We read 15 results from City of Concord’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 116,088 people · Water system ID NC0113010 · 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 |
|---|---|---|---|---|
| Gross alpha (radioactivity)highest measured · range 0.12 to 2.42 · Treated water · 2025 report, page 7 | 2.42 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Gross beta (radioactivity)highest measured · range 3.3 to 4.19 · Treated water · 2025 report, page 7 | 4.19 pCi/L | 0 pCi/L | 50 pCi/L | Above the health goalThe health goal is zero |
| Radium (combined 226 + 228)highest measured · range ND to 0.28 · Treated water · 2025 report, page 7 | 0.28 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Bariumhighest measured · range 0.03 to 0.03 · Treated water · 2025 report, page 8 | 0.03 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 7.3 to 8.1 · Treated water · 2025 report, page 12 | 8.1 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorinehighest running annual average · range 0.32 to 1.83 · Distribution system · 2025 report, page 7 | 1.06 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 51 homes tested, 0 over the action level · Customer taps · 2025 report, page 6 | 0.12 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 17 to 53 · Distribution system · 2025 report, page 6 | 47.7 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 13 to 89 · Distribution system · 2025 report, page 6 | 62.8 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.53 to 0.63 · Treated water · 2025 report, page 8 | 0.63 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of 51 homes tested, 0 over the action level · printed as ND ppm · Customer taps · 2025 report, page 6 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)highest measured · range 0.15 to 0.17 · Treated water · 2025 report, page 7 | 0.17 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfatehighest measured · range 22 to 24 · Treated water · 2025 report, page 12 | 24 ppm | — | 250 ppm guideline | Within the guideline |
| Turbidity (cloudiness)highest measured · Treatment plants · 2025 report, page 11 | 0.14 NTU | None set | 1 NTU | Below the legal limit |
| Sodiumhighest measured · range 14 to 18 · Treated water · 2025 report, page 12 | 18 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. 2 numbers we weren’t sure about are held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in City of Concord’s water between Oct 2024 and Jul 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFOS9.1 pptFound in 4 of 12 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFHxS5 pptFound in 4 of 12 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.
Radium and uranium
Found: Gross alpha (radioactivity), Gross beta (radioactivity), Radium (combined 226 + 228)
What removes it: Reverse osmosis.
PFAS ("forever chemicals")
Found: PFOS (EPA testing)
What removes it: Reverse osmosis.
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