Bear, DE · PFAS · forever chemicals
Is There PFAS in Bear Tap Water?
Bear, DE: PFOA 23.1 ng/L, 6× EPA's 4 ng/L limit; PFOS also above. Every PFAS result and filter certifications per compound.
The measurements · EPA UCMR 5
8 of 29 PFAS detected
Each result is read against its own reference. Only PFOA, PFOS and PFHxS have federal limits. PFBA, PFHpA and PFPeA have no federal or state limit and are shown for transparency, not graded.
- PFOAFederal MCLPerfluorooctanoic acid23.1ng/LAbove its limit · sampled 2024-05-06 to 2025-02-19Evidence
- PFOSFederal MCLPerfluorooctanesulfonic acid6ng/LAbove its limit · sampled 2024-05-06 to 2025-02-19Evidence
- PFHxSFederal MCLPerfluorohexanesulfonic acid8.9ng/LDetected, below its limit · limit under EPA review · sampled 2024-05-06 to 2025-02-19Evidence
- PFBSEPA health advisoryPerfluorobutanesulfonic acid8.7ng/LDetected, below its EPA health advisory · sampled 2024-05-06 to 2025-02-19Evidence
- PFHxAState MCL · MichiganPerfluorohexanoic acid72.2ng/LDetected, below its state limit · sampled 2024-05-06 to 2025-02-19Evidence
- PFPeANo limitPerfluoropentanoic acid106ng/L
No federal or state limit: shown for transparency, not graded.
Detected, no limit · sampled 2024-05-06 to 2025-02-19Evidence - PFBANo limitPerfluorobutanoic acid79.1ng/L
No federal or state limit: shown for transparency, not graded.
Detected, no limit · sampled 2024-05-06 to 2025-02-19Evidence - PFHpANo limitPerfluoroheptanoic acid18.9ng/L
No federal or state limit: shown for transparency, not graded.
Detected, no limit · sampled 2024-05-06 to 2025-02-19Evidence
All 29 compounds in this record
- PFOAMCL23.1 ng/L
- PFOSMCL6 ng/L
- PFHxSMCL8.9 ng/L
- PFNAMCLNot detected
- HFPO-DA (GenX)MCLNot detected
- PFBS8.7 ng/L
- PFHxA72.2 ng/L
- PFBA79.1 ng/L
- PFHpA18.9 ng/L
- PFPeA106 ng/L
- 11Cl-PF3OUdSNot detected
- 4:2 FTSNot detected
- 6:2 FTSNot detected
- 8:2 FTSNot detected
- 9Cl-PF3ONSNot detected
- ADONANot detected
- NEtFOSAANot detected
- NFDHANot detected
- NMeFOSAANot detected
- PFDANot detected
- PFDoANot detected
- PFEESANot detected
- PFHpSNot detected
- PFMBANot detected
- PFMPANot detected
- PFPeSNot detected
- PFTANot detected
- PFTrDANot detected
- PFUnANot detected
MCL marks the 5 PFAS given a federal limit in EPA's 2024 rule. EPA has proposed rescinding three of those limits; they apply until a final rule.
Results as a table29 results with limit, status, sample date and source
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 23.1 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluorooctanesulfonic acid (PFOS) | 6 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluorohexanesulfonic acid (PFHxS) | 8.9 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluorobutanesulfonic acid (PFBS) | 8.7 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 | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluorohexanoic acid (PFHxA) | 72.2 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluorobutanoic acid (PFBA) | 79.1 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluoroheptanoic acid (PFHpA) | 18.9 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluoropentanoic acid (PFPeA) | 106 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| 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 | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| 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 | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| 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 | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| 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 | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| 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 | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-05-06 to 2025-02-19 | UCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552) |
How this compares
PFOS across 764 cities with a detected value
Bear 64 ng/L federal MCL (2024)
3,396 more were below the lab's 4 ng/L reporting limit and aren't plotted, and 34 have no result on record. 66 cities above 25 ng/L are grouped in the last bar. A position here is not a verdict on the water.
Where Bear sits6 ng/L PFOSLower than 62% of 764 cities with a detected value.
What this record covers
- ARTESIAN WATER COMPANY's water system as a whole, as reported to EPA UCMR 5.
- 29 PFAS compounds, each with its own result.
- Samples taken 2024-05-06 to 2025-02-19.
What is unknown
- The water at your tap. Building plumbing isn't in this record.
- PFAS not listed in the 29 above were not reported in these records.
- Levels since the last sample have not been published.
Treatment capabilities that apply
Test first, then match a certified method.
A tap test can confirm levels at your home before you choose treatment.
Identified concerns
- PFOA · exceeds the limit
- PFOS · exceeds the limit
- PFBS · detected below the limit
- PFHxA · detected below the limit
- PFHxS · detected below the limit
- PFBA · detected, no federal or state limit
- PFHpA · detected, no federal or state limit
- PFPeA · detected, no federal or state limit
- Reverse osmosisOpen the method →
- Activated carbon (GAC)Open the method →
- Anion exchangeOpen the method →
9 products have a current certification naming a PFAS detected here.See PFAS filters, checked compound by compound ↓
Commercial · PFAS filters
Fit for Bear’s PFAS, compound by compound
Each filter is checked against the 8 PFAS detected here. A ✓ needs a current certification record that names the compound. A PFAS claim on the box is not enough.
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.
- ✓Certified for this compound
- ?Claimed or likely, not established
- –No claim on record
Under-Sink Filter
Aquasana Claryum 2-Stage Under-Sink Filter (AQ-5200)
Activated Carbon (Claryum)Detected in Bear2 of 8 certified
- PFOA23.1 ng/L✓Certified for this compound
- PFOS6 ng/L✓Certified for this compound
- PFBS8.7 ng/L–No claim on record
- PFHxA72.2 ng/L–No claim on record
- PFHxS8.9 ng/L–No claim on record
- PFBA79.1 ng/L–No claim on record
- PFHpA18.9 ng/L–No claim on record
- PFPeA106 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOS
Certified for PFOA, PFOS; not established for PFBS, PFHxA, PFHxS, PFBA, PFHpA, PFPeA.
Under-Sink Filter
Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M)
Activated Carbon (Claryum)Detected in Bear2 of 8 certified
- PFOA23.1 ng/L✓Certified for this compound
- PFOS6 ng/L✓Certified for this compound
- PFBS8.7 ng/L–No claim on record
- PFHxA72.2 ng/L–No claim on record
- PFHxS8.9 ng/L–No claim on record
- PFBA79.1 ng/L–No claim on record
- PFHpA18.9 ng/L–No claim on record
- PFPeA106 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42
Certified for PFOA, PFOS; not established for PFBS, PFHxA, PFHxS, PFBA, PFHpA, PFPeA.
Countertop System
Aquasana Clean Water Machine Countertop Filter (AQ-CWM2)
Activated Carbon (Claryum)Detected in Bear2 of 8 certified
- PFOA23.1 ng/L✓Certified for this compound
- PFOS6 ng/L✓Certified for this compound
- PFBS8.7 ng/L–No claim on record
- PFHxA72.2 ng/L–No claim on record
- PFHxS8.9 ng/L–No claim on record
- PFBA79.1 ng/L–No claim on record
- PFHpA18.9 ng/L–No claim on record
- PFPeA106 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42
Certified for PFOA, PFOS; not established for PFBS, PFHxA, PFHxS, PFBA, PFHpA, PFPeA.
Countertop System
Patriot Pure Ultimate Water Filtration System
Gravity pour-through (Nanomesh filter)Detected in Bear2 of 8 certified
- PFOA23.1 ng/L✓Certified for this compound
- PFOS6 ng/L✓Certified for this compound
- PFBS8.7 ng/L–No claim on record
- PFHxA72.2 ng/L–No claim on record
- PFHxS8.9 ng/L–No claim on record
- PFBA79.1 ng/L–No claim on record
- PFHpA18.9 ng/L–No claim on record
- PFPeA106 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOS
Certified for PFOA, PFOS; not established for PFBS, PFHxA, PFHxS, PFBA, PFHpA, PFPeA.
Countertop System
AquaTru Carafe Countertop Reverse-Osmosis Purifier (AT100)
Reverse OsmosisDetected in Bear2 of 8 certified
- PFOA23.1 ng/L✓Certified for this compound
- PFOS6 ng/L✓Certified for this compound
- PFBS8.7 ng/L–No claim on record
- PFHxA72.2 ng/L–No claim on record
- PFHxS8.9 ng/L–No claim on record
- PFBA79.1 ng/L–No claim on record
- PFHpA18.9 ng/L–No claim on record
- PFPeA106 ng/L–No claim on record
CertifiedNSF/ANSI 58NSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42
Certified for PFOA, PFOS; not established for PFBS, PFHxA, PFHxS, PFBA, PFHpA, PFPeA.
Countertop System
AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)
Reverse OsmosisDetected in Bear2 of 8 certified
- PFOA23.1 ng/L✓Certified for this compound
- PFOS6 ng/L✓Certified for this compound
- PFBS8.7 ng/L–No claim on record
- PFHxA72.2 ng/L–No claim on record
- PFHxS8.9 ng/L–No claim on record
- PFBA79.1 ng/L–No claim on record
- PFHpA18.9 ng/L–No claim on record
- PFPeA106 ng/L–No claim on record
CertifiedNSF/ANSI 58NSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42
Certified for PFOA, PFOS; not established for PFBS, PFHxA, PFHxS, PFBA, PFHpA, PFPeA.
Under-Sink Filter
Waterdrop G3P600 Tankless Reverse-Osmosis System
Reverse OsmosisDetected in Bear2 of 8 certified
- PFOA23.1 ng/L✓Certified for this compound
- PFOS6 ng/L✓Certified for this compound
- PFBS8.7 ng/L–No claim on record
- PFHxA72.2 ng/L–No claim on record
- PFHxS8.9 ng/L–No claim on record
- PFBA79.1 ng/L–No claim on record
- PFHpA18.9 ng/L–No claim on record
- PFPeA106 ng/L–No claim on record
CertifiedNSF/ANSI 58NSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42
Certified for PFOA, PFOS; not established for PFBS, PFHxA, PFHxS, PFBA, PFHpA, PFPeA.
Under-Sink Filter
Waterdrop G3P800 Tankless Reverse-Osmosis System
Reverse OsmosisDetected in Bear2 of 8 certified
- PFOA23.1 ng/L✓Certified for this compound
- PFOS6 ng/L✓Certified for this compound
- PFBS8.7 ng/L–No claim on record
- PFHxA72.2 ng/L–No claim on record
- PFHxS8.9 ng/L–No claim on record
- PFBA79.1 ng/L–No claim on record
- PFHpA18.9 ng/L–No claim on record
- PFPeA106 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOSNSF/ANSI 58NSF/ANSI 42
Certified for PFOA, PFOS; not established for PFBS, PFHxA, PFHxS, PFBA, PFHpA, PFPeA.
Refrigerator Filter
Whirlpool Filter 3 Refrigerator Water Filter (WHR3RXD1)
Activated CarbonDetected in Bear2 of 8 certified
- PFOA23.1 ng/L✓Certified for this compound
- PFOS6 ng/L✓Certified for this compound
- PFBS8.7 ng/L–No claim on record
- PFHxA72.2 ng/L–No claim on record
- PFHxS8.9 ng/L–No claim on record
- PFBA79.1 ng/L–No claim on record
- PFHpA18.9 ng/L–No claim on record
- PFPeA106 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42NSF/ANSI 401
Certified for PFOA, PFOS; not established for PFBS, PFHxA, PFHxS, PFBA, PFHpA, PFPeA.
- Browse, not a match:
- Brita Elite Water Filter Pitcher
- Clearly Filtered Pitcher (lab-tested, not NSF 53 certified)
- Culligan ZeroWater 10-Cup Pitcher (ZEROP10)
- Frizzlife SP99 Under-Sink Filter
None of these is certified for all 8 compounds detected here. A tap test first tells you which ones reach your glass.
Questions
Frequently asked
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Is there PFAS in Bear tap water?
In EPA's UCMR 5 testing of ARTESIAN WATER COMPANY (2024-05-06 to 2025-02-19): PFBA 79.1 ng/L (no federal or state limit), PFBS 8.7 ng/L (EPA health advisory 2,000), PFHpA 18.9 ng/L (no federal or state limit), PFHxA 72.2 ng/L (state limit 400,000), PFHxS 8.9 ng/L (limit 10), PFOA 23.1 ng/L (limit 4), PFOS 6 ng/L (limit 4), PFPeA 106 ng/L (no federal or state limit) and the other 21 PFAS tested not detected. "Not detected" means below the lab's reporting limit, not proven zero.
What are the federal PFAS limits?
EPA's 2024 drinking-water rule set maximum contaminant levels of 4.0 ng/L for PFOA and for PFOS, and 10 ng/L for PFHxS, PFNA and HFPO-DA (GenX). In May 2026 EPA proposed keeping the PFOA and PFOS limits, with the option of until 2031 to comply, and rescinding the other three. Until a final rule, all five limits apply. Results above them today are above the limits in force.
How do I remove PFAS from my tap water?
Reverse-osmosis systems and filters certified to NSF/ANSI 53 or 58 for PFOA/PFOS reduction are the proven options at the tap. Check the certifier's listing (NSF, WQA or IAPMO) for the exact model, and replace cartridges on schedule.
- UCMR5 Analytical ResultsUCMR5 Analytical Results: ARTESIAN WATER COMPANY (DE0000552)US EPA · 2026-01-15View source ↗
- State SDWIS Compliance RecordLead & Copper Rule 90th-percentile: ARTESIAN WATER COMPANY (DE0000552)US EPA SDWIS · 2026-07-09View source ↗