Chatham County, NC
The federal environmental record for Chatham County (population 81,624): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
1
federal cleanup sites
3
PFAS-detecting water systems
7
TRI facilities
50
open tank releases
Drinking water: PFAS testing
Public water systems serving Chatham with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| SILER CITY, TOWN OF NC0319010 | PFOS: 12.1 ng/L PFOA: 4.7 ng/L PFPeA: 3.4 ng/L | above final limit |
| PITTSBORO, TOWN OF NC0319015 | PFBA: 12.4 ng/L PFPeA: 11.6 ng/L PFHxA: 5.7 ng/L | detected |
| CHATHAM CO-NORTH NC0319126 | PFPeA: 4.8 ng/L PFHxA: 4.6 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
7 facilities in Chatham filed TRI reports for 2024, totalling 554k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| ARAUCO N.A. INC. | MONCURE | Methanol, Formaldehyde | 491k lb |
| 3M CO-PITTSBORO | MONCURE | Zinc compounds, Manganese compounds | 33k lb |
| ARCLIN USA LLC | MONCURE | Methanol, Formaldehyde | 14k lb |
| GENERAL TIMBER INC | SANFORD | Creosote, Arsenic compounds | 10k lb |
| GENERAL SHALE BRICK INC MONCURE FACILITY PLANTS 24 & 25 | MONCURE | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Hydrogen fluoride | 4k lb |
| TRIANGLE BRICK - MERRY OAKS | MONCURE | Hydrogen fluoride, Lead compounds | 2k lb |
| MOUNTAIRE FARMS - SILER CITY PLANT | SILER CITY | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 180 tank facilities in Chatham: 143 tanks in service and 407 closed. 166 fuel releases are on record, of which 50 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Chatham as Zone 3, the lowest predicted indoor radon (under 2 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Chatham, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- ARCLIN USA, LLCMONCURE