PFOS
2.8× the limitPerfluorooctanesulfonic acid
11.1ng/L
Each block = 4.0 ng/L federal MCL (2024)
EPA UCMR 5 · sampled 2023Evidence
City water report · 2026
Is Hesperia 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); lithium sits above a screening level. Hesperia Water District serves 101,836 residents.
Likely match, check your bill
HESPERIA WD serves Hesperia
Your water bill or annual water quality report names your actual supplier.
- Source
- Groundwater
- Lead service lines
- 0 lead
- HESPERIA WDThis reportCA3610024 · 101,836 served
Your water utility
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.
PFOA
2.5× the limitPerfluorooctanoic acid
10.2ng/L
Each block = 4.0 ng/L federal MCL (2024)
EPA UCMR 5 · sampled 2023Evidence
PFHxS
1.1× the limitPerfluorohexanesulfonic acid
10.5ng/L
Each block = 10 ng/L federal MCL (2024)
EPA UCMR 5 · sampled 2023Evidence
Coverage by group
31 results on record- PFAS (forever chemicals)3 above · 4 detected · 22 not detected
- Metals & lead1 not detected
- Disinfection by-productsNot monitored
- Other1 above
Every detected result
8 detected results, by distance from their limit
HESPERIA WD (EPA PWSID CA3610024) delivers groundwater to 101,836 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.
- Perfluorooctanesulfonic acid (PFOS)EPA UCMR 5 · 20234.0 ng/L federal MCL (2024)11.1ng/LAbove limit
- Perfluorooctanoic acid (PFOA)EPA UCMR 5 · 20234.0 ng/L federal MCL (2024)10.2ng/LAbove limit
- Perfluorohexanesulfonic acid (PFHxS)EPA UCMR 5 · 202310 ng/L federal MCL (2024)10.5ng/LAbove limit
- LithiumEPA UCMR 5 · 202310 µg/L EPA health reference level (screening, not a legal limit)10.2µg/LAbove screening
- Perfluorohexanoic acid (PFHxA)EPA UCMR 5 · 2023400,000 ng/L Michigan EGLE state MCL (strictest US state)5.4ng/LWithin reference
- 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)EPA UCMR 5 · 2023No federal or state limit; shown for transparency50.3ng/LDetected · no limit
- Perfluoroheptanoic acid (PFHpA)EPA UCMR 5 · 2023No federal or state limit; shown for transparency3.1ng/LDetected · no limit
- Perfluoropentanoic acid (PFPeA)EPA UCMR 5 · 2023No federal or state limit; shown for transparency4.2ng/LDetected · no limit
23 other contaminants tested, none detected
- 11Cl-PF3OUdS
- 4:2 FTS
- 8:2 FTS
- 9Cl-PF3ONS
- ADONA
- HFPO-DA (GenX)
- NEtFOSAA
- NFDHA
- NMeFOSAA
- PFBA
- PFBS
- PFDA
- PFDoA
- PFEESA
- PFHpS
- PFMBA
- PFMPA
- PFNA
- PFPeS
- PFTA
- PFTrDA
- PFUnA
- 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
- 01 · TestTest your own tap
A tap test can confirm levels at your home before you choose treatment.
Certified labHow to test your tap → - 02 · Treat PFASReverse osmosis, or carbon certified for PFAS
PFOS 11.1 ng/L, above the 4 ng/L limit (+6 more PFAS detected)
NSF/ANSI 58 or 53, with PFHxS/PFOA/PFOS/PFHxA/6:2 FTS/PFHpA/PFPeA named on the listingTreatment for PFAS → - 03 · LithiumDepends on the contaminant
Lithium 10.2 µg/L, above the 10.0 µg/L EPA health reference level
The certifier's listing for each named contaminantTreatment for Lithium →
Test your own tap
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.
Screening: quick check, not lab-grade
Watersafe Drinking Water Test Kit
Silver Lake Research
Lead, bacteria, nitrate, copper, iron, chlorine, hardness and pH
- Turnaround: Minutes; the bacteria test can take up to 48 hours
What it can't tell you: Each test gives a yes/no or a rough range, not a lab number, and it cannot detect PFAS or arsenic.
Lab-certified results
ETR Labs Basic Water Quality Test Kit
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
- Analyzed by Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638
- Turnaround: 2–4 business days after the lab receives it
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.
When your results arrive, read them here →
Commercial
Certified for a concern found here
Each card names which Hesperia 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, Lithium, 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
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, Lithium, 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 all 9 products certified for a Hesperia concern →
Countertop System
Aquasana Clean Water Machine Countertop Filter (AQ-CWM2)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, 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
Countertop System
Patriot Pure Ultimate Water Filtration System
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, 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
Countertop System
AquaTru Carafe Countertop Reverse-Osmosis Purifier (AT100)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, 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
Countertop System
AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, 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
Under-Sink Filter
Waterdrop G3P600 Tankless Reverse-Osmosis System
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, 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
Under-Sink Filter
Waterdrop G3P800 Tankless Reverse-Osmosis System
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, 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
Refrigerator Filter
Whirlpool Filter 3 Refrigerator Water Filter (WHR3RXD1)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, 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
Questions
Frequently asked questions
Is Hesperia tap water safe to drink?
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Hesperia, PFOS 11.1 ng/L (limit 4 ng/L), PFOA 10.2 ng/L (limit 4 ng/L) and PFHxS 10.5 ng/L (limit 10 ng/L) were measured above their limits in EPA's 2024 testing. HESPERIA WD (PWSID CA3610024) 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 Hesperia?
HESPERIA WD (PWS ID CA3610024) is the public water system on record for Hesperia, California, serving about 101,836 people. Confirm the utility on your water bill before acting on a specific finding.
Where does Hesperia get its drinking water?
Groundwater (primary source of record in EPA SDWIS).
Are PFAS "forever chemicals" in Hesperia's water?
Yes. In EPA's UCMR 5 testing (2023-07-19 to 2025-01-15), PFOS was measured at 11.1 ng/L against a 4 ng/L federal limit, PFOA was measured at 10.2 ng/L against a 4 ng/L federal limit and PFHxS was measured at 10.5 ng/L against a 10 ng/L federal limit. PFHxA (5.4 ng/L, below the 400,000 ng/L state limit) was also detected. 6:2 FTS (50.3 ng/L), PFHpA (3.1 ng/L) and PFPeA (4.2 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.
Is there lead in Hesperia's tap water?
Lead is not in Hesperia'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 Hesperia water report show?
PurityMap's current record for Hesperia holds 31 findings: 4 above a reference, 1 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
Follow Hesperia's water
One email when a new sampling round is published, a result moves above or below its reference, or the system's score changes.
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Sources and dataAll 31 records and their sourcesEPA UCMR 5 · EPA SDWIS (Lead & Copper Rule)
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 11.1 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluorooctanoic acid (PFOA) | 10.2 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluorohexanesulfonic acid (PFHxS) | 10.5 ng/L | 10 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Lithium | 10.2 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2023-07-12 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluorohexanoic acid (PFHxA) | 5.4 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | 50.3 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluoroheptanoic acid (PFHpA) | 3.1 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluoropentanoic acid (PFPeA) | 4.2 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
23 other contaminants tested — none detected
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| 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 | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| 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 | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| 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 | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| 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 | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | Not detected above the reporting limit | 2023–2025 monitoring period | Lead & Copper Rule 90th-percentile: HESPERIA WD (CA3610024) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-19 to 2025-01-15 | UCMR5 Analytical Results: HESPERIA WD (CA3610024) |
Perfluorooctanesulfonic acid (PFOS)
- Result
- 11.1 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Above a historical reference; current applicability unverified
- Sampled
- 2023-07-19 to 2025-01-15
- Result
- 10.2 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Above a historical reference; current applicability unverified
- Sampled
- 2023-07-19 to 2025-01-15
Perfluorohexanesulfonic acid (PFHxS)
- Result
- 10.5 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Above a historical reference; current applicability unverified
- Sampled
- 2023-07-19 to 2025-01-15
- Result
- 10.2 µg/L
- Benchmark
- 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit
- Status
- Above the referenced health-based guidance value
- Sampled
- 2023-07-12 to 2025-01-15
Perfluorohexanoic acid (PFHxA)
- Result
- 5.4 ng/L
- Benchmark
- 400,000 ng/L Michigan EGLE state MCL (strictest US state)
- Status
- Within a historical reference; current applicability unverified
- Sampled
- 2023-07-19 to 2025-01-15
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- Result
- 50.3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Detected, no limit
- Sampled
- 2023-07-19 to 2025-01-15
Perfluoroheptanoic acid (PFHpA)
- Result
- 3.1 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Detected, no limit
- Sampled
- 2023-07-19 to 2025-01-15
Perfluoropentanoic acid (PFPeA)
- Result
- 4.2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Detected, no limit
- Sampled
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
- Result
- Non-Detect (ND)
- Benchmark
- 15 µg/L federal action level
- Status
- Not detected above the reporting limit
- Sampled
- 2023–2025 monitoring period
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
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
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
- 2023-07-19 to 2025-01-15
Perfluorobutanesulfonic acid (PFBS)
- Result
- < 3 ng/L
- Benchmark
- 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit
- Status
- Not detected above the reporting limit
- Sampled
- 2023-07-19 to 2025-01-15
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-07-19 to 2025-01-15
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-07-19 to 2025-01-15
Perfluorododecanoic acid (PFDoA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-07-19 to 2025-01-15
Perfluoroheptanesulfonic acid (PFHpS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-07-19 to 2025-01-15
- Result
- < 4 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2023-07-19 to 2025-01-15
Perfluoropentanesulfonic acid (PFPeS)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-07-19 to 2025-01-15
Perfluorotetradecanoic acid (PFTA)
- Result
- < 8 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-07-19 to 2025-01-15
Perfluorotridecanoic acid (PFTrDA)
- Result
- < 7 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-07-19 to 2025-01-15
Perfluoroundecanoic acid (PFUnA)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-07-19 to 2025-01-15
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: HESPERIA WD (CA3610024)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: HESPERIA WD (CA3610024)
US EPA SDWIS
Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.
Something off with your water's smell, color or taste?
Start with the hot-or-cold tap check. Where Hesperia Water District reported something related, it's shown below.
- Rotten-egg smell
- Cloudy or milky water
- Chlorine smell
- Brown or yellow water
- Metallic taste
Lead at Hesperia Water District: not detected (90th percentile, 2023–2025 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.
ZIP codes in Hesperia
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.