We read 8 results from Suburban Water Systems-Glendora’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 5,249 people · Water system ID CA1910046 · 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 0.9 to 2.5 · 2025 report, page 5 | 1.9 ppb | 0.004 ppb | 10 ppb | Above the health goal475x the health goal |
| Radium (combined 226 + 228)average · 2025 report, page 5 | 0.2 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Uraniumaverage · printed as 2.5 pCi/L · 2025 report, page 5 | 3.73 ppb | 0.6 ppb | 30 ppb | Above the health goal6.2x the health goal |
| Aluminumaverage · range ND to 0.06 · highest of 2 sources · 2025 report, page 5 | 0.02 ppm | — | 0.2 ppm guideline | Within the guideline |
| Chlorideaverage · range 47 to 57 · 2025 report, page 5 | 52 ppm | — | 250 ppm guideline | Within the guideline |
| Fluorideaverage · range ND to 0.36 · 2025 report, page 5 | 0.1 ppm | 1 ppm | 2 ppm | Below the health goal |
| Sulfateaverage · range 16 to 28 · 2025 report, page 5 | 22 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidsaverage · range 160 to 210 · 2025 report, page 5 | 185 ppm | — | 500 ppm guideline | Within the guideline |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper.
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: Radium (combined 226 + 228), Uranium
What removes it: Reverse osmosis.
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