Perfluorooctanoic acid
6.8ng/L
Each block = 4.0 ng/L federal MCL (2024)
Short answer: PFOA is above its federal limit (a 2024 limit that water systems have until at least 2029 to meet); 2 more are detected with no federal limit, and everything else measured is within its reference or not detected. Montclair Water Bureau serves 40,150 residents.
Your water bill or annual water quality report names your actual supplier.
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.
6.8ng/L
Each block = 4.0 ng/L federal MCL (2024)
MONTCLAIR WATER BUREAU (EPA PWSID NJ0713001) delivers surface water to 40,150 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.
1health-based violation in the last 10 years
From EPA SDWIS. Counted once per contaminant per year, as in the Track record score.
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.
Every filing is listed; the Track record score counts at most one per contaminant per year.
Resolved
to Resolved
Plumbing inside a home can add lead that the system record can't show. A tap test tells you what reaches your glass.
PFOA 6.8 ng/L, above the 4 ng/L limit (+4 more PFAS detected)
182 lead service lines; 216 galvanized lines to replace
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure.
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 Upper Montclair findings its current certification covers, and which it doesn't.
As an Amazon Associate, PurityMap earns from qualifying purchases. A product appears here only when a current certification record covers at least one identified concern; every concern stays listed. The retail offer is looked up afterwards and never changes which products appear or their order. Affiliate disclosure.













PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Upper Montclair, PFOA 6.8 ng/L was measured above the 4 ng/L federal limit in EPA's 2024 testing. MONTCLAIR WATER BUREAU (PWSID NJ0713001) has a Purity Score of 61/100 (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.
MONTCLAIR WATER BUREAU (PWS ID NJ0713001) is the public water system on record for Upper Montclair, New Jersey, serving about 40,150 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 (2024-04-11 to 2025-01-23), PFOA was measured at 6.8 ng/L against a 4 ng/L federal limit. PFHxA (3 ng/L, below the 400,000 ng/L state limit) and PFOS (4 ng/L, below the 4 ng/L federal limit) were also detected. PFBA (8.6 ng/L) and PFPeA (13 ng/L) were also detected; they have no federal or state limit. Reverse osmosis and filters certified to NSF/ANSI 53 for PFOA/PFOS reduce them at the tap.
Lead is not in Upper Montclair'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 Upper Montclair holds 31 findings: 1 above a reference, 2 detected within the reference, 2 detected with no limit and 26 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass.
Follow Upper Montclair's water
One email when a new sampling round is published, a result moves above or below its reference, or the system's score changes.
Double opt-in: we email a confirmation link. Unsubscribe anytime. No spam.
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 6.8 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluorooctanesulfonic acid (PFOS) | 4 ng/L | 4.0 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluorohexanoic acid (PFHxA) | 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluorobutanoic acid (PFBA) | 8.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluoropentanoic acid (PFPeA) | 13 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| 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 | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| 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 | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| 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 | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| 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 | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| 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 | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | Not detected above the reporting limit | 2026–2026 monitoring period (still open) | Lead & Copper Rule 90th-percentile: MONTCLAIR WATER BUREAU (NJ0713001) |
| 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 | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| 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 | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2025-01-23 | UCMR5 Analytical Results: MONTCLAIR WATER BUREAU (NJ0713001) |
Perfluorooctanesulfonic acid (PFOS)
Perfluorohexanoic acid (PFHxA)
Perfluoropentanoic acid (PFPeA)
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)
Perfluoropentanesulfonic acid (PFPeS)
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: MONTCLAIR WATER BUREAU (NJ0713001)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: MONTCLAIR WATER BUREAU (NJ0713001)
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 Montclair Water Bureau reported something related, it's shown below.
Lead at Montclair Water Bureau: not detected (90th percentile, 2026 monitoring period (still open)). Lead has no taste, so a taste neither shows nor rules it out.