What was found in ZIP 20181
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 | 755.2 µg/L 19% of the EPA limit 4000 µg/L Highest in the ZIP: MANASSAS, CITY OF · 42,696 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 621 µg/L 6.2% of the EPA limit 10000 µg/L Highest in the ZIP: MANASSAS, CITY OF · 42,696 people · 2019 | 1/2 | SYR4 |
| Copper | 456.25 µg/L 35% of the EPA limit 1300 µg/L Main supplier: PWCSA - WEST · 136,409 people · 2017 | 2/2 | SYR4 |
| TTHM | 45.72 µg/L 57% of the EPA limit 80 µg/L Main supplier: PWCSA - WEST · 136,409 people · 2019
Highest in the ZIP: 50.5 µg/L — MANASSAS, CITY OF · 42,696 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 42.855 µg/L 71% of the EPA limit 60 µg/L Main supplier: PWCSA - WEST · 136,409 people · 2019 | 2/2 | SYR4 |
| Chloroform | 37.48 µg/L No EPA limit set Main supplier: PWCSA - WEST · 136,409 people · 2019
Highest in the ZIP: 41.275 µg/L — MANASSAS, CITY OF · 42,696 people · 2019 | 2/2 | SYR4 |
| Barium | 21.62 µg/L 1.1% of the EPA limit 2000 µg/L Highest in the ZIP: MANASSAS, CITY OF · 42,696 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 20.8 µg/L No EPA limit set Main supplier: PWCSA - WEST · 136,409 people · 2019
Highest in the ZIP: 21.485 µg/L — MANASSAS, CITY OF · 42,696 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 18.435 µg/L No EPA limit set Main supplier: PWCSA - WEST · 136,409 people · 2019 | 2/2 | SYR4 |
| Lead | 17.317 µg/L 115% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: PWCSA - WEST · 136,409 people · 2017 | 2/2 | SYR4 |
| Monochloroacetic Acid | 3.42 µg/L No EPA limit set Main supplier: PWCSA - WEST · 136,409 people · 2019
Highest in the ZIP: 10.645 µg/L — MANASSAS, CITY OF · 42,696 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 8.92 µg/L No EPA limit set Main supplier: PWCSA - WEST · 136,409 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 7.278 µg/L No EPA limit set Highest in the ZIP: MANASSAS, CITY OF · 42,696 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 5.34 µg/L No EPA limit set Main supplier: PWCSA - WEST · 136,409 people · 2019 | 2/2 | SYR4 |
| Cadmium | 2.4 µg/L 48% of the EPA limit 5 µg/L Highest in the ZIP: MANASSAS, CITY OF · 42,696 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 2.139 µg/L No EPA limit set Main supplier: PWCSA - WEST · 136,409 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 2 pCi/L No EPA limit set Highest in the ZIP: MANASSAS, CITY OF · 42,696 people · 2013 | 1/2 | SYR4 |
| Bromoform | 1.73 µg/L No EPA limit set Main supplier: PWCSA - WEST · 136,409 people · 2019 | 1/2 | SYR4 |
| Dalapon | 1 µg/L 0.5% of the EPA limit 200 µg/L Highest in the ZIP: MANASSAS, CITY OF · 42,696 people · 2019 | 1/2 | SYR4 |
| Atrazine | 0.1900 µg/L 6.3% of the EPA limit 3 µg/L Highest in the ZIP: MANASSAS, CITY OF · 42,696 people · 2019 | 1/2 | SYR4 |
| Simazine | 0.1000 µg/L 2.5% of the EPA limit 4 µg/L Highest in the ZIP: MANASSAS, CITY OF · 42,696 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0233 µg/L No EPA limit set Highest in the ZIP: MANASSAS, CITY OF · 42,696 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0050 µg/L No EPA limit set Main supplier: PWCSA - WEST · 136,409 people · 2024 | 2/2 | UCMR-5 |
| Pfhxa | 0.0036 µg/L No EPA limit set Main supplier: PWCSA - WEST · 136,409 people · 2024
Highest in the ZIP: 0.0038 µg/L — MANASSAS, CITY OF · 42,696 people · 2024 | 2/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: PWCSA - WEST · 136,409 people · 2023
Highest in the ZIP: 0.00047 mg/L — MANASSAS, CITY OF · 42,696 people · 2024 | 2/2 | 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 20181
| Supplier | State | Population served |
|---|---|---|
| PWCSA - WEST | VA | 136,409 |
| MANASSAS, CITY OF | VA | 42,696 |
Frequently asked questions about ZIP 20181 tap water
Is the tap water in ZIP 20181 safe to drink?
EPA testing detected 25 contaminants across the water suppliers serving ZIP 20181. 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 20181?
2 public water suppliers report EPA drinking-water monitoring for ZIP 20181. Each is listed above with its population served.
What contaminants are in ZIP 20181's water?
EPA monitoring detected Fluoride, Nitrate-Nitrite, Copper, TTHM, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.