We read 13 results from Gswc - Artesia’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 50,375 people · Water system ID CA1910004 · 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 9.9 · Sources · 2025 report, page 8 | 2 ppb | 0.004 ppb | 10 ppb | Above the health goal500x the health goal |
| Copper90th percentile of 30 homes tested, 0 over the action level · Customer taps · 2025 report, page 9 | 0.31 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1x the health goal |
| Chlorideaverage · range 13 to 52 · Sources · 2025 report, page 8 | 30 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorineaverage · range 0.1 to 2.2 · Distribution system · 2025 report, page 9 | 1.2 ppm | None set | 4 ppm | Below the legal limit |
| Disinfection byproducts (HAA5)average · range ND to 8.7 · Distribution system · 2025 report, page 9 | 5.2 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)average · range 1.4 to 26 · Distribution system · 2025 report, page 9 | 13 ppb | None set | 80 ppb | Below the legal limit |
| Lead90th percentile of 30 homes tested, 0 over the action level · Customer taps · 2025 report, page 9 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| PFOS (a PFAS)average · range ND to 16 · Sources · 2025 report, page 8 | Not detected | 1 ppt | 4 ppt from 2029 | Not detected |
| Sulfateaverage · range 39 to 94 · Sources · 2025 report, page 8 | 62 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidsaverage · range 260 to 400 · Sources · 2025 report, page 8 | 300 ppm | — | 500 ppm guideline | Within the guideline |
| Conductivityaverage · range 430 to 660 · Sources · 2025 report, page 8 | 540 µS/cm | None set | None | No health limit |
| Hardnessaverage · range 7.9 to 16.2 · Sources · 2025 report, page 8 | 11.2 gpg (191 ppm) | — | — | Very hard |
| Sodiumaverage · range 25 to 69 · Sources · 2025 report, page 8 | 39 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 Gswc - Artesia’s water between Jan 2023 and Dec 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFOS13 pptFound in 4 of 10 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFHxS3.4 pptFound in 2 of 10 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.
PFAS ("forever chemicals")
Found: PFOS (EPA testing)
What removes it: Reverse osmosis.
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