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BIG BEAR CITY CSDlisted match
City water report · 2026

Is Big Bear City Tap Water Safe? 2026 Water Quality Report

Short answer: Three PFAS, PFHxS, PFOA and PFOS, are above their federal limits (2024 limits that water systems have until at least 2029 to meet); 3 more are detected with no federal limit, and everything else measured is within its reference or not detected. Big Bear City CSD serves 12,738 residents.

Explore the findingsWhat can I do?Follow
Listed match

BIG BEAR CITY CSD serves Big Bear City

EPA lists this system for the city. Your water bill or annual water quality report names your actual supplier.

Source
Groundwater
Lead service lines
0 lead, 4,578 unknown

Source: EPA SDWIS 2026Q2.

  • BIG BEAR CITY CSDThis report
    CA3610008 · 12,738 served
What stands out

Three PFAS above the 2024 federal limit

Each bar is drawn in blocks of its own limit, so the length shows how far above it the result sits.

PFHxS

Perfluorohexanesulfonic acid

3.6× the limit

36ng/L

Each block = 10 ng/L federal MCL (2024)

EPA UCMR 5 · sampled 2024Evidence
PFOS

Perfluorooctanesulfonic acid

2.5× the limit

9.9ng/L

Each block = 4.0 ng/L federal MCL (2024)

EPA UCMR 5 · sampled 2024Evidence
PFOA

Perfluorooctanoic acid

1.1× the limit

4.5ng/L

Each block = 4.0 ng/L federal MCL (2024)

EPA UCMR 5 · sampled 2024Evidence

Coverage by group

31 results on record
  • PFAS (forever chemicals)3 above · 5 detected · 21 not detected
  • Metals & lead1 not detected
  • Disinfection by-productsNot monitored
  • Other1 not detected
Every detected result

8 detected results, by distance from their limit

BIG BEAR CITY CSD (EPA PWSID CA3610008) delivers groundwater to 12,738 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.

23 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
  • PFHpS
  • PFMBA
  • PFMPA
  • PFNA
  • PFTA
  • PFTrDA
  • PFUnA
  • Lithium
  • Lead (90th percentile)
Track record

0health-based violations in the last 10 years

From EPA SDWIS. A clean violation history means no enforcement action was recorded; it does not cover contaminants without a limit.

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.

What you can do

Test first, then treat what was found

  1. 01 · TestTest your own tap

    A tap test can confirm levels at your home before you choose treatment.

    Certified lab
    How to test your tap →
  2. 02 · Treat PFASReverse osmosis, or carbon certified for PFAS

    PFHxS 36 ng/L, above the 10 ng/L limit (+7 more PFAS detected)

    NSF/ANSI 58 or 53, with PFHxS/PFOA/PFOS/PFBS/PFHxA/PFHpA/PFPeA/PFPeS named on the listing
    Treatment for PFAS →

Understand water treatment technologies →

Commercial

Certified for a concern found here

Each card names which Big Bear City 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: PFHxS, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 3 more
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 the evidenceCheck price on Amazon
Under-Sink Filter

Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M)

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Not established: PFHxS, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 3 more
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 the evidenceCheck price on Amazon
See all 9 products certified for a Big Bear City concern →
Countertop System

Aquasana Clean Water Machine Countertop Filter (AQ-CWM2)

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Not established: PFHxS, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 3 more
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
See the evidenceCheck price on Amazon
Countertop System

Patriot Pure Ultimate Water Filtration System

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Not established: PFHxS, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 3 more
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
See the evidenceCheck price on Amazon
Countertop System

AquaTru Carafe Countertop Reverse-Osmosis Purifier (AT100)

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Not established: PFHxS, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 3 more
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
See the evidenceCheck price on Amazon
Countertop System

AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Not established: PFHxS, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 3 more
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
See the evidenceCheck price on Amazon
Under-Sink Filter

Waterdrop G3P600 Tankless Reverse-Osmosis System

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Not established: PFHxS, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 3 more
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 the evidenceCheck price on Amazon
Under-Sink Filter

Waterdrop G3P800 Tankless Reverse-Osmosis System

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Not established: PFHxS, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 3 more
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 the evidenceCheck price on Amazon
Refrigerator Filter

Whirlpool Filter 3 Refrigerator Water Filter (WHR3RXD1)

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Not established: PFHxS, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 3 more
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
See the evidenceCheck price on Amazon
Questions

Frequently asked questions

Is Big Bear City tap water safe to drink?

PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Big Bear City, PFHxS 36 ng/L (limit 10 ng/L), PFOS 9.9 ng/L (limit 4 ng/L) and PFOA 4.5 ng/L (limit 4 ng/L) were measured above their limits in EPA's 2024 testing. BIG BEAR CITY CSD (PWSID CA3610008) has a Purity Score of 57/100 (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 Big Bear City?

BIG BEAR CITY CSD (PWS ID CA3610008) is the public water system on record for Big Bear City, California, serving about 12,738 people. Confirm the utility on your water bill before acting on a specific finding.

Where does Big Bear City get its drinking water?

Groundwater (primary source of record in EPA SDWIS).

Are PFAS "forever chemicals" in Big Bear City's water?

Yes. In EPA's UCMR 5 testing (2024-03-06 to 2024-12-17), PFHxS was measured at 36 ng/L against a 10 ng/L federal limit, PFOS was measured at 9.9 ng/L against a 4 ng/L federal limit and PFOA was measured at 4.5 ng/L against a 4 ng/L federal limit. PFBS (9.2 ng/L, below the 2,000 ng/L EPA health advisory) and PFHxA (11 ng/L, below the 400,000 ng/L state limit) were also detected. PFHpA (3.5 ng/L), PFPeA (12 ng/L) and PFPeS (7.4 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.

Is there lead in Big Bear City's tap water?

Lead is not in Big Bear City'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 Big Bear City water report show?

PurityMap's current record for Big Bear City holds 31 findings: 3 above a reference, 2 detected within the reference, 3 detected with no limit and 23 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

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Sources and dataAll 31 records and their sourcesEPA UCMR 5 · EPA SDWIS (Lead & Copper Rule)
ContaminantResultBenchmarkStatusSampledSource
Perfluorohexanesulfonic acid (PFHxS)36 ng/L10 ng/L federal MCL (2024)Above a historical reference; current applicability unverified2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluorooctanesulfonic acid (PFOS)9.9 ng/L4.0 ng/L federal MCL (2024)Above a historical reference; current applicability unverified2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluorooctanoic acid (PFOA)4.5 ng/L4.0 ng/L federal MCL (2024)Above a historical reference; current applicability unverified2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluorobutanesulfonic acid (PFBS)9.2 ng/L2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limitWithin the referenced health-based guidance value2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluorohexanoic acid (PFHxA)11 ng/L400,000 ng/L Michigan EGLE state MCL (strictest US state)Within a historical reference; current applicability unverified2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluoroheptanoic acid (PFHpA)3.5 ng/LNo federal or state limit; shown for transparencyDetected, no limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluoropentanesulfonic acid (PFPeS)7.4 ng/LNo federal or state limit; shown for transparencyDetected, no limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluoropentanoic acid (PFPeA)12 ng/LNo federal or state limit; shown for transparencyDetected, no limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
23 other contaminants tested — none detected
ContaminantResultBenchmarkStatusSampledSource
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)< 5 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)< 5 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)< 5 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)< 2 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)< 5 ng/L10 ng/L federal MCL (2024)Not detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Lead (90th percentile)Non-Detect (ND)15 µg/L federal action levelNot detected above the reporting limit2023–2025 monitoring periodLead & Copper Rule 90th-percentile: BIG BEAR CITY CSD (CA3610008)
Lithium< 9 µg/L10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limitNot detected above the reporting limit2024-03-06 to 2024-09-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)< 5 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)< 6 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)< 20 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluoro-3-methoxypropanoic acid (PFMPA)< 4 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluoro-4-methoxybutanoic acid (PFMBA)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluorobutanoic acid (PFBA)< 5 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluorodecanoic acid (PFDA)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluorododecanoic acid (PFDoA)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluoroheptanesulfonic acid (PFHpS)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluorononanoic acid (PFNA)< 4 ng/L10 ng/L federal MCL (2024)Not detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluorotetradecanoic acid (PFTA)< 8 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluorotridecanoic acid (PFTrDA)< 7 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)
Perfluoroundecanoic acid (PFUnA)< 2 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2024-03-06 to 2024-12-17UCMR5 Analytical Results: BIG BEAR CITY CSD (CA3610008)

Perfluorohexanesulfonic acid (PFHxS)

Result
36 ng/L
Benchmark
10 ng/L federal MCL (2024)
Status
Above a historical reference; current applicability unverified
Sampled
2024-03-06 to 2024-12-17

Perfluorooctanesulfonic acid (PFOS)

Result
9.9 ng/L
Benchmark
4.0 ng/L federal MCL (2024)
Status
Above a historical reference; current applicability unverified
Sampled
2024-03-06 to 2024-12-17

Perfluorooctanoic acid (PFOA)

Result
4.5 ng/L
Benchmark
4.0 ng/L federal MCL (2024)
Status
Above a historical reference; current applicability unverified
Sampled
2024-03-06 to 2024-12-17

Perfluorobutanesulfonic acid (PFBS)

Result
9.2 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
2024-03-06 to 2024-12-17

Perfluorohexanoic acid (PFHxA)

Result
11 ng/L
Benchmark
400,000 ng/L Michigan EGLE state MCL (strictest US state)
Status
Within a historical reference; current applicability unverified
Sampled
2024-03-06 to 2024-12-17

Perfluoroheptanoic acid (PFHpA)

Result
3.5 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Detected, no limit
Sampled
2024-03-06 to 2024-12-17

Perfluoropentanesulfonic acid (PFPeS)

Result
7.4 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Detected, no limit
Sampled
2024-03-06 to 2024-12-17

Perfluoropentanoic acid (PFPeA)

Result
12 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Detected, no limit
Sampled
2024-03-06 to 2024-12-17
23 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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

Lead (90th percentile)

Result
Non-Detect (ND)
Benchmark
15 µg/L federal action level
Status
Not detected above the reporting limit
Sampled
2023–2025 monitoring period

Lithium

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
2024-03-06 to 2024-09-17

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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

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
2024-03-06 to 2024-12-17

Perfluorobutanoic acid (PFBA)

Result
< 5 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2024-03-06 to 2024-12-17

Perfluorodecanoic acid (PFDA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2024-03-06 to 2024-12-17

Perfluorododecanoic acid (PFDoA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2024-03-06 to 2024-12-17

Perfluoroheptanesulfonic acid (PFHpS)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2024-03-06 to 2024-12-17

Perfluorononanoic acid (PFNA)

Result
< 4 ng/L
Benchmark
10 ng/L federal MCL (2024)
Status
Not detected above the reporting limit
Sampled
2024-03-06 to 2024-12-17

Perfluorotetradecanoic acid (PFTA)

Result
< 8 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2024-03-06 to 2024-12-17

Perfluorotridecanoic acid (PFTrDA)

Result
< 7 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2024-03-06 to 2024-12-17

Perfluoroundecanoic acid (PFUnA)

Result
< 2 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2024-03-06 to 2024-12-17

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: BIG BEAR CITY CSD (CA3610008)

    US EPA

    Published
    2026-01-15
    Newest sample
    2024-12-17
    Findings here
    30

    View source ↗Source record

  • State SDWIS Compliance Record

    Lead & Copper Rule 90th-percentile: BIG BEAR CITY CSD (CA3610008)

    US EPA SDWIS

    Published
    2026-07-09
    Newest sample
    2025
    Findings here
    1

    View source ↗Source record

Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.

Data & methodologyHow we analyze waterData integrity policy

Something off with your water's smell, color or taste?

Start with the hot-or-cold tap check. Where Big Bear City CSD reported something related, it's shown below.

ZIP codes in Big Bear City

A ZIP code is a postal area, not a water service area. Your water bill names your supplier.