What was found in ZIP 98042
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 | 1000 µg/L 25% of the EPA limit 4000 µg/L Highest in the ZIP: Lake Meridian Water District · 24,231 people · 2014 | 2/4 | SYR4 |
| Nitrate | 900 µg/L 9% of the EPA limit 10000 µg/L Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2019 | 2/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 47.56 µg/L 79% of the EPA limit 60 µg/L Main supplier: SOOS CREEK WATER & SEWER DISTRICT · 74,172 people · 2019
Highest in the ZIP: 48.36 µg/L — CEDAR RIVER WATER & SEWER DISTRICT · 28,671 people · 2019 | 4/4 | SYR4 |
| TTHM | 46.8035 µg/L 59% of the EPA limit 80 µg/L Main supplier: SOOS CREEK WATER & SEWER DISTRICT · 74,172 people · 2019 | 4/4 | SYR4 |
| Chloroform | 44.29 µg/L No EPA limit set Main supplier: SOOS CREEK WATER & SEWER DISTRICT · 74,172 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 32.875 µg/L No EPA limit set Main supplier: SOOS CREEK WATER & SEWER DISTRICT · 74,172 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 20.045 µg/L No EPA limit set Main supplier: SOOS CREEK WATER & SEWER DISTRICT · 74,172 people · 2019
Highest in the ZIP: 23.84 µg/L — CEDAR RIVER WATER & SEWER DISTRICT · 28,671 people · 2019 | 4/4 | SYR4 |
| Lithium | 17.7 µg/L No EPA limit set Highest in the ZIP: Lake Meridian Water District · 24,231 people · 2025 | 1/4 | UCMR-5 |
| Lead | 7 µg/L 47% of the EPA limit 15 µg/L Highest in the ZIP: CEDAR RIVER WATER & SEWER DISTRICT · 28,671 people · 2013 | 1/4 | SYR4 |
| Bromodichloromethane | 2.453 µg/L No EPA limit set Main supplier: SOOS CREEK WATER & SEWER DISTRICT · 74,172 people · 2019
Highest in the ZIP: 6.99 µg/L — Lake Meridian Water District · 24,231 people · 2019 | 4/4 | SYR4 |
| Copper | 6 µg/L 0.5% of the EPA limit 1300 µg/L Highest in the ZIP: CEDAR RIVER WATER & SEWER DISTRICT · 28,671 people · 2013 | 1/4 | SYR4 |
| Arsenic | 5.8 µg/L 58% of the EPA limit 10 µg/L Highest in the ZIP: Lake Meridian Water District · 24,231 people · 2014 | 2/4 | SYR4 |
| Monochloroacetic Acid | 4.403 µg/L No EPA limit set Main supplier: SOOS CREEK WATER & SEWER DISTRICT · 74,172 people · 2019 | 2/4 | SYR4 |
| Barium | 2.95 µg/L 0.1% of the EPA limit 2000 µg/L Highest in the ZIP: CEDAR RIVER WATER & SEWER DISTRICT · 28,671 people · 2013 | 1/4 | SYR4 |
| Dibromochloromethane | 2.94 µg/L No EPA limit set Highest in the ZIP: Lake Meridian Water District · 24,231 people · 2019 | 3/4 | SYR4 |
| Monobromoacetic Acid | 1.1 µg/L No EPA limit set Highest in the ZIP: Lake Meridian Water District · 24,231 people · 2019 | 1/4 | SYR4 |
| Bromoform | 0.8000 µg/L No EPA limit set Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2019 | 2/4 | SYR4 |
| PFBS | 0.0140 µg/L No EPA limit set Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/4 | UCMR-5 |
| Pfba | 0.0122 µg/L No EPA limit set Highest in the ZIP: CEDAR RIVER WATER & SEWER DISTRICT · 28,671 people · 2024 | 1/4 | UCMR-5 |
| PFOS | 0.0086 µg/L No EPA limit set Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/4 | UCMR-5 |
| PFHXS | 0.0075 µg/L No EPA limit set Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/4 | UCMR-5 |
| Pfpea | 0.0039 µg/L No EPA limit set Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/4 | UCMR-5 |
| Pfhxa | 0.0033 µg/L No EPA limit set Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/4 | UCMR-5 |
| Lead | 0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L Highest in the ZIP: COVINGTON WATER DISTRICT · 56,172 people · 2025 | 3/4 | 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 98042
| Supplier | State | Population served |
|---|---|---|
| SOOS CREEK WATER & SEWER DISTRICT | WA | 74,172 |
| COVINGTON WATER DISTRICT | WA | 56,172 |
| CEDAR RIVER WATER & SEWER DISTRICT | WA | 28,671 |
| Lake Meridian Water District | WA | 24,231 |
Frequently asked questions about ZIP 98042 tap water
Is the tap water in ZIP 98042 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 98042. 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 98042?
4 public water suppliers report EPA drinking-water monitoring for ZIP 98042. Each is listed above with its population served.
What contaminants are in ZIP 98042's water?
EPA monitoring detected Fluoride, Nitrate, Total Haloacetic Acids (HAA5), TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.