What was found in ZIP 65109
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 3150.5 µg/L 32% of the EPA limit 10000 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 1/3 | SYR4 |
| Nitrate-Nitrite | 2855.5 µg/L 29% of the EPA limit 10000 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 3/3 | SYR4 |
| Fluoride | 1030 µg/L 26% of the EPA limit 4000 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 3/3 | SYR4 |
| Copper | 93.75 µg/L 7.2% of the EPA limit 1300 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019
Highest in the ZIP: 200.1 µg/L — COLE COUNTY PWSD 2 · 13,107 people · 2018 | 3/3 | SYR4 |
| Barium | 14.1 µg/L 0.7% of the EPA limit 2000 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019
Highest in the ZIP: 186.9 µg/L — COLE COUNTY PWSD 2 · 13,107 people · 2018 | 3/3 | SYR4 |
| Lithium | 92.7 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2024 | 1/3 | UCMR-5 |
| TTHM | 75.095 µg/L 94% of the EPA limit 80 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 2/3 | SYR4 |
| Chloroform | 64.75 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 29.2 µg/L 49% of the EPA limit 60 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 25.39 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 10.54 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 2/3 | SYR4 |
| Lead | 5.3 µg/L 35% of the EPA limit 15 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019
Highest in the ZIP: 10.192 µg/L — COLE COUNTY PWSD 2 · 13,107 people · 2018 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.925 pCi/L 53% of the EPA limit 15 pCi/L Highest in the ZIP: COLE COUNTY PWSD 2 · 13,107 people · 2015 | 1/3 | SYR4 |
| Chromium | 5.985 µg/L 6% of the EPA limit 100 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 5.17 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 4.8 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 3.715 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 3.2 pCi/L 64% of the EPA limit 5 pCi/L Highest in the ZIP: COLE COUNTY PWSD 1 · 16,548 people · 2019 | 2/3 | SYR4 |
| Xylenes, Total | 3.12 µg/L 0% of the EPA limit 10000 µg/L Highest in the ZIP: COLE COUNTY PWSD 2 · 13,107 people · 2018 | 1/3 | SYR4 |
| Dibromoacetic Acid | 3 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 1/3 | SYR4 |
| Selenium | 3 µg/L 6% of the EPA limit 50 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 1/3 | SYR4 |
| Trichloroacetic Acid | 2.74 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 1/3 | SYR4 |
| Arsenic | 1.03 µg/L 10% of the EPA limit 10 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019
Highest in the ZIP: 2.615 µg/L — COLE COUNTY PWSD 1 · 16,548 people · 2018 | 2/3 | SYR4 |
| Bromoform | 1.87 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 2/3 | SYR4 |
| 2,4-D | 0.7650 µg/L 1.1% of the EPA limit 70 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 1/3 | SYR4 |
| Atrazine | 0.7180 µg/L 24% of the EPA limit 3 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 1/3 | SYR4 |
| Antimony, Total | 0.5700 µg/L 9.5% of the EPA limit 6 µg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2025
Highest in the ZIP: 0.0086 mg/L — COLE COUNTY PWSD 2 · 13,107 people · 2024 | 3/3 | LCR |
| Pfba | 0.0072 µg/L No EPA limit set Main supplier: MO AMERICAN JEFFERSON CITY DISTRICT · 30,075 people · 2024 | 1/3 | UCMR-5 |
| PFOA | 0.0058 µg/L No EPA limit set Highest in the ZIP: COLE COUNTY PWSD 1 · 16,548 people · 2024 | 1/3 | UCMR-5 |
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.
Water suppliers serving ZIP 65109
| Supplier | State | Population served |
|---|---|---|
| MO AMERICAN JEFFERSON CITY DISTRICT | MO | 30,075 |
| COLE COUNTY PWSD 1 | MO | 16,548 |
| COLE COUNTY PWSD 2 | MO | 13,107 |
Frequently asked questions about ZIP 65109 tap water
Is the tap water in ZIP 65109 safe to drink?
EPA testing detected 30 contaminants across the water suppliers serving ZIP 65109. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 65109?
3 public water suppliers report EPA drinking-water monitoring for ZIP 65109. Each is listed above with its population served.
What contaminants are in ZIP 65109's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.