What was found in Jacksonville's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 2032 µg/L 51% of the EPA limit 4000 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 2211 µg/L — JACKSONVILLE CITY OF · 49,093 people · 2017 | 5/9 | SYR4 |
| Nitrate | 1218.7 µg/L 12% of the EPA limit 10000 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 1/9 | SYR4 |
| Nitrate-Nitrite | 1165.28 µg/L 12% of the EPA limit 10000 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 1/9 | SYR4 |
| Copper | 611.7 µg/L 47% of the EPA limit 1300 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 1094 µg/L — LAURADALE S/D · 2,527 people · 2019 | 7/9 | SYR4 |
| Nitrite | 150.3 µg/L 15% of the EPA limit 1000 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 1/9 | SYR4 |
| Lead | 114.7 µg/L 765% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 7/9 | SYR4 |
| TTHM | 86.95 µg/L 109% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 95.25 µg/L — SOUTHGATE MHP · 94 people · 2019 | 8/9 | SYR4 |
| Chloroform | 69.725 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 8/9 | SYR4 |
| Bromoform | 5 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 67.202 µg/L — OSPREY COVE 2 · 475 people · 2018 | 7/9 | SYR4 |
| Total Haloacetic Acids (HAA5) | 40.15 µg/L 67% of the EPA limit 60 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 7/9 | SYR4 |
| Dibromochloromethane | 7.5 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 29.906 µg/L — SOUTHGATE MHP · 94 people · 2019 | 8/9 | SYR4 |
| Lithium | 29.5 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2023 | 2/9 | UCMR-5 |
| Chromium | 28.6 µg/L 29% of the EPA limit 100 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 3/9 | SYR4 |
| Bromodichloromethane | 17 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 21.143 µg/L — SOUTHGATE MHP · 94 people · 2019 | 8/9 | SYR4 |
| Dichloroacetic Acid | 20.6803 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 20.8 µg/L — SOUTHGATE MHP · 94 people · 2019 | 8/9 | SYR4 |
| Trichloroacetic Acid | 18.84 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 7/9 | SYR4 |
| Gross Beta Particle Activity | 9.325 pCi/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2016
Highest in the city: 18.17 pCi/L — JACKSONVILLE CITY OF · 49,093 people · 2019 | 5/9 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.495 pCi/L 23% of the EPA limit 15 pCi/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2016
Highest in the city: 10.6 pCi/L — OSPREY COVE 1 · 475 people · 2019 | 3/9 | SYR4 |
| Dibromoacetic Acid | 2 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 10.5 µg/L — OSPREY COVE 2 · 475 people · 2018 | 6/9 | SYR4 |
| Arsenic | 6 µg/L 60% of the EPA limit 10 µg/L Highest in the city: LAURADALE S/D · 2,527 people · 2019 | 1/9 | SYR4 |
| cis-1,2-Dichloroethylene | 4.52 µg/L 6.5% of the EPA limit 70 µg/L Highest in the city: OSPREY COVE 2 · 475 people · 2019 | 1/9 | SYR4 |
| Monochloroacetic Acid | 3 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 4.35 µg/L — JACKSONVILLE CITY OF · 49,093 people · 2019 | 3/9 | SYR4 |
| Combined Radium (-226 And -228) | 1.99 pCi/L 40% of the EPA limit 5 pCi/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 3.39 pCi/L — JACKSONVILLE CITY OF · 49,093 people · 2019 | 4/9 | SYR4 |
| Monobromoacetic Acid | 2 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the city: 2.85 µg/L — RAINTREE/SUMMERSILL ESTATES #2 · 1,539 people · 2019 | 6/9 | SYR4 |
| Combined Uranium | 1.49 µg/L 5% of the EPA limit 30 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 1/9 | SYR4 |
| Xylenes, Total | 1.08 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: LAURADALE S/D · 2,527 people · 2019 | 1/9 | SYR4 |
| Heptachlor | 0.0946 µg/L 24% of the EPA limit 0.4000 µg/L Highest in the city: LAURADALE S/D · 2,527 people · 2019 | 1/9 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2025
Highest in the city: 0.0040 mg/L — LAURADALE S/D · 2,527 people · 2025 | 9/9 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Jacksonville
| Supplier | Population served |
|---|---|
| ONSLOW WTR AND SEWER AUTHORITY | 156,755 |
| JACKSONVILLE CITY OF | 49,093 |
| LAURADALE S/D | 2,527 |
| RAINTREE/SUMMERSILL ESTATES #2 | 1,539 |
| OSPREY COVE 1 | 475 |
| OSPREY COVE 2 | 475 |
| CITY OF JACKSONVILLE - SPRINGFIELD APTS | 385 |
| SUMMERSILL ESTATES NO 1 | 163 |
| SOUTHGATE MHP | 94 |
Frequently asked questions about Jacksonville tap water
Is Jacksonville tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Jacksonville. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Jacksonville?
9 public water suppliers report drinking-water monitoring for Jacksonville, North Carolina to the EPA. Each is listed above with its population served.
What contaminants are in Jacksonville's water?
The contaminants EPA monitoring detected in Jacksonville include Fluoride, Nitrate, Nitrate-Nitrite, Copper, Nitrite. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.