Short answer: In the 2024–2025 records we hold for Emmaus, four PFAS, PFHxS, PFNA, PFOA and PFOS, each had a sample above a 2024 EPA limit (not a violation: the limits are judged on a yearly average, due 2029), and a health-based violation is on record (EPA SDWIS). 7 more are detected with no federal limit, and everything else measured is within its reference or not detected. 14 substances were detected and 17 were tested and not detected. The water is from Emmaus Borough Public Water, serving 14,000 residents.
Your water bill or annual water quality report names your actual supplier.
Groundwater
The treatment details are not on record.
Mains, then your building’s service line.
Plumbing inside the building is outside this record.
Four PFAS, PFHxS, PFNA, PFOA and PFOS, each had a sample above a 2024 EPA limit (not a violation: the limits are judged on a yearly average, due 2029); 7 more are detected with no federal limit, and everything else measured is within its reference or not detected.
153 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
4.0 ng/L federal MCL (2024): a legal limit. That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. EPA health goal (MCLG): 0.
One EPA sample measured 153 ng/L, above the 4 ng/L limit EPA set in 2024. That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58 (PFOA/PFOS)).
99.8 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
10 ng/L federal MCL (2024): a legal limit. That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. EPA health goal (MCLG): 10 ng/L.
One EPA sample measured 99.8 ng/L, above the 10 ng/L limit EPA set in 2024. That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with PFNA named on the listing).
22.4 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
4.0 ng/L federal MCL (2024): a legal limit. That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. EPA health goal (MCLG): 0.
One EPA sample measured 22.4 ng/L, above the 4 ng/L limit EPA set in 2024. That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58 (PFOA/PFOS)).
33.2 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
10 ng/L federal MCL (2024): a legal limit. That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation.
One EPA sample measured 33.2 ng/L, above the 10 ng/L limit EPA set in 2024. That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with PFHxS named on the listing).
3 µg/L, sampled 2025–2025 monitoring period. EPA SDWIS (Lead & Copper Rule).
15 µg/L federal action level. EPA health goal (MCLG): 0.
The 90th-percentile tap result was 3.0 µg/L (below the 15 µg/L action level).
Usually from lead service lines, solder and fixtures inside buildings, after the water leaves treatment.
Test your own tap first. To reduce it: Lead-certified carbon filter, or reverse osmosis (NSF/ANSI 53 (lead)).
16.5 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
2,000 ng/L EPA health advisory (screening, not a legal limit).
Detected at up to 16.5 ng/L (below the 2,000 ng/L EPA health advisory; a screening level, not a legal limit).
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with PFBS named on the listing).
41.5 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
400,000 ng/L Michigan EGLE state MCL (strictest US state): a state limit.
Detected at up to 41.5 ng/L (below the 400,000 ng/L historical comparison reference).
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with PFHxA named on the listing).
41.9 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
No federal limit is on record for it.
Detected at up to 41.9 ng/L. No federal or state limit exists for this substance; shown for transparency, not graded.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with 8:2 FTS named on the listing).
64.5 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
No federal limit is on record for it.
Detected at up to 64.5 ng/L. No federal or state limit exists for this substance; shown for transparency, not graded.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with 6:2 FTS named on the listing).
13.5 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
No federal limit is on record for it.
Detected at up to 13.5 ng/L. No federal or state limit exists for this substance; shown for transparency, not graded.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with PFBA named on the listing).
7 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
No federal limit is on record for it.
Detected at up to 7.0 ng/L. No federal or state limit exists for this substance; shown for transparency, not graded.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with PFDA named on the listing).
30.9 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
No federal limit is on record for it.
Detected at up to 30.9 ng/L. No federal or state limit exists for this substance; shown for transparency, not graded.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with PFHpA named on the listing).
51.6 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
No federal limit is on record for it.
Detected at up to 51.6 ng/L. No federal or state limit exists for this substance; shown for transparency, not graded.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with PFPeA named on the listing).
22.2 ng/L, sampled 2024-08-01 to 2025-02-11. EPA UCMR 5.
No federal limit is on record for it.
Detected at up to 22.2 ng/L. No federal or state limit exists for this substance; shown for transparency, not graded.
Comes with the source water; home plumbing does not add it.
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with PFUnA named on the listing).
EMMAUS BOROUGH PUBLIC WATER (EPA PWSID PA3390032) delivers groundwater to 14,000 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
The record describes water leaving treatment and samples across the system. Pipes, solder and fixtures inside a building can add lead the record can’t see, especially in older buildings with lead service lines.
Test your waterMeasured in this report
Sampled across the system
Not in this record
Only a tap test measures it
Know what comes from your tap, starting with a first-draw lead sample.
Compare each result with its named reference in our test reader.
Choose a technology certified for what your test found.
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.
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.
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.
When your results arrive, read them here → · Compare every kit we list
Pennsylvania Department of Environmental Protection certifies the labs that test drinking water in Pennsylvania. Find a certified lab in Pennsylvania ↗ · What lab tests cost →
| Finding | Reference type | Technology | Certification to check |
|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS)153 ng/L | Federal MCL | Reverse osmosis, or carbon certified for PFAS | NSF/ANSI 53 or 58 (PFOA/PFOS) |
| Perfluorononanoic acid (PFNA)99.8 ng/L | Federal MCL | Reverse osmosis, or carbon certified for PFAS | NSF/ANSI 53 or 58, with PFNA named on the listing |
| Perfluorooctanoic acid (PFOA)22.4 ng/L | Federal MCL | Reverse osmosis, or carbon certified for PFAS | NSF/ANSI 53 or 58 (PFOA/PFOS) |
| Perfluorohexanesulfonic acid (PFHxS)33.2 ng/L | Federal MCL | Reverse osmosis, or carbon certified for PFAS | NSF/ANSI 53 or 58, with PFHxS named on the listing |
| Lead (90th percentile)3 µg/L | Action level | Lead-certified carbon filter, or reverse osmosis | NSF/ANSI 53 (lead) |
| Perfluorobutanesulfonic acid (PFBS)16.5 ng/L | Screening level | Reverse osmosis, or carbon certified for PFAS | NSF/ANSI 53 or 58, with PFBS named on the listing |
| Perfluorohexanoic acid (PFHxA)41.5 ng/L | State limit | Reverse osmosis, or carbon certified for PFAS | NSF/ANSI 53 or 58, with PFHxA named on the listing |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)41.9 ng/L | No federal limit | Reverse osmosis, or carbon certified for PFAS | NSF/ANSI 53 or 58, with 8:2 FTS named on the listing |
★ Best choice: Aquasana Claryum 2-Stage Under-Sink Filter (AQ-5200), certified for PFOA, PFOS and lead.
| Pick | Product | Details and price | Certification | Why it’s listed | Link |
|---|---|---|---|---|---|
| ★ Best choice | Under-sinkAquasana Claryum 2-Stage Under-Sink Filter (AQ-5200) | TreatsPFOA, PFOS and leadPrice$$ | Certified for PFOA and PFOS (NSF/ANSI 53, WQA) | Why it’s listed: its current certification names PFOA and PFOS, found in Emmaus’ record.See the evidence | Check price on Amazon |
| Also good | Under-sinkAquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M) | TreatsPFOA, PFOS and leadPrice$$ | Certified for PFOA and PFOS (NSF/ANSI 53, WQA) | Why it’s listed: its current certification names PFOA and PFOS, found in Emmaus’ record.See the evidence | Check price at Aquasana |
| Also good | CountertopAquasana Clean Water Machine Countertop Filter (AQ-CWM2) | TreatsPFOA, PFOS and leadPrice$$ | Certified for PFOA and PFOS (NSF/ANSI 53, WQA) | Why it’s listed: its current certification names PFOA and PFOS, found in Emmaus’ record.See the evidence | Check price at Aquasana |
★ Best choice: HealthShield™, certified for PFHxS, Perfluorononanoic acid (PFNA), PFOA, PFOS and Perfluoroheptanoic acid (PFHpA).
Also: lead picks →
PurityMap earns a commission from these links. "Best choice" and "Budget pick" go to certified products first; commission never decides them. As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure.
Lead service lines
Emmaus Borough Public Water reported 242 lead and 308 galvanized service lines to replace in EPA’s inventory (2026Q2). Many utilities replace these lines for free or share the cost. Ask Emmaus Borough Public Water whether your home’s line is on its list before you pay anyone.
Local help
Call to be connected with a local plumbing provider about lead service lines, repiping or fixture replacement.
Older buildings may have lead service lines, solder or fixtures. Emmaus’ record shows lead at 3 µg/L (15 µg/L federal action level). Test first-draw water, then filter if needed.
13 of 29 PFAS tested were detected in Emmaus’ record (PFOS 153 ng/L, PFNA 99.8 ng/L and PFOA 22.4 ng/L, and more); 4 above their limit. If PFAS matters to you, a filter certification names each compound it covers.
Most utilities keep chlorine or chloramine in the pipes. A carbon filter certified for taste and odor reduces either; your utility can tell you which it uses.
Your utility’s annual water quality report usually lists hardness; a test strip also measures it.
Reverse osmosis reduces many dissolved contaminants, including lead and minerals, at a single faucet, with some water sent to drain.
Get one email when Emmaus’ record changes.
One email when a new sampling round is published, a result moves above or below its reference, or the system's score changes.PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Emmaus, PFOS 153 ng/L (limit 4 ng/L), PFNA 99.8 ng/L (limit 10 ng/L), PFOA 22.4 ng/L (limit 4 ng/L) and PFHxS 33.2 ng/L (limit 10 ng/L) were measured in one EPA sample each, above the limits EPA set in 2024 (not a violation: the limits are judged on a yearly average, due 2029); the lead 90th-percentile result was 3 µg/L against the 15 µg/L action level. EMMAUS BOROUGH PUBLIC WATER (PWSID PA3390032) has a Purity Score of 51/100 (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. What we found →
EMMAUS BOROUGH PUBLIC WATER (PWS ID PA3390032) is the public water system on record for Emmaus, Pennsylvania, serving about 14,000 people. Confirm the utility on your water bill before acting on a specific finding. Water utility →
Groundwater (primary source of record in EPA SDWIS). Water utility →
Yes. In EPA's UCMR 5 testing (2024-08-01 to 2025-02-11), PFOS was measured at 153 ng/L in one EPA sample, above the 4 ng/L limit EPA set in 2024, PFNA was measured at 99.8 ng/L in one EPA sample, above the 10 ng/L limit EPA set in 2024, PFOA was measured at 22.4 ng/L in one EPA sample, above the 4 ng/L limit EPA set in 2024 and PFHxS was measured at 33.2 ng/L in one EPA sample, above the 10 ng/L limit EPA set in 2024. EPA's 2024 limits are judged on a yearly average, and water systems have until 2029 to meet them, so a single sample is not a violation. PFBS (16.5 ng/L, below the 2,000 ng/L EPA health advisory) and PFHxA (41.5 ng/L, below the 400,000 ng/L state limit) were also detected. 6:2 FTS (64.5 ng/L), 8:2 FTS (41.9 ng/L), PFBA (13.5 ng/L), PFDA (7 ng/L), PFHpA (30.9 ng/L), PFPeA (51.6 ng/L) and PFUnA (22.2 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. What we found →
EMMAUS BOROUGH PUBLIC WATER's most recent lead 90th-percentile result (2025) was 3 µg/L, below the 15 µg/L action level. That figure comes from sampled homes; lead usually enters from a building's own pipes and fixtures, so only a test at your tap tells you what you drink. Your household →
PurityMap's current record for Emmaus holds 31 findings: 4 above a reference, 3 detected within the reference, 7 detected with no limit and 17 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass. Records →
UCMR5 Analytical Results
UCMR5 Analytical Results: EMMAUS BOROUGH PUBLIC WATER (PA3390032)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: EMMAUS BOROUGH PUBLIC WATER (PA3390032)
US EPA SDWIS
Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.
EPA SDWIS, EPA UCMR 5 and utility reports, each dated and linked.
Units converted to one basis; a non-detect kept distinct from zero.
Each result tagged by reference type: MCL, action level, screening level or aesthetic.
Every value sits against its own reference, never a blended one.
Measured subjects summarised at the water-system level; an open health-based violation caps the score.
Treatment is matched to what was found; a product is called certified only when its current certification names it.
What the Purity Score means: a summary of this water system’s published record, capped while a health-based violation is open. It is not a test of any tap. EMMAUS BOROUGH PUBLIC WATER · PWSID PA3390032 · Purity Score 51/100 (Poor) · Confidence: moderate · Assessed at the water-system level
Full methodology →Start with the hot-or-cold tap check. Where Emmaus Borough Public Water reported something related, it's shown below.
Lead at Emmaus Borough Public Water: 3 µg/L (90th percentile, 2025 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.