We read 18 results from Camp Pendleton (South)’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 42,219 people · Water system ID CA3710702 · 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 1.8 · Southern system · 2025 report, page 5 | 0.28 ppb | 0.02 ppb | 10 ppb | Above the health goal14x the health goal |
| Gross alpha (radioactivity)average · range ND to 3.58 · Southern system · 2025 report, page 5 | 0.9 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Bariumaverage · range 0.03 to 0.04 · Southern system · 2025 report, page 5 | 0.03 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorideaverage · range 48 to 69 · Southern system · 2025 report, page 6 | 60 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorineaverage · range 1.37 to 1.68 · Southern system · 2025 report, page 5 | 1.56 ppm | None set | 4 ppm | Below the legal limit |
| Chromium (total)average · range ND to 3.2 · Southern system · 2025 report, page 5 | 0.8 ppb | None set | 100 ppb | Below the legal limit |
| Copper90th percentile of 30 homes tested, 0 over the action level · Southern system taps · 2025 report, page 6 | 0.28 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)average · range ND to 8.9 · Southern system · 2025 report, page 5 | 3.56 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)average · range 9.1 to 75 · Southern system · 2025 report, page 5 | 36.8 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · range 0.1 to 0.14 · Southern system · 2025 report, page 5 | 0.12 ppm | 1 ppm | 2 ppm | Below the health goal |
| Lead90th percentile of 30 homes tested, 0 over the action level · Southern system taps · 2025 report, page 6 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)average · range 0.09 to 0.13 · Southern system · 2025 report, page 5 | 0.11 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfateaverage · range 53 to 76 · Southern system · 2025 report, page 6 | 67 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidsaverage · range 230 to 320 · Southern system · 2025 report, page 6 | 283 ppm | — | 500 ppm guideline | Within the guideline |
| Hardnessaverage · range 5.32 to 7.6 · Southern system · 2025 report, page 7 | 6.73 gpg (115 ppm) | — | — | Moderately hard |
| Lithiumaverage · range ND to 36.9 · Southern system · 2025 report, page 7 | 9.2 ppb | None set | None | No health limit |
| PFBA (a PFAS)average · range ND to 3.2 · Southern system · 2025 report, page 7 | 1.91 ppt | None set | None | No health limit |
| Sodiumaverage · range 48 to 58 · Southern system · 2025 report, page 7 | 55 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 Camp Pendleton (South)’s water between Feb 2024 and Aug 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFHxS5.4 pptFound in 1 of 4 samples · highest resultNo federal limit in force for this one
- PFBS3.2 pptFound in 1 of 4 samples · highest resultNo federal limit in force for this one
- Lithium36.9 ppbFound in 1 of 4 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)
What removes it: Reverse osmosis.
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