What was found in ZIP 71603
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 |
|---|---|---|---|
| Fluoride | 1321 µg/L 33% of the EPA limit 4000 µg/L Main supplier: LIBERTY UTILITIES · 43,438 people · 2019 | 4/5 | SYR4 |
| Copper | 623.45 µg/L 48% of the EPA limit 1300 µg/L Main supplier: LIBERTY UTILITIES · 43,438 people · 2019
Highest in the ZIP: 658.45 µg/L — WATSON CHAPEL WATER ASSOC · 5,590 people · 2019 | 5/5 | SYR4 |
| Nitrate-Nitrite | 497 µg/L 5% of the EPA limit 10000 µg/L Highest in the ZIP: HWY 63 WATER ASSOCIATION · 7,187 people · 2019 | 2/5 | SYR4 |
| Nitrate | 490 µg/L 4.9% of the EPA limit 10000 µg/L Highest in the ZIP: HWY 63 WATER ASSOCIATION · 7,187 people · 2019 | 1/5 | SYR4 |
| Cyanide | 40 µg/L 20% of the EPA limit 200 µg/L Main supplier: LIBERTY UTILITIES · 43,438 people · 2018 | 1/5 | SYR4 |
| Lithium | 28.7 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES · 43,438 people · 2025 | 5/5 | UCMR-5 |
| Di(2-ethylhexyl) Phthalate | 12.658 µg/L 211% of the EPA limit, at the 95th percentile of samples — 6 µg/L Highest in the ZIP: YORKTOWN WATER ASSOCIATION · 7,364 people · 2019 | 1/5 | SYR4 |
| Lead | 3.92 µg/L 26% of the EPA limit 15 µg/L Main supplier: LIBERTY UTILITIES · 43,438 people · 2019
Highest in the ZIP: 11.5 µg/L — YORKTOWN WATER ASSOCIATION · 7,364 people · 2019 | 5/5 | SYR4 |
| Gross Beta Particle Activity | 7.365 pCi/L No EPA limit set Main supplier: LIBERTY UTILITIES · 43,438 people · 2019 | 5/5 | SYR4 |
| TTHM | 4.5 µg/L 5.6% of the EPA limit 80 µg/L Main supplier: LIBERTY UTILITIES · 43,438 people · 2019
Highest in the ZIP: 6.88 µg/L — CENTER GROVE WATER ASSOCIATION · 3,858 people · 2019 | 5/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3.6 µg/L 6% of the EPA limit 60 µg/L Main supplier: LIBERTY UTILITIES · 43,438 people · 2019
Highest in the ZIP: 6.45 µg/L — HWY 63 WATER ASSOCIATION · 7,187 people · 2019 | 5/5 | SYR4 |
| Chloroform | 3.254 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES · 43,438 people · 2019 | 5/5 | SYR4 |
| Monobromoacetic Acid | 2.62 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES · 43,438 people · 2019 | 2/5 | SYR4 |
| Monochloroacetic Acid | 2.3 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES · 43,438 people · 2019 | 2/5 | SYR4 |
| Bromodichloromethane | 1.687 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES · 43,438 people · 2019
Highest in the ZIP: 2.14 µg/L — CENTER GROVE WATER ASSOCIATION · 3,858 people · 2019 | 5/5 | SYR4 |
| Dibromochloromethane | 0.9765 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES · 43,438 people · 2019
Highest in the ZIP: 2.13 µg/L — CENTER GROVE WATER ASSOCIATION · 3,858 people · 2019 | 5/5 | SYR4 |
| Dichloroacetic Acid | 1.4 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES · 43,438 people · 2019
Highest in the ZIP: 2.1 µg/L — YORKTOWN WATER ASSOCIATION · 7,364 people · 2019 | 4/5 | SYR4 |
| Bromoform | 1.3 µg/L No EPA limit set Highest in the ZIP: CENTER GROVE WATER ASSOCIATION · 3,858 people · 2019 | 1/5 | SYR4 |
| Dibromoacetic Acid | 1.2 µg/L No EPA limit set Highest in the ZIP: CENTER GROVE WATER ASSOCIATION · 3,858 people · 2019 | 1/5 | SYR4 |
| Trichloroacetic Acid | 1.2 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES · 43,438 people · 2019 | 5/5 | SYR4 |
| Xylenes, Total | 0.6000 µg/L 0% of the EPA limit 10000 µg/L Highest in the ZIP: HWY 63 WATER ASSOCIATION · 7,187 people · 2019 | 1/5 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: LIBERTY UTILITIES · 43,438 people · 2025
Highest in the ZIP: 0.0020 mg/L — YORKTOWN WATER ASSOCIATION · 7,364 people · 2025 | 5/5 | 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.
Water suppliers serving ZIP 71603
| Supplier | State | Population served |
|---|---|---|
| LIBERTY UTILITIES | AR | 43,438 |
| YORKTOWN WATER ASSOCIATION | AR | 7,364 |
| HWY 63 WATER ASSOCIATION | AR | 7,187 |
| WATSON CHAPEL WATER ASSOC | AR | 5,590 |
| CENTER GROVE WATER ASSOCIATION | AR | 3,858 |
Frequently asked questions about ZIP 71603 tap water
Is the tap water in ZIP 71603 safe to drink?
EPA testing detected 22 contaminants across the water suppliers serving ZIP 71603. 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 71603?
5 public water suppliers report EPA drinking-water monitoring for ZIP 71603. Each is listed above with its population served.
What contaminants are in ZIP 71603's water?
EPA monitoring detected Fluoride, Copper, Nitrate-Nitrite, Nitrate, Cyanide, and others across this ZIP's suppliers. The full list with levels and sources is above.