We read 26 results from City of Upland’s 2025 water quality report. No results over a legal limit; 6 above a health goal or guideline.
Serves about 78,376 people · Water system ID CA3610050 · 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 |
|---|---|---|---|---|
| Arsenicaverage · range ND to 1.5 · Upland water system · 2025 report, page 4 | 0.5 ppb | 0.004 ppb | 10 ppb | Above the health goal125x the health goal |
| Gross alpha (radioactivity)average · range 0.4 to 4.3 · Upland water system · 2025 report, page 4 | 1.9 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of 30 homes tested, 1 over the action level · Customer taps · 2025 report, page 4 | 2.2 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal11x the health goal |
| Radium (combined 226 + 228)average · range ND to 0.6 · Upland water system · 2025 report, page 4 | 0.3 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Tetrachloroethylene (PCE)average · range ND to 2.5 · Upland water system · 2025 report, page 4 | 0.1 ppb | 0.06 ppb | 5 ppb | Above the health goal1.7x the health goal |
| Uraniumaverage · range ND to 13 · printed as 4.4 pCi/L · Upland water system · 2025 report, page 4 | 6.56 ppb | 0.6 ppb | 30 ppb | Above the health goal11x the health goal |
| Aluminumaverage · range ND to 0.24 · Upland water system · 2025 report, page 4 | 0.02 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumaverage · range ND to 0.06 · Upland water system · 2025 report, page 4 | 0.02 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorideaverage · range ND to 55 · Upland water system · 2025 report, page 5 | 13.8 ppm | — | 250 ppm guideline | Within the guideline |
| Chromium (total)average · range ND to 2.3 · Upland water system · 2025 report, page 4 | 0.8 ppb | None set | 100 ppb | Below the legal limit |
| Copper90th percentile of 30 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 4 | 0.19 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range ND to 28 · Upland water system · 2025 report, page 4 | 14.6 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range ND to 77 · Upland water system · 2025 report, page 4 | 44.9 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · range ND to 0.4 · Upland water system · 2025 report, page 4 | 0.2 ppm | 1 ppm | 2 ppm | Below the health goal |
| Nitrate (as N)average · range 0.1 to 6 · Upland water system · 2025 report, page 4 | 4.7 ppm | 10 ppm | 10 ppm | Below the health goal |
| PFHxS (a PFAS)average · range ND to 3.2 · Upland water system · 2025 report, page 5 | 0.1 ppt | None set | 10 ppt from 2029 | Below the legal limit |
| Sulfateaverage · range ND to 55 · Upland water system · 2025 report, page 5 | 21.5 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidsaverage · range ND to 420 · Upland water system · 2025 report, page 5 | 176 ppm | — | 500 ppm guideline | Within the guideline |
| Chlorateaverage · range ND to 250 · Upland water system · 2025 report, page 5 | 32.3 ppb | None set | None | No health limit |
| Hardnessaverage · range ND to 19.9 · Upland water system · 2025 report, page 5 | 7.02 gpg (120 ppm) | — | — | Hard |
| PFBA (a PFAS)average · range ND to 3.5 · Upland water system · 2025 report, page 5 | 0.1 ppt | None set | None | No health limit |
| PFBS (a PFAS)average · range ND to 6.2 · Upland water system · 2025 report, page 5 | 0.8 ppt | None set | None | No health limit |
| PFHpA (a PFAS)average · range ND to 4.3 · Upland water system · 2025 report, page 5 | 0.1 ppt | None set | None | No health limit |
| PFHxA (a PFAS)average · range ND to 7.1 · Upland water system · 2025 report, page 5 | 1 ppt | None set | None | No health limit |
| PFPeA (a PFAS)average · range ND to 6.8 · Upland water system · 2025 report, page 5 | 1 ppt | None set | None | No health limit |
| Sodiumaverage · range ND to 39 · Upland water system · 2025 report, page 5 | 12.1 ppm | None set | None | No health 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. 2 numbers we weren’t sure about are held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in City of Upland’s water between Apr 2024 and Jan 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFBS3 pptFound in 1 of 33 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.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228), Uranium
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
Industrial chemicals and pesticides
Found: Tetrachloroethylene (PCE)
What removes it: Carbon block or RO.
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