Drinking water quality · 2026
· Verified
What's in Hesperia Wd, CA tap water
35 contaminants were measured in the Hesperia Wd, CA water system's 2026 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2026
- Contaminants measured
- 35
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Chromium, Hexavalent
- Service area
- CA
PFAS — EPA UCMR5 (2023–2025)
3 PFAS compounds above EPA limits in Hesperia Wd, CA
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
PFOS (Perfluorooctane sulfonic acid)
● Over EPA limit (2.8×)near national p90 (19.900000000000006 ng/L across detecting U.S. systems)
PFOA (Perfluorooctanoic acid)
● Over EPA limit (2.6×)near national p90 (13.649999999999999 ng/L across detecting U.S. systems)
PFHxS (Perfluorohexane sulfonic acid)
● Over EPA limit (1.1×)near national p90 (12.049999999999997 ng/L across detecting U.S. systems)
PFHpA
● Detected (no federal limit)below national p90 (9.309999999999999 ng/L across detecting U.S. systems)
6:2 FTS
● Detected (no federal limit)above national p90 (0.03898000000000001 µg/L across detecting U.S. systems)
PFHxA
● Detected (no federal limit)below national p90 (12.190000000000003 ng/L across detecting U.S. systems)
PFPeA
● Detected (no federal limit)below national p90 (15.95999999999999 ng/L across detecting U.S. systems)
Lithium
● Detected (no federal limit)below national p90 (76.59999999999991 mg/L across detecting U.S. systems)
Where your water comes from · EPA SDWIS
Hesperia Wd, CA's drinking water comes from ground water, drawn from 16 sources.
Source
- WELL · 12
- WELL 03-A
- WELL 29
- WELL 15-A
- + 1 more
Treatment
- WELL 19A - CHLORINATED
- WELL 03-A - TREATED (CL2)
- WELL 05A - TREATED (CL2)
- + 13 more
Distribution
Also buys water from MOJAVE WATER AGENCY.
Historical readings · EPA Six-Year Review (2012–2019)
11 historically-detected contaminants in Hesperia Wd, CA
Every U.S. public water system reports compliance-monitoring data to EPA. The Six-Year Review releases the 2012–2019 window as a single dataset — here's what your system reported, year by year. Values shown are the highest detection per analyte per year, compared to the federal MCL.
| Contaminant | Worst detection | EPA limit | Years (2012–2019) |
|---|---|---|---|
ARSENIC worst: 2013 | 0.0052 mg/L within below national p90 | 0.01 mg/L | '12'13'14'15'16'17'18'19 |
NITRATE worst: 2015 | 2.94 mg/L within | 10 mg/L | '12'13'14'15'16'17'18'19 |
NITRATE NITRITE worst: 2018 | 2.8 mg/L within | 10 mg/L | '17'18'19 |
CHROMIUM worst: 2017 | 0.021 mg/L within 2.1× the national p90 | 0.1 mg/L | '12'13'15'17'18'19 |
FLUORIDE worst: 2012 | 0.78 mg/L within | 4 mg/L | '12'13'14'15'17'18'19 |
TTHM worst: 2015 | 0.0044 mg/L within | 0.08 mg/L | '13'14'15'18'19 |
URANIUM worst: 2015 | 0.00343 ug/L within below national p90 | 30 ug/L | '15 |
BROMOFORM worst: 2013 | 0.002 mg/L | — | '13'14'19 |
COPPER worst: 2013 | 0.17 mg/L below national p90 | — | '13 |
LEAD worst: 2013 | 0.017 mg/L | — | '13 |
CHLOROFORM worst: 2014 | 0.0034 mg/L | — | '14'15'18 |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 18 UG/LAverageSource water | 10 UG/LMCL | At or above the limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BromodichloromethaneA trihalomethane disinfection byproduct. | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | Not detected UG/LHighest single sampleDistribution | 60 UG/LMCL | None detected |
| DibromochloromethaneA trihalomethane disinfection byproduct. | 0.8 UG/LAverageDistribution | None set | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitriteA compound from fertilizer runoff, sewage, and erosion of natural deposits. | Not detected MG/LHighest single sampleSource water | 1 MG/LMCL | None detected |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Dbaa | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| Dcaa | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| Mbaa | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| Mcaa | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| Tcaa | Not detected UG/LHighest single sampleDistribution | None set | None detected |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid, a chlorinated PFAS compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)ADONA, a newer-generation PFAS replacement compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 4:2 Fluorotelomer sulfonic acid (4:2 FTS)4:2 fluorotelomer sulfonic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 8:2 Fluorotelomer sulfonic acid (8:2 FTS)8:2 fluorotelomer sulfonic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid, a chlorinated PFAS compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Hexafluoropropylene oxide dimer acidHFPO-DA ('GenX chemicals'), a newer-generation PFAS replacement compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoro-3-methoxypropanoic acid (PFMPA)Perfluoro-3-methoxypropanoic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoro-4-methoxybutanoic acid (PFMBA)Perfluoro-4-methoxybutanoic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)Perfluoro(2-ethoxyethane)sulfonic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorodecanoic acid (PFDA)Perfluorodecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorododecanoic acid (PFDoA)Perfluorododecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoroheptanesulfonic acid (PFHpS)Perfluoroheptanesulfonic acid, a PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorononanoic acidPerfluorononanoic acid, a PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoropentanesulfonic acid (PFPeS)Perfluoropentanesulfonic acid, a PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoroundecanoic acid (PFUnA)Perfluoroundecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
People also ask about Hesperia Wd, CA's water
+Is Hesperia Wd, CA tap water safe to drink in 2026?
The 2026 Consumer Confidence Report for the Hesperia Wd, CA water utility lists 1 contaminant at or above the federal limit: Chromium, Hexavalent. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in Hesperia Wd, CA tap water?
35 contaminants were measured in Hesperia Wd, CA's 2026 Consumer Confidence Report, spanning pfas ("forever chemicals"), disinfection byproducts, and other. 6 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in Hesperia Wd, CA tap water?
One contaminant in Hesperia Wd, CA's 2026 report sits at or above the federal limit: Chromium, Hexavalent (1.8× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in Hesperia Wd, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2026 report is Chromium, Hexavalent, at 1.8× the federal threshold. It belongs to the metals family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from Hesperia Wd, CA's 2026 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Hesperia Wd, CA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2026 report; a new report will replace it once the utility publishes its next annual update.