We read 17 results from Cal/Am Water Company - Baldwin Hills’s 2025 water quality report. No results over a legal limit; 6 above a health goal or guideline.
Serves about 20,724 people · Water system ID CA1910052 · 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 ND to 1.6 · Baldwin Hills wells (52%) · 2025 report, page 6 | 0.8 ppb | 0.02 ppb | 10 ppb | Above the health goal40x the health goal |
| Gross alpha (radioactivity)average · range 1.2 to 3.5 · Baldwin Hills wells (52%) · 2025 report, page 6 | 2.3 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of 32 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 3 | 3 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal15x the health goal |
| Total dissolved solidsaverage · range 456 to 617 · MWDSC Weymouth WTP (48%), highest of 2 sources · 2025 report, page 7 | 536 ppm | — | 500 ppm guideline | Above the guideline1.1x the guideline (taste, odor or stains; not a health limit) |
| Trichloroethylene (TCE)average · range ND to 4.2 · Baldwin Hills wells (52%) · 2025 report, page 6 | 2.4 ppb | 1.7 ppb | 5 ppb | Above the health goal1.4x the health goal |
| Uraniumaverage · range 2.24 to 2.98 · printed as 1.8 pCi/L · Baldwin Hills wells (52%) · 2025 report, page 6 | 2.68 ppb | 0.6 ppb | 30 ppb | Above the health goal4.5x the health goal |
| Chloraminehighest running annual average · range 1.1 to 3.1 · Distribution system · 2025 report, page 5 | 2.6 ppm | None set | 4 ppm | Below the legal limit |
| Chlorideaverage · range 86 to 98 · MWDSC Weymouth WTP (48%), highest of 2 sources · 2025 report, page 7 | 92 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorinehighest running annual average · range 1.1 to 1.36 · Distribution system · 2025 report, page 5 | 1.29 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 32 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 3 | 0.28 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 1.5 to 12 · Distribution system · 2025 report, page 5 | 6.6 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 10 to 31 · Distribution system · 2025 report, page 5 | 22 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · range 0.5 to 0.8 · MWDSC Weymouth WTP (48%), highest of 2 sources · 2025 report, page 6 | 0.7 ppm | 1 ppm | 2 ppm | Below the health goal |
| Nitrate (as N)average · range 0.2 to 2.7 · Baldwin Hills wells (52%) · 2025 report, page 6 | 1.5 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfateaverage · range 139 to 212 · MWDSC Weymouth WTP (48%), highest of 2 sources · 2025 report, page 7 | 176 ppm | — | 250 ppm guideline | Within the guideline |
| Turbidity (cloudiness)average · MWDSC Weymouth WTP (48%) · 2025 report, page 4 | 0.07 NTU | None set | 1 NTU | Below the legal limit |
| Conductivityaverage · range 754 to 981 · MWDSC Weymouth WTP (48%), highest of 2 sources · 2025 report, page 7 | 868 µS/cm | 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Cal/Am Water Company - Baldwin Hills’s water between Jun 2023 and Nov 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium27 ppbFound in 7 of 14 samples · highest resultAbove EPA’s health reference level of 10 ppb (a guide, not a legal limit)
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), Uranium
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
Salty taste / high TDS
Found: Total dissolved solids
What removes it: Reverse osmosis.
Industrial chemicals and pesticides
Found: Trichloroethylene (TCE)
What removes it: Carbon block or RO.
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