Grand Terrace, CA · PFAS · forever chemicals
Is There PFAS in Grand Terrace Tap Water?
Grand Terrace, CA: PFOS 19 ng/L, 5× EPA's 4 ng/L limit; PFOA and PFHxS also above. Every PFAS result and filter certifications per compound.
The measurements · EPA UCMR 5
9 of 29 PFAS detected
Each result is read against its own reference. Only PFHxS, PFOA and PFOS have federal limits. PFBA, PFHpA, PFPeA and PFPeS have no federal or state limit and are shown for transparency, not graded.
- PFOSFederal MCLPerfluorooctanesulfonic acid19ng/LAbove its limit · sampled 2024-07-22 to 2025-01-09Evidence
- PFOAFederal MCLPerfluorooctanoic acid18ng/LAbove its limit · sampled 2024-07-22 to 2025-01-09Evidence
- PFHxSFederal MCLPerfluorohexanesulfonic acid14ng/LAbove its limit · limit under EPA review · sampled 2024-07-22 to 2025-01-09Evidence
- PFBSEPA health advisoryPerfluorobutanesulfonic acid13ng/LDetected, below its EPA health advisory · sampled 2024-07-22 to 2025-01-09Evidence
- PFHxAState MCL · MichiganPerfluorohexanoic acid14ng/LDetected, below its state limit · sampled 2024-07-22 to 2025-01-09Evidence
- PFPeANo limitPerfluoropentanoic acid17ng/L
No federal or state limit: shown for transparency, not graded.
Detected, no limit · sampled 2024-07-22 to 2025-01-09Evidence - PFBANo limitPerfluorobutanoic acid10ng/L
No federal or state limit: shown for transparency, not graded.
Detected, no limit · sampled 2024-07-22 to 2025-01-09Evidence - PFHpANo limitPerfluoroheptanoic acid8.2ng/L
No federal or state limit: shown for transparency, not graded.
Detected, no limit · sampled 2024-07-22 to 2025-01-09Evidence - PFPeSNo limitPerfluoropentanesulfonic acid4ng/L
No federal or state limit: shown for transparency, not graded.
Detected, no limit · sampled 2024-07-22 to 2025-01-09Evidence
All 29 compounds in this record
- PFOAMCL18 ng/L
- PFOSMCL19 ng/L
- PFHxSMCL14 ng/L
- PFNAMCLNot detected
- HFPO-DA (GenX)MCLNot detected
- PFBS13 ng/L
- PFHxA14 ng/L
- PFBA10 ng/L
- PFHpA8.2 ng/L
- PFPeA17 ng/L
- PFPeS4 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
- 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 |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 19 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluorooctanoic acid (PFOA) | 18 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluorohexanesulfonic acid (PFHxS) | 14 ng/L | 10 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluorobutanesulfonic acid (PFBS) | 13 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 | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluorohexanoic acid (PFHxA) | 14 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluorobutanoic acid (PFBA) | 10 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluoroheptanoic acid (PFHpA) | 8.2 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluoropentanesulfonic acid (PFPeS) | 4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluoropentanoic acid (PFPeA) | 17 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| 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 | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| 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 | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| 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 | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| 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 | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| 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 | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-22 to 2025-01-09 | UCMR5 Analytical Results: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057) |
How this compares
PFOS across 764 cities with a detected value
Grand Terrace 194 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 Grand Terrace sits19 ng/L PFOSHigher than 85% of 764 cities with a detected value.
In California
112of 400 city reports
have a regulated PFAS above the federal limit.
PFAS across California →What this record covers
- RIVERSIDE HIGHLAND WATER COMPANY's water system as a whole, as reported to EPA UCMR 5.
- 29 PFAS compounds, each with its own result.
- Samples taken 2024-07-22 to 2025-01-09.
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
- PFHxS · exceeds the limit
- PFOA · exceeds the limit
- PFOS · exceeds the limit
- PFBS · detected below the limit
- PFHxA · 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
- PFPeS · 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 Grand Terrace’s PFAS, compound by compound
Each filter is checked against the 9 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 Grand Terrace2 of 9 certified
- PFHxS14 ng/L–No claim on record
- PFOA18 ng/L✓Certified for this compound
- PFOS19 ng/L✓Certified for this compound
- PFBS13 ng/L–No claim on record
- PFHxA14 ng/L–No claim on record
- PFBA10 ng/L–No claim on record
- PFHpA8.2 ng/L–No claim on record
- PFPeA17 ng/L–No claim on record
- PFPeS4 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOS
Certified for PFOA, PFOS; not established for PFHxS, PFBS, PFHxA, PFBA, PFHpA, PFPeA, PFPeS.
Under-Sink Filter
Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M)
Activated Carbon (Claryum)Detected in Grand Terrace2 of 9 certified
- PFHxS14 ng/L–No claim on record
- PFOA18 ng/L✓Certified for this compound
- PFOS19 ng/L✓Certified for this compound
- PFBS13 ng/L–No claim on record
- PFHxA14 ng/L–No claim on record
- PFBA10 ng/L–No claim on record
- PFHpA8.2 ng/L–No claim on record
- PFPeA17 ng/L–No claim on record
- PFPeS4 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42
Certified for PFOA, PFOS; not established for PFHxS, PFBS, PFHxA, PFBA, PFHpA, PFPeA, PFPeS.
Countertop System
Aquasana Clean Water Machine Countertop Filter (AQ-CWM2)
Activated Carbon (Claryum)Detected in Grand Terrace2 of 9 certified
- PFHxS14 ng/L–No claim on record
- PFOA18 ng/L✓Certified for this compound
- PFOS19 ng/L✓Certified for this compound
- PFBS13 ng/L–No claim on record
- PFHxA14 ng/L–No claim on record
- PFBA10 ng/L–No claim on record
- PFHpA8.2 ng/L–No claim on record
- PFPeA17 ng/L–No claim on record
- PFPeS4 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42
Certified for PFOA, PFOS; not established for PFHxS, PFBS, PFHxA, PFBA, PFHpA, PFPeA, PFPeS.
Countertop System
Patriot Pure Ultimate Water Filtration System
Gravity pour-through (Nanomesh filter)Detected in Grand Terrace2 of 9 certified
- PFHxS14 ng/L–No claim on record
- PFOA18 ng/L✓Certified for this compound
- PFOS19 ng/L✓Certified for this compound
- PFBS13 ng/L–No claim on record
- PFHxA14 ng/L–No claim on record
- PFBA10 ng/L–No claim on record
- PFHpA8.2 ng/L–No claim on record
- PFPeA17 ng/L–No claim on record
- PFPeS4 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOS
Certified for PFOA, PFOS; not established for PFHxS, PFBS, PFHxA, PFBA, PFHpA, PFPeA, PFPeS.
Countertop System
AquaTru Carafe Countertop Reverse-Osmosis Purifier (AT100)
Reverse OsmosisDetected in Grand Terrace2 of 9 certified
- PFHxS14 ng/L–No claim on record
- PFOA18 ng/L✓Certified for this compound
- PFOS19 ng/L✓Certified for this compound
- PFBS13 ng/L–No claim on record
- PFHxA14 ng/L–No claim on record
- PFBA10 ng/L–No claim on record
- PFHpA8.2 ng/L–No claim on record
- PFPeA17 ng/L–No claim on record
- PFPeS4 ng/L–No claim on record
CertifiedNSF/ANSI 58NSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42
Certified for PFOA, PFOS; not established for PFHxS, PFBS, PFHxA, PFBA, PFHpA, PFPeA, PFPeS.
Countertop System
AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)
Reverse OsmosisDetected in Grand Terrace2 of 9 certified
- PFHxS14 ng/L–No claim on record
- PFOA18 ng/L✓Certified for this compound
- PFOS19 ng/L✓Certified for this compound
- PFBS13 ng/L–No claim on record
- PFHxA14 ng/L–No claim on record
- PFBA10 ng/L–No claim on record
- PFHpA8.2 ng/L–No claim on record
- PFPeA17 ng/L–No claim on record
- PFPeS4 ng/L–No claim on record
CertifiedNSF/ANSI 58NSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42
Certified for PFOA, PFOS; not established for PFHxS, PFBS, PFHxA, PFBA, PFHpA, PFPeA, PFPeS.
Under-Sink Filter
Waterdrop G3P600 Tankless Reverse-Osmosis System
Reverse OsmosisDetected in Grand Terrace2 of 9 certified
- PFHxS14 ng/L–No claim on record
- PFOA18 ng/L✓Certified for this compound
- PFOS19 ng/L✓Certified for this compound
- PFBS13 ng/L–No claim on record
- PFHxA14 ng/L–No claim on record
- PFBA10 ng/L–No claim on record
- PFHpA8.2 ng/L–No claim on record
- PFPeA17 ng/L–No claim on record
- PFPeS4 ng/L–No claim on record
CertifiedNSF/ANSI 58NSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42
Certified for PFOA, PFOS; not established for PFHxS, PFBS, PFHxA, PFBA, PFHpA, PFPeA, PFPeS.
Under-Sink Filter
Waterdrop G3P800 Tankless Reverse-Osmosis System
Reverse OsmosisDetected in Grand Terrace2 of 9 certified
- PFHxS14 ng/L–No claim on record
- PFOA18 ng/L✓Certified for this compound
- PFOS19 ng/L✓Certified for this compound
- PFBS13 ng/L–No claim on record
- PFHxA14 ng/L–No claim on record
- PFBA10 ng/L–No claim on record
- PFHpA8.2 ng/L–No claim on record
- PFPeA17 ng/L–No claim on record
- PFPeS4 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOSNSF/ANSI 58NSF/ANSI 42
Certified for PFOA, PFOS; not established for PFHxS, PFBS, PFHxA, PFBA, PFHpA, PFPeA, PFPeS.
Refrigerator Filter
Whirlpool Filter 3 Refrigerator Water Filter (WHR3RXD1)
Activated CarbonDetected in Grand Terrace2 of 9 certified
- PFHxS14 ng/L–No claim on record
- PFOA18 ng/L✓Certified for this compound
- PFOS19 ng/L✓Certified for this compound
- PFBS13 ng/L–No claim on record
- PFHxA14 ng/L–No claim on record
- PFBA10 ng/L–No claim on record
- PFHpA8.2 ng/L–No claim on record
- PFPeA17 ng/L–No claim on record
- PFPeS4 ng/L–No claim on record
CertifiedNSF/ANSI 53 · PFOA, PFOSNSF/ANSI 42NSF/ANSI 401
Certified for PFOA, PFOS; not established for PFHxS, PFBS, PFHxA, PFBA, PFHpA, PFPeA, PFPeS.
- 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 9 compounds detected here. A tap test first tells you which ones reach your glass.
Questions
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Is there PFAS in Grand Terrace tap water?
In EPA's UCMR 5 testing of RIVERSIDE HIGHLAND WATER COMPANY (2024-07-22 to 2025-01-09): PFBA 10 ng/L (no federal or state limit), PFBS 13 ng/L (EPA health advisory 2,000), PFHpA 8.2 ng/L (no federal or state limit), PFHxA 14 ng/L (state limit 400,000), PFHxS 14 ng/L (limit 10), PFOA 18 ng/L (limit 4), PFOS 19 ng/L (limit 4), PFPeA 17 ng/L (no federal or state limit), PFPeS 4 ng/L (no federal or state limit) and the other 20 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: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057)US EPA · 2026-01-15View source ↗
- State SDWIS Compliance RecordLead & Copper Rule 90th-percentile: RIVERSIDE HIGHLAND WATER COMPANY (CA3610057)US EPA SDWIS · 2026-07-09View source ↗