What was found in Palmdale's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 925900 µg/L 9259% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019 | 8/8 | SYR4 |
| Nitrate | 4113.2 µg/L 41% of the EPA limit 10000 µg/L Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 13560 µg/L — WHITE FENCE FARMS MWC NO. 1 · 1,518 people · 2019 | 8/8 | SYR4 |
| Fluoride | 378.6 µg/L 9.5% of the EPA limit 4000 µg/L Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 426 µg/L — SHADOW ACRES MUTUAL WATER COMPANY · 450 people · 2017 | 8/8 | SYR4 |
| Selenium | 162 µg/L 324% of the EPA limit, at the 95th percentile of samples — 50 µg/L Highest in the city: ALPINE SPRINGS MOBILE HOME PARK · 175 people · 2017 | 4/8 | SYR4 |
| Barium | 120 µg/L 6% of the EPA limit 2000 µg/L Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 139 µg/L — ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 5/8 | SYR4 |
| Copper | 100 µg/L 7.7% of the EPA limit 1300 µg/L Highest in the city: WESTSIDE PARK MUTUAL WATER · 495 people · 2018 | 2/8 | SYR4 |
| TTHM | 76 µg/L 95% of the EPA limit 80 µg/L Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 77.3 µg/L — ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 4/8 | SYR4 |
| Chloroform | 12 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 37.09 µg/L — EL DORADO MUTUAL WATER CO. · 660 people · 2019 | 4/8 | SYR4 |
| Arsenic | 6.26 µg/L 63% of the EPA limit 10 µg/L Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 36.27 µg/L — ALPINE SPRINGS MOBILE HOME PARK · 175 people · 2017 | 5/8 | SYR4 |
| Dibromochloromethane | 29 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 32 µg/L — ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 4/8 | SYR4 |
| Bromoform | 22 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 28 µg/L — ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 4/8 | SYR4 |
| Bromodichloromethane | 19 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019 | 4/8 | SYR4 |
| Chromium | 10 µg/L 10% of the EPA limit 100 µg/L Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 18 µg/L — WHITE FENCE FARMS MWC NO. 1 · 1,518 people · 2019 | 3/8 | SYR4 |
| Total Haloacetic Acids (HAA5) | 12 µg/L 20% of the EPA limit 60 µg/L Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 17 µg/L — ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 4/8 | SYR4 |
| Combined Uranium | 6.17725 µg/L 21% of the EPA limit 30 µg/L Main supplier: PALMDALE WATER DIST. · 126,804 people · 2016
Highest in the city: 16.837 µg/L — WHITE FENCE FARMS MWC NO. 1 · 1,518 people · 2019 | 8/8 | SYR4 |
| Dibromoacetic Acid | 7.1 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 13 µg/L — ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 4/8 | SYR4 |
| Trichloroacetic Acid | 13 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019 | 3/8 | SYR4 |
| Bromate | 12.685 µg/L 127% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the city: ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 1/8 | SYR4 |
| Gross Beta Particle Activity | 9.46 pCi/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019 | 2/8 | SYR4 |
| Dichloroacetic Acid | 3.4 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 6.07 µg/L — ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 4/8 | SYR4 |
| Monochloroacetic Acid | 2.7 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019 | 1/8 | SYR4 |
| Monobromoacetic Acid | 1.9 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2019
Highest in the city: 2.56 µg/L — ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 4/8 | SYR4 |
| Dichloromethane | 1.63 µg/L 33% of the EPA limit 5 µg/L Highest in the city: ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 1/8 | SYR4 |
| Combined Radium (-226 And -228) | 0.0973 pCi/L 1.9% of the EPA limit 5 pCi/L Highest in the city: SHADOW ACRES MUTUAL WATER COMPANY · 450 people · 2018 | 1/8 | SYR4 |
| Heptachlor Epoxide | 0.0158 µg/L 7.9% of the EPA limit 0.2000 µg/L Highest in the city: ANTELOPE VALLEY EAST KERN WATER AGENCY · 0 people · 2019 | 1/8 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: PALMDALE WATER DIST. · 126,804 people · 2024
Highest in the city: 0.0070 mg/L — SUNNYSIDE FARMS MUTUAL WATER COMPANY · 436 people · 2026 | 7/8 | LCR |
| Pfhxa | 0.0063 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2025 | 1/8 | UCMR-5 |
| Pfpea | 0.0046 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2025 | 1/8 | UCMR-5 |
| PFBS | 0.0045 µg/L No EPA limit set Main supplier: PALMDALE WATER DIST. · 126,804 people · 2025 | 1/8 | UCMR-5 |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Palmdale
| Supplier | Population served |
|---|---|
| PALMDALE WATER DIST. | 126,804 |
| WHITE FENCE FARMS MWC NO. 1 | 1,518 |
| EL DORADO MUTUAL WATER CO. | 660 |
| WESTSIDE PARK MUTUAL WATER | 495 |
| SHADOW ACRES MUTUAL WATER COMPANY | 450 |
| SUNNYSIDE FARMS MUTUAL WATER COMPANY | 436 |
| ALPINE SPRINGS MOBILE HOME PARK | 175 |
| ANTELOPE VALLEY EAST KERN WATER AGENCY | 0 |
Frequently asked questions about Palmdale tap water
Is Palmdale tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Palmdale. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Palmdale?
8 public water suppliers report drinking-water monitoring for Palmdale, California to the EPA. Each is listed above with its population served.
What contaminants are in Palmdale's water?
The contaminants EPA monitoring detected in Palmdale include Nitrate-Nitrite, Nitrate, Fluoride, Selenium, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.