Drinking water quality · 2024
· Verified
What's in Hesperia, CA tap water
35 contaminants were measured in the Hesperia, CA water system's 2024 annual report. Each is shown below against its federal limit.
- Reporting year
- 2024
- Contaminants measured
- 35
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
PFAS — EPA UCMR5 (2023–2025)
3 PFAS compounds above EPA limits in Hesperia, 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, 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, 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 |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| OdorA measure of detectable smell in the water. | 1AverageSystem-wide | 3MCL | Within the limit |
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 170 mg/LAverageSystem-wide | 1000 mg/LMCL | Within the limit |
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 262AverageSystem-wide | 1600MCL | Within the limit |
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.17 NTUAverageSystem-wide | 5 NTUMCL | Within the limit |
| AlkalinityA measure of the water's capacity to neutralize acids. | 67 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| Bicarbonate | 82 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 94 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 7.3AverageSystem-wide | None set | Detected — no federal limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 0–4.88 pCi/LRangeSystem-wide | 15 pCi/LMCL | Within the limit |
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | Not detected pCi/LAverageSystem-wide | 5 pCi/LMCL | Within the limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 0.45 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
Inorganic chemicals
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chromium, TotalTotal chromium — the sum of all chromium forms, from natural deposits and industrial discharge. | 0.37 ug/LAverageSystem-wide | 10 ug/LMCL | Within the limit |
| CalciumA naturally occurring mineral that contributes to water hardness. | 30 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 0–10 ug/LRangeSystem-wide | None set | Detected — no federal limit |
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 4.5 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| PotassiumA naturally occurring mineral from rock and soil. | 1.5 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 16 mg/LAverageSystem-wide | None set | Detected — no federal limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0Reported levelSystem-wide | 0MCL | None detected |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0Reported levelSystem-wide | 0Public health goal | None detected |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' | 0–1.2 ng/LRangeSystem-wide | None set | Detected — no federal limit |
People also ask about Hesperia, CA's water
+Is Hesperia, CA tap water safe to drink in 2024?
Every one of the 35 contaminants measured in Hesperia, CA's 2024 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Hesperia, CA tap water?
35 contaminants were measured in Hesperia, CA's 2024 Consumer Confidence Report, spanning metals, physical & aggregate, and pfas ("forever chemicals"). 19 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from Hesperia, CA's 2024 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, 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 2024 report; a new report will replace it once the utility publishes its next annual update.