Milltown W Dept (NJ1212001) reported PFOA up to 11.7 ppt at Elkins Lane Treatment Plant – Elkins Treatment UCMR5 Sample Site in UCMR5 sampling, 2024-03-12 to 2024-12-17 (EPA MCL 4 ppt); 1 of 1 filter we track is certified to reduce PFOA under NSF/ANSI 53 (PFOA/PFOS combined pass level 70 ppt).

PFAS were detected in this water system's UCMR5 testing. Check which of them the filter you own is certified to reduce.

PFAS results for Milltown W Dept (NJ1212001)

In plain words

This water system's highest reported PFOA result was 11.7 ppt (parts per trillion), at Elkins Lane Treatment Plant – Elkins Treatment UCMR5 Sample Site in UCMR5 sampling, 2024-03-12 to 2024-12-17. The federal legal limit (EPA MCL) for PFOA is 4 ppt. Compliance is judged on a running yearly average at each sampling point, not on any single result.

Check the filter you own

We track 1 filter so far. It is certified to reduce PFOA and PFOS under NSF/ANSI 53. That standard's pass level is 70 ppt for the two combined, set by the standard, not by the legal limit. No certified claim exists for HFPO-DA, PFBA, PFHxA or PFPeA under NSF/ANSI 53 or 58 (2022 editions). HFPO-DA is the compound often called GenX.

Check the filter you own

Certified claims for the filter we track come from its manufacturer's performance data sheet. If your filter is not listed, we do not have its certification data, and we do not guess.

PFAS compounds reported, and which filters we track are certified to reduce them

How to read this table: 'Highest level reported' is the single highest result in the dataset for that sampling point, not a yearly average. The legal limit is judged on a running yearly average at each sampling point. The certification pass level is the most a filter may leave in its treated water during the lab test; for PFOA and PFOS it applies to the two combined. The standard sets it, not the legal limit. These numbers come from different tests, so we do not subtract one from another or estimate what a filter would leave in your water.

Scroll sideways to see every column.

Many terms in this table are explained in Words on this page.

CompoundCertification statusHighest level reportedSampling pointSample datesDatasetLegal limit and certification pass level
PFOACertified to reduce: 1 of 1 filter we track11.7 pptElkins Lane Treatment Plant – Elkins Treatment UCMR5 Sample Site2024-03-12 to 2024-12-17EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5)
  • EPA MCL 4 ppt (2024 rule, 89 FR 32532)
  • NSF/ANSI 53 combined PFOA + PFOS pass level: 70 ppt
PFOSCertified to reduce: 1 of 1 filter we track5.4 pptElkins Lane Treatment Plant – Elkins Treatment UCMR5 Sample Site2024-03-12 to 2024-12-17EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5)
  • EPA MCL 4 ppt (2024 rule, 89 FR 32532)
  • NSF/ANSI 53 combined PFOA + PFOS pass level: 70 ppt
HFPO-DANot scored: no certified claim exists under NSF/ANSI 53 or 58 (2022 editions)12.9 pptElkins Lane Treatment Plant – Elkins Treatment UCMR5 Sample Site2024-03-12 to 2024-12-17EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5)
  • EPA MCL 10 ppt (2024 rule, 89 FR 32532)EPA published a proposal to remove this limit on May 20, 2026 (91 FR 29413). The proposal is not final, and the limit remains in effect. Status last checked in the Federal Register and the Code of Federal Regulations on October 23, 2026.
PFBANot scored: no certified claim exists under NSF/ANSI 53 or 58 (2022 editions)5.4 pptElkins Lane Treatment Plant – Elkins Treatment UCMR5 Sample Site2024-03-12 to 2024-12-17EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5)
  • No federal legal limit
PFHxANot scored: no certified claim exists under NSF/ANSI 53 or 58 (2022 editions)5.4 pptElkins Lane Treatment Plant – Elkins Treatment UCMR5 Sample Site2024-03-12 to 2024-12-17EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5)
  • No federal legal limit
PFPeANot scored: no certified claim exists under NSF/ANSI 53 or 58 (2022 editions)3.9 pptElkins Lane Treatment Plant – Elkins Treatment UCMR5 Sample Site2024-03-12 to 2024-12-17EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5)
  • No federal legal limit

Tested, not detected at or above the reporting level

These compounds were tested and not detected at or above the reporting level at any sampling point, so they have no row in the table above.

Certified claims, with their sources

PFOA: certified to reduce

Aquasana AQ-5300+ (replacement cartridge AQ-5300+R)

Certified to NSF/ANSI 53 for PFOA/PFOS by WQA under Aquasana, Inc., AQ-5300+.

Legal limit: EPA MCL (2024): 4 ppt. NSF/ANSI 53 combined PFOA + PFOS pass level: 70 ppt.

Rated life: 800 gallons (data sheet).

Manufacturer performance data sheet (PDF) Version date not printed on the data sheet; retrieved 2026-10-20.

PFOS: certified to reduce

Aquasana AQ-5300+ (replacement cartridge AQ-5300+R)

Certified to NSF/ANSI 53 for PFOA/PFOS by WQA under Aquasana, Inc., AQ-5300+.

Legal limit: EPA MCL (2024): 4 ppt. NSF/ANSI 53 combined PFOA + PFOS pass level: 70 ppt.

Rated life: 800 gallons (data sheet).

Manufacturer performance data sheet (PDF) Version date not printed on the data sheet; retrieved 2026-10-20.

PFAS compounds we do not score, and why

To 'score' a compound means to say which filters we track are certified to reduce it. When no certification claim exists, there is nothing to score, so we say so instead of guessing.

Read before acting on these numbers

Words on this page

PFAS
per- and polyfluoroalkyl substances, a large group of manufactured chemicals.
Compound names
short names of individual PFAS chemicals, such as PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonic acid).
ppt
parts per trillion, the unit used here for PFAS results and limits. 1,000 ppt equals 1 part per billion (ppb).
Reporting level
the lowest amount EPA set for labs to report as a number in UCMR 5 testing (EPA calls it the minimum reporting level). A result below it is listed as not detected at or above the reporting level, which does not mean zero.
PWSID
Public Water System ID: the number EPA and the state use to identify a public water system.
UCMR 5
UCMR 5 (also written UCMR5): EPA's fifth Unregulated Contaminant Monitoring Rule, under which public water systems tested for PFAS and lithium starting in 2023. Each result on this page shows its sample dates.
EPA MCL
Maximum Contaminant Level: the federal legal limit for a public water system, judged on a running yearly average at each sampling point. "(2024)" is the year EPA issued the PFAS rule.
NSF/ANSI 53
NSF/ANSI 53 (Drinking Water Treatment Units – Health Effects): a standard for home drinking water filters. Its 2022 edition sets PFAS reduction requirements for seven compounds: PFOA, PFOS, PFHxS, PFNA, PFHpA, PFBS and PFDA.
NSF/ANSI 58
NSF/ANSI 58 (Reverse Osmosis Drinking Water Treatment Systems): a standard for home reverse osmosis systems. Its 2022 edition sets PFAS reduction requirements for the same seven compounds.
Pass level
the most of a compound the standard allows in the filter's treated water during the lab test (for PFOA and PFOS, the two combined). The standard sets it, not the legal limit.
Certified
a certifier lists this model as meeting a standard's requirements for that compound. It describes a lab test, not a measurement of your water.
Certification claim
a reduction claim a standard offers, with its own lab test and pass level. Most are for one compound; for PFOA and PFOS, the claim is for the two combined. A filter model is certified only for the claims its certifier lists it for.
WQA
the Water Quality Association, a trade association that also runs an accredited program certifying water treatment products.
Sampling point / entry point
the place a sample was taken. An entry point is where treated water enters the distribution pipes, usually at a treatment plant. Neither is your tap.
Proposed rule
a change EPA has published for public comment but has not adopted. A proposed rule does not change any current limit.
Federal Register (FR)
the U.S. government's official daily publication of federal rules, proposed rules and notices. "89 FR 32532" means volume 89, starting at page 32532.
Code of Federal Regulations (CFR)
the official collection of federal rules in effect, arranged by subject. As part of each status check we read the PFAS limits in its continuously updated online version, the eCFR (40 CFR 141.61(c)(2)).
HFPO-DA (GenX)
hexafluoropropylene oxide dimer acid, a PFAS compound often called GenX.
Dataset
the published set of results a number comes from, named in the Dataset column.
Filters we track
the filters whose manufacturer performance data sheets we have entered. A filter not on our list may still be certified; we do not have its data.
Score
to say which filters we track are certified to reduce a compound.
Performance data sheet
the manufacturer's document listing a filter's certified claims, pass levels and rated life; it is our source for every certified claim.
Rated life
how much water a cartridge is certified to treat, from its data sheet; certified performance applies only within it.
Twp, Boro, W Dept, Div
abbreviations in water system names: Twp is township, Boro is borough, W Dept is water department, and Div is division.

Sources

Detection data: EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5).

EPA's public water system database (SDWIS) lists this system as MILLTOWN W DEPT, serving a population of 7,000 (retrieved 2026-10-23).

EPA's UCMR5 data lists this system as MILLTOWN W DEPT.

Each level is the highest result the dataset reports for that sampling point, shown as published with its sampling point and sample date range.

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