What was found in ZIP 99223
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 | 3327.5 µg/L 33% of the EPA limit 10000 µg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 6830 µg/L — SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 2553 µg/L 26% of the EPA limit 10000 µg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 3037 µg/L — SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 2/3 | SYR4 |
| Fluoride | 400 µg/L 10% of the EPA limit 4000 µg/L Highest in the ZIP: VALLEY VIEW ESTATES · 230 people · 2012 | 2/3 | SYR4 |
| Copper | 8.4955 µg/L 0.7% of the EPA limit 1300 µg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 290 µg/L — VALLEY VIEW ESTATES · 230 people · 2018 | 2/3 | SYR4 |
| Barium | 48.43 µg/L 2.4% of the EPA limit 2000 µg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 130 µg/L — SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 3/3 | SYR4 |
| Lithium | 12 µg/L No EPA limit set Highest in the ZIP: SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2023 | 1/3 | UCMR-5 |
| TTHM | 4.816 µg/L 6% of the EPA limit 80 µg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 10.059 µg/L — SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 3/3 | SYR4 |
| Arsenic | 4.782 µg/L 48% of the EPA limit 10 µg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 7.455 µg/L — SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 7.2345 µg/L 12% of the EPA limit 60 µg/L Highest in the ZIP: SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2018 | 2/3 | SYR4 |
| Dichloroacetic Acid | 5.9725 µg/L No EPA limit set Highest in the ZIP: SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 1/3 | SYR4 |
| Chloroform | 0.8945 µg/L No EPA limit set Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 4.668 µg/L — SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 2/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.1 pCi/L 27% of the EPA limit 15 pCi/L Highest in the ZIP: VALLEY VIEW ESTATES · 230 people · 2015 | 1/3 | SYR4 |
| Lead | 2.6695 µg/L 18% of the EPA limit 15 µg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 4.06 µg/L — VALLEY VIEW ESTATES · 230 people · 2018 | 2/3 | SYR4 |
| Dibromochloromethane | 1.922 µg/L No EPA limit set Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 3.052 µg/L — SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 1.376 µg/L No EPA limit set Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 2.462 µg/L — SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 2/3 | SYR4 |
| Chromium | 1.3085 µg/L 1.3% of the EPA limit 100 µg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 1.7 µg/L — VALLEY VIEW ESTATES · 230 people · 2013 | 2/3 | SYR4 |
| Selenium | 1.15 µg/L 2.3% of the EPA limit 50 µg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2019
Highest in the ZIP: 1.7 µg/L — VALLEY VIEW ESTATES · 230 people · 2013 | 2/3 | SYR4 |
| Bromoform | 1.6475 µg/L No EPA limit set Main supplier: SPOKANE CITY OF · 346,138 people · 2019 | 2/3 | SYR4 |
| Dibromoacetic Acid | 1.346 µg/L No EPA limit set Highest in the ZIP: SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 1/3 | SYR4 |
| Trichloroacetic Acid | 1.32 µg/L No EPA limit set Highest in the ZIP: SPO CO WATER DIST 3 SYS 1 · 19,035 people · 2019 | 1/3 | SYR4 |
| Mercury | 0.2190 µg/L 11% of the EPA limit 2 µg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: SPOKANE CITY OF · 346,138 people · 2024
Highest in the ZIP: 0.0070 mg/L — VALLEY VIEW ESTATES · 230 people · 2024 | 3/3 | LCR |
| PFOS | 0.0061 µg/L No EPA limit set Main supplier: SPOKANE CITY OF · 346,138 people · 2025 | 1/3 | UCMR-5 |
| PFBS | 0.0039 µg/L No EPA limit set Main supplier: SPOKANE CITY OF · 346,138 people · 2025 | 1/3 | UCMR-5 |
| Pfhxa | 0.0035 µg/L No EPA limit set Main supplier: SPOKANE CITY OF · 346,138 people · 2025 | 1/3 | UCMR-5 |
| Pfpea | 0.0033 µg/L No EPA limit set Main supplier: SPOKANE CITY OF · 346,138 people · 2025 | 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 99223
| Supplier | State | Population served |
|---|---|---|
| SPOKANE CITY OF | WA | 346,138 |
| SPO CO WATER DIST 3 SYS 1 | WA | 19,035 |
| VALLEY VIEW ESTATES | SD | 230 |
Frequently asked questions about ZIP 99223 tap water
Is the tap water in ZIP 99223 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 99223. 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 99223?
3 public water suppliers report EPA drinking-water monitoring for ZIP 99223. Each is listed above with its population served.
What contaminants are in ZIP 99223'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.