PFOS
2.5× the limitPerfluorooctanesulfonic acid
9.8ng/L
Each block = 4.0 ng/L federal MCL (2024)
EPA UCMR 5 · sampled 2025Evidence
City water report · 2026
Is Lake Hopatcong Tap Water Safe? 2026 Water Quality Report
Short answer: Two PFAS, PFOA and PFOS, are above their federal limits (2024 limits that water systems have until at least 2029 to meet); 1 more is detected with no federal limit, and everything else measured is within its reference or not detected. Jefferson Twp W U LK Hop serves 8,500 residents.
Likely match, check your bill
JEFFERSON TWP W U LK HOP serves Lake Hopatcong
Your water bill or annual water quality report names your actual supplier.
- Source
- Groundwater
- JEFFERSON TWP W U LK HOPThis reportNJ1414011 · 8,500 served
What stands out
Two PFAS above the 2024 federal limit
Each 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.
PFOA
2.1× the limitPerfluorooctanoic acid
8.3ng/L
Each block = 4.0 ng/L federal MCL (2024)
EPA UCMR 5 · sampled 2025Evidence
Coverage by group
31 results on record- PFAS (forever chemicals)2 above · 3 detected · 24 not detected
- Metals & lead1 not detected
- Disinfection by-productsNot monitored
- Other1 not detected
Every detected result
5 detected results, by distance from their limit
JEFFERSON TWP W U LK HOP (EPA PWSID NJ1414011) delivers groundwater to 8,500 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.
- Perfluorooctanesulfonic acid (PFOS)EPA UCMR 5 · 20254.0 ng/L federal MCL (2024)9.8ng/LAbove limit
- Perfluorooctanoic acid (PFOA)EPA UCMR 5 · 20254.0 ng/L federal MCL (2024)8.3ng/LAbove limit
- Perfluorobutanesulfonic acid (PFBS)EPA UCMR 5 · 20252,000 ng/L EPA health advisory (screening, not a legal limit)7ng/LWithin reference
- Perfluorohexanoic acid (PFHxA)EPA UCMR 5 · 2025400,000 ng/L Michigan EGLE state MCL (strictest US state)4.3ng/LWithin reference
- Perfluoropentanoic acid (PFPeA)EPA UCMR 5 · 2025No federal or state limit; shown for transparency7.6ng/LDetected · no limit
26 other contaminants tested, none detected
- 11Cl-PF3OUdS
- 4:2 FTS
- 6:2 FTS
- 8:2 FTS
- 9Cl-PF3ONS
- ADONA
- HFPO-DA (GenX)
- NEtFOSAA
- NFDHA
- NMeFOSAA
- PFBA
- PFDA
- PFDoA
- PFEESA
- PFHpA
- PFHpS
- PFHxS
- PFMBA
- PFMPA
- PFNA
- PFPeS
- PFTA
- PFTrDA
- PFUnA
- Lithium
- Lead (90th percentile)
Track record
5health-based violations in the last 10 years
From EPA SDWIS. Counted once per contaminant per year, as in the Track record score. All 8 EPA filings are listed below.
Not in this recordDisinfection by-products weren't monitored in this dataset
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.
Health-based violations, last 10 years
Every filing is listed; the Track record score counts at most one per contaminant per year.
- Lead and Copper Rule
- Revised Total Coliform Rule
Resolved
- Lead and Copper RuleTT
to Resolved
- Revised Total Coliform RuleTT
to Resolved
- Lead and Copper RuleTT
to Resolved
- Lead and Copper RuleTT
to Resolved
- Lead and Copper RuleTT
to Resolved
- Lead and Copper RuleTT
to Resolved
- Lead and Copper RuleTT
to Resolved
- Lead and Copper RuleTT
to Resolved
What you can do
Test first, then treat what was found
- 01 · TestTest your own tap
A tap test can confirm levels at your home before you choose treatment.
Certified labHow to test your tap → - 02 · Treat PFASReverse osmosis, or carbon certified for PFAS
PFOS 9.8 ng/L, above the 4 ng/L limit (+4 more PFAS detected)
NSF/ANSI 58 or 53, with PFOA/PFOS/PFBS/PFHxA/PFPeA named on the listingTreatment for PFAS →
Commercial
Certified for a concern found here
Each card names which Lake Hopatcong 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.
Under-Sink Filter
Aquasana Claryum 2-Stage Under-Sink Filter (AQ-5200)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluoropentanoic acid (PFPeA)
Not suitable for (5)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
Under-Sink Filter
Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluoropentanoic acid (PFPeA)
Not suitable for (5)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
See all 9 products certified for a Lake Hopatcong concern →
Countertop System
Aquasana Clean Water Machine Countertop Filter (AQ-CWM2)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluoropentanoic acid (PFPeA)
Not suitable for (3)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Countertop System
Patriot Pure Ultimate Water Filtration System
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluoropentanoic acid (PFPeA)
Not suitable for (3)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Countertop System
AquaTru Carafe Countertop Reverse-Osmosis Purifier (AT100)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluoropentanoic acid (PFPeA)
Not suitable for (3)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Countertop System
AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluoropentanoic acid (PFPeA)
Not suitable for (3)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Under-Sink Filter
Waterdrop G3P600 Tankless Reverse-Osmosis System
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluoropentanoic acid (PFPeA)
Not suitable for (5)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
Under-Sink Filter
Waterdrop G3P800 Tankless Reverse-Osmosis System
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluoropentanoic acid (PFPeA)
Not suitable for (5)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
Refrigerator Filter
Whirlpool Filter 3 Refrigerator Water Filter (WHR3RXD1)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluoropentanoic acid (PFPeA)
Not suitable for (3)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Questions
Frequently asked questions
Is Lake Hopatcong tap water safe to drink?
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Lake Hopatcong, PFOS 9.8 ng/L and PFOA 8.3 ng/L were measured above the 4 ng/L federal limit in EPA's 2024 testing. JEFFERSON TWP W U LK HOP (PWSID NJ1414011) has a Purity Score of 45/100 (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.
Who provides tap water in Lake Hopatcong?
JEFFERSON TWP W U LK HOP (PWS ID NJ1414011) is the public water system on record for Lake Hopatcong, New Jersey, serving about 8,500 people. Confirm the utility on your water bill before acting on a specific finding.
Where does Lake Hopatcong get its drinking water?
Groundwater (primary source of record in EPA SDWIS).
Are PFAS "forever chemicals" in Lake Hopatcong's water?
Yes. In EPA's UCMR 5 testing (2025-02-11 to 2025-08-12), PFOS was measured at 9.8 ng/L against a 4 ng/L federal limit and PFOA was measured at 8.3 ng/L against a 4 ng/L federal limit. PFBS (7 ng/L, below the 2,000 ng/L EPA health advisory) and PFHxA (4.3 ng/L, below the 400,000 ng/L state limit) were also detected. PFPeA (7.6 ng/L) was also detected; it has no federal or state limit. Reverse osmosis and filters certified to NSF/ANSI 53 for PFOA/PFOS reduce them at the tap.
Is there lead in Lake Hopatcong's tap water?
Lead is not in Lake Hopatcong'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.
What does the latest Lake Hopatcong water report show?
PurityMap's current record for Lake Hopatcong holds 31 findings: 2 above a reference, 2 detected within the reference, 1 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 this water
Follow Lake Hopatcong'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.
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Sources and dataAll 31 records and their sourcesEPA UCMR 5 · EPA SDWIS (Lead & Copper Rule)
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 9.8 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluorooctanoic acid (PFOA) | 8.3 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluorobutanesulfonic acid (PFBS) | 7 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluorohexanoic acid (PFHxA) | 4.3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluoropentanoic acid (PFPeA) | 7.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
26 other contaminants tested — none detected
| 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 | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| 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 | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| 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 | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| 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 | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| 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 | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| 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: JEFFERSON TWP W U LK HOP (NJ1414011) |
| 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 | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-12 | UCMR5 Analytical Results: JEFFERSON TWP W U LK HOP (NJ1414011) |
Perfluorooctanesulfonic acid (PFOS)
- Result
- 9.8 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Above a historical reference; current applicability unverified
- Sampled
- 2025-02-11 to 2025-08-12
- Result
- 8.3 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Above a historical reference; current applicability unverified
- Sampled
- 2025-02-11 to 2025-08-12
Perfluorobutanesulfonic acid (PFBS)
- Result
- 7 ng/L
- Benchmark
- 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit
- Status
- Within the referenced health-based guidance value
- Sampled
- 2025-02-11 to 2025-08-12
Perfluorohexanoic acid (PFHxA)
- Result
- 4.3 ng/L
- Benchmark
- 400,000 ng/L Michigan EGLE state MCL (strictest US state)
- Status
- Within a historical reference; current applicability unverified
- Sampled
- 2025-02-11 to 2025-08-12
Perfluoropentanoic acid (PFPeA)
- Result
- 7.6 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Detected, no limit
- Sampled
- 2025-02-11 to 2025-08-12
26 other contaminants tested — none detected
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
- Result
- < 5 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
- Result
- Non-Detect (ND)
- Benchmark
- 15 µg/L federal action level
- Status
- Not detected above the reporting limit
- Sampled
- 2026–2026 monitoring period (still open)
- Result
- < 9 µg/L
- Benchmark
- 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Result
- < 6 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Result
- < 20 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluoro-3-methoxypropanoic acid (PFMPA)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluoro-4-methoxybutanoic acid (PFMBA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluorododecanoic acid (PFDoA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluoroheptanesulfonic acid (PFHpS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluoroheptanoic acid (PFHpA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluorohexanesulfonic acid (PFHxS)
- Result
- < 3 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
- Result
- < 4 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluoropentanesulfonic acid (PFPeS)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluorotetradecanoic acid (PFTA)
- Result
- < 8 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluorotridecanoic acid (PFTrDA)
- Result
- < 7 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
Perfluoroundecanoic acid (PFUnA)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-02-11 to 2025-08-12
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: JEFFERSON TWP W U LK HOP (NJ1414011)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: JEFFERSON TWP W U LK HOP (NJ1414011)
US EPA SDWIS
Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.
Something off with your water's smell, color or taste?
Start with the hot-or-cold tap check. Where Jefferson Twp W U LK Hop reported something related, it's shown below.
- Rotten-egg smell
- Cloudy or milky water
- Chlorine smell
- Brown or yellow water
- Metallic taste
Lead at Jefferson Twp W U LK Hop: not detected (90th percentile, 2026 monitoring period (still open)). Lead has no taste, so a taste neither shows nor rules it out.
ZIP codes in Lake Hopatcong
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.