randolph 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.
43% of homes in Randolph County, NC were built before 1980, and 9% 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 Randolph County, NC averages 8.2 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