We read 16 results from Goleta Water District’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 84,462 people · Water system ID CA4210004 · 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 |
|---|---|---|---|---|
| Sulfateaverage · range 250 to 360 · Groundwater wells, highest of 2 sources · 2025 report, page 3 | 300 ppm | — | 250 ppm guideline | Above the guideline1.2x the guideline (taste, odor or stains; not a health limit) |
| Total dissolved solidsaverage · range 620 to 850 · Groundwater wells, highest of 2 sources · 2025 report, page 3 | 770 ppm | — | 500 ppm guideline | Above the guideline1.5x the guideline (taste, odor or stains; not a health limit) |
| Uraniumaverage · range ND to 11 · printed as 2.3 pCi/L · Groundwater wells, highest of 2 sources · 2025 report, page 2 | 3.43 ppb | 0.6 ppb | 30 ppb | Above the health goal5.7x the health goal |
| Chlorideaverage · range 23 to 84 · Groundwater wells, highest of 2 sources · 2025 report, page 3 | 48 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorinesystem-wide average · range 0.51 to 2.2 · Distribution system · 2025 report, page 2 | 1.28 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 31 homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.28 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)system-wide average · range 7 to 17 · Distribution system · 2025 report, page 2 | 16 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)system-wide average · range 20 to 41 · Distribution system · 2025 report, page 2 | 39 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · Surface water (Lake Cachuma, Corona del Mar plant), highest of 2 sources · 2025 report, page 2 | 0.43 ppm | 1 ppm | 2 ppm | Below the health goal |
| Gross alpha (radioactivity)average · range ND to 6.3 · Groundwater wells · 2025 report, page 2 | Not detected | 0 pCi/L | 15 pCi/L | Not detected |
| Lead90th percentile of 31 homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Perchlorateaverage · range ND to 3.2 · Groundwater wells · 2025 report, page 2 | Not detected | 1 ppb | 6 ppb | Not detected |
| Turbidity (cloudiness)highest measured · Corona del Mar plant · 2025 report, page 2 | 0.13 NTU | None set | 1 NTU | Below the legal limit |
| Hardnessaverage · range 22.2 to 31.6 · Groundwater wells, highest of 2 sources · 2025 report, page 3 | 27.5 gpg (470 ppm) | — | — | Very hard |
| Lithiumaverage · range 23 to 38 · Groundwater wells, highest of 2 sources · 2025 report, page 2 | 28 ppb | None set | None | No health limit |
| Sodiumaverage · range 50 to 79 · Groundwater wells, highest of 2 sources · 2025 report, page 3 | 64 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Goleta Water District’s water between Dec 2024 and Sep 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium53.5 ppbFound in 22 of 22 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.
Salty taste / high TDS
Found: Sulfate, Total dissolved solids
What removes it: Reverse osmosis.
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