Perfluorooctanesulfonic acid
5.4ng/L
Each block = 4.0 ng/L federal MCL (2024)
Short answer: PFOS is above its federal limit (a 2024 limit that water systems have until at least 2029 to meet); everything else measured is within its reference or not detected. Roanoke Rapids Sanitary Dist serves 15,768 residents.
This report uses ROANOKE RAPIDS SANITARY DIST. Your water bill or annual water quality report names your actual supplier.
Source: EPA SDWIS 2026Q2.
The bar is drawn in blocks of the 4.0 ng/L federal MCL (2024), so the length shows how far above it the result sits.
5.4ng/L
Each block = 4.0 ng/L federal MCL (2024)
ROANOKE RAPIDS SANITARY DIST (EPA PWSID NC0442010) delivers surface water to 15,768 residents. This report reflects 29 individual PFAS result(s) from the source UCMR5 observations and the latest Lead & Copper Rule 90th-percentile result. Water hardness and disinfectant type are pending the utility's own annual report.
0health-based violations in the last 10 years
From EPA SDWIS. A clean violation history means no enforcement action was recorded; it does not cover contaminants without a limit.
No result is not a pass. Your utility's annual water quality report may list them, and a certified lab test covers your own tap.
Plumbing inside a home can add lead that the system record can't show. A tap test tells you what reaches your glass.
PFOS 5.4 ng/L, above the 4 ng/L limit
3 galvanized lines to replace
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
When your results arrive, read them here →
Each card names which Roanoke Rapids findings its current certification covers, and which it doesn't.
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PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Roanoke Rapids, PFOS 5.4 ng/L was measured above the 4 ng/L federal limit in EPA's 2024 testing. ROANOKE RAPIDS SANITARY DIST (PWSID NC0442010) has a Purity Score of 71/100 (confidence: moderate), assessed at the water-system level and computed only from contaminants that were measured. Water can change in your own pipes, so a certified test is the only way to know what comes out of your tap.
ROANOKE RAPIDS SANITARY DIST (PWS ID NC0442010) is the public water system on record for Roanoke Rapids, North Carolina, serving about 15,768 people. Confirm the utility on your water bill before acting on a specific finding.
Surface water (primary source of record in EPA SDWIS).
Yes. In EPA's UCMR 5 testing (2024-02-06 to 2024-11-04), PFOS was measured at 5.4 ng/L against a 4 ng/L federal limit. Reverse osmosis and filters certified to NSF/ANSI 53 for PFOA/PFOS reduce them at the tap.
Lead is not in Roanoke Rapids's current published record. Lead usually enters from a building's own pipes and fixtures, so a certified home test is the way to know yours.
PurityMap's current record for Roanoke Rapids holds 31 findings: 1 above a reference and 30 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass.
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| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 5.4 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | Not detected above the reporting limit | 2023–2025 monitoring period | Lead & Copper Rule 90th-percentile: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-04 | UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010) |
Perfluorooctanesulfonic acid (PFOS)
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorobutanesulfonic acid (PFBS)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluoropentanesulfonic acid (PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)
Every value is the published result from the cited public record. A reporting limit is the lowest level the method could reliably quantify; a non-detect is not a guarantee of zero.
UCMR5 Analytical Results
UCMR5 Analytical Results: ROANOKE RAPIDS SANITARY DIST (NC0442010)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: ROANOKE RAPIDS SANITARY DIST (NC0442010)
US EPA SDWIS
Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.
Start with the hot-or-cold tap check. Where Roanoke Rapids Sanitary Dist reported something related, it's shown below.
Lead at Roanoke Rapids Sanitary Dist: not detected (90th percentile, 2023–2025 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.