Water system · PWSID NC0368010
ORANGE WATER & SEWER AUTHORITY
PWSID
NC0368010
State
North Carolina
City
CARRBORO
Population served
86,500
Primary source
Surface water
Score history
▼ 25 points — the score moved from 100 to 75 on Jun 18, 2026, as newly published EPA data was incorporated.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Mar 2025). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
4.8 ppt
limit 4 ppt
PFOA
Perfluorooctanoic acid
4.6 ppt
limit 4 ppt
Violations & enforcement
2
Violations on record
0
Unaddressed
0
Health-based
9
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Mar 2024. Official EPA record →
Recent enforcement actions
- State action · SIF Mar 2024
- State action · SOX May 2023
- State action · SIE Mar 2023
- State action · SFJ Mar 2023
- State action · SFL Mar 2023
- State action · SOX Jun 2010
- State action · SIF Sep 2009
- State action · SFJ Aug 2009
Area water-quality monitoring
Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.
Fluoride
1 station · latest Oct 2023
Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.
This profile is built from EPA public records for system NC0368010 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.