We read 8 results from Palmdale Water Dist.’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 126,804 people · Water system ID CA1910102 · Read the district’s 2025 report (opens in a new tab)
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Results from the 2025 report
Each number is copied from the district’s report and links to the page it’s printed on. Where the report lists several plants, wells or purchased water, the highest is shown.
| Contaminant | Result | Health goal | Legal limit | What it means |
|---|---|---|---|---|
| Chromium-6average · range 0.5 to 9 · Groundwater wells · 2025 report, page 3 | 4 ppb | 0.02 ppb | 10 ppb | Above the health goal200x the health goal |
| Copper90th percentile of 50 homes tested, 0 over the action level · Customer taps (50 samples) · 2025 report, page 3 | 0.4 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.3x the health goal |
| Chlorinehighest running annual average · range 0.3 to 3.6 · Distribution system · 2025 report, page 3 | 1 ppm | None set | 4 ppm | Below the legal limit |
| Disinfection byproducts (HAA5)highest running annual average · range ND to 13 · Distribution system · 2025 report, page 3 | 10 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 27 to 89 · Distribution system · 2025 report, page 3 | 67 ppb | None set | 80 ppb | Below the legal limit |
| Lead90th percentile of 50 homes tested, 0 over the action level · Customer taps (50 samples) · 2025 report, page 3 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)average · range ND to 6 · Groundwater wells · 2025 report, page 3 | 2 ppm | 10 ppm | 10 ppm | Below the health goal |
| Turbidity (cloudiness)highest measured · Treatment plant · 2025 report, page 3 | 0.1 NTU | None set | 1 NTU | Below the legal limit |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Palmdale Water Dist.’s water between Jun 2024 and Mar 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFBS4.5 pptFound in 1 of 12 samples · highest resultNo federal limit in force for this one
Source: EPA UCMR 5 occurrence data. The highest single result is shown; one high sample doesn’t mean every glass is that high.
What you can do
Nothing here is an emergency notice: if the district has a violation, it must tell customers directly. If you’d like to lower these at your tap, these are the treatments that remove them, and the catalog shows the models certified for each. Ranking is by certified removal; commissions never change the order.
Copper
Found: Copper
What removes it: Reverse osmosis.
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