What was found in ZIP 98051
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 | 4540 µg/L 45% of the EPA limit 10000 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 4268 µg/L 43% of the EPA limit 10000 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 1/2 | SYR4 |
| Fluoride | 880 µg/L 22% of the EPA limit 4000 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 1/2 | SYR4 |
| Copper | 151.9 µg/L 12% of the EPA limit 1300 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 31 µg/L 52% of the EPA limit 60 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019
Highest in the ZIP: 47.155 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2019 | 2/2 | SYR4 |
| Barium | 44 µg/L 2.2% of the EPA limit 2000 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 1/2 | SYR4 |
| TTHM | 33.847 µg/L 42% of the EPA limit 80 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019
Highest in the ZIP: 39.4 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2019 | 2/2 | SYR4 |
| Chloroform | 31 µg/L No EPA limit set Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019
Highest in the ZIP: 36.975 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 19 µg/L No EPA limit set Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019
Highest in the ZIP: 31.095 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 13 µg/L No EPA limit set Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019
Highest in the ZIP: 18.12 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2019 | 2/2 | SYR4 |
| Arsenic | 6.73 µg/L 67% of the EPA limit 10 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 3.2 µg/L No EPA limit set Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019
Highest in the ZIP: 3.4 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 3.19 pCi/L No EPA limit set Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2014 | 1/2 | SYR4 |
| Lead | 2.91 µg/L 19% of the EPA limit 15 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 2.38 µg/L No EPA limit set Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 2.18 µg/L No EPA limit set Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 2/2 | SYR4 |
| Chromium | 1.65 µg/L 1.7% of the EPA limit 100 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 1/2 | SYR4 |
| Trichloroethylene | 1.58 µg/L 32% of the EPA limit 5 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 1/2 | SYR4 |
| Bromoform | 1.2 µg/L No EPA limit set Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 2/2 | SYR4 |
| Mercury | 0.7000 µg/L 35% of the EPA limit 2 µg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2019 | 1/2 | SYR4 |
| PFBS | 0.0033 µg/L No EPA limit set Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2025
Highest in the ZIP: 0.0140 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2024 | 2/2 | UCMR-5 |
| PFOS | 0.0086 µg/L No EPA limit set Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/2 | UCMR-5 |
| PFHXS | 0.0051 µg/L No EPA limit set Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2025
Highest in the ZIP: 0.0075 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2024 | 2/2 | UCMR-5 |
| Pfpea | 0.0039 µg/L No EPA limit set Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/2 | UCMR-5 |
| Pfhxa | 0.0033 µg/L No EPA limit set Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: TACOMA WATER DIVISION CITY OF · 446,170 people · 2025
Highest in the ZIP: 0.0014 mg/L — COVINGTON WATER DISTRICT · 56,172 people · 2025 | 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 98051
| Supplier | State | Population served |
|---|---|---|
| TACOMA WATER DIVISION CITY OF | WA | 446,170 |
| COVINGTON WATER DISTRICT | WA | 56,172 |
Frequently asked questions about ZIP 98051 tap water
Is the tap water in ZIP 98051 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 98051. 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 98051?
2 public water suppliers report EPA drinking-water monitoring for ZIP 98051. Each is listed above with its population served.
What contaminants are in ZIP 98051's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.