Orange-Alamance Water System: drinking water record
Two things here need attention.
One thing could not be determined from the record.
What EPA and state records show about this community water system — compliance, PFAS testing, lead sampling, and where its water comes from. Serving about 9,223 people in Orange County.
9,223people served
3health-based violations since 2021
3without recorded resolution
48administrative (paperwork) records
What the records flag
Needs attention
3 health-based violations with no recorded resolution
A health-based violation means a contaminant limit or a required treatment step wasn't met.
Health-based, since 2021
3
Without recorded resolution
3
Official record for your water system · U.S. EPA — Safe Drinking Water Act compliance records · retrieved 2026-08-16 · source
Needs attention
PFOS measured at 11.8 ppt — above the 4 ppt limit systems must meet by 2029
This is not a violation today. EPA's PFAS limits take effect in 2029 (an extension to 2031 has been proposed).
PFOA
9.4 ppt (limit 4)
PFOS
11.8 ppt (limit 4)
Measured in your water system · U.S. EPA — UCMR5 nationwide PFAS monitoring · retrieved 2026-08-15 · source
Lead & copper sampling
Lead: latest 90th-percentile result 0 ppb — below the 10 ppb action level (sampled 2025-12-31, 4 results in the 10-year window).
The 90th-percentile result means 9 out of 10 sampled homes were at or below this level. It measures the water system's corrosion control — it cannot tell you whether your own home's plumbing adds lead. Results older than 10 years, future-dated compliance periods, and physically implausible values are excluded.
PFAS testing
29 PFAS compounds tested under EPA's UCMR5 program; 5 detected.
PFOA: up to 9.4 ppt — above the 4 ppt limit systems must meet by 2029.
PFOS: up to 11.8 ppt — above the 4 ppt limit systems must meet by 2029.
UCMR5 sampling (2023–2026) at entry points to the distribution system. 'Not detected' means below the reporting limit (~4 ppt for PFOA/PFOS), not zero. A result above a future MCL is not a violation today — compliance deadlines are 2029 (2031 extension proposed). These results describe treated water leaving the plant — not the river or lake this system draws from.
Where the water comes from
Surface water.
Buys water from Town of Haw River, whose recent record shows no unresolved health-based violations.
Also holds emergency-only connections (City of Graham, City of Mebane, Town of Hillsborough, Town of Swepsonville) — backup interconnections, not routine supply.
What the record doesn’t establish
Whether your home's own plumbing adds lead or copper — no dataset covers indoor pipes.
Common questions
Does Orange-Alamance Water System have drinking water violations?
EPA compliance records list 3 health-based violations since 2021, 3 without a recorded resolution. Administrative (paperwork) records are counted separately and never added in.
Has Orange-Alamance Water System been tested for PFAS?
Yes — 29 PFAS compounds under EPA's UCMR5 program, with 5 detected. PFOA measured up to 9.4 ppt, above the 4 ppt limit that takes effect in 2029; PFOS measured up to 11.8 ppt, above the 4 ppt limit that takes effect in 2029. Samples are taken at entry points to the distribution system — treated water, not source water.
How many people does Orange-Alamance Water System serve?
EPA records list about 9,223 people served in Orange. Service-area boundaries have known errors — a water bill is the ground truth for any single address.
Records lag their agencies' refresh cycles — a recent change may not appear yet. Absence from a dataset is absence of a record, never evidence that water is clean.
Go deeper
Search any address this system serves for the full report — the waters around it, what's permitted upstream, and every term explained.