What was found in Kent's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 1400 µg/L 14% of the EPA limit 10000 µg/L Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 3700 µg/L — MOUNTAIN VIEW WATER DISTRICT INC · 91 people · 2019 | 7/11 | SYR4 |
| Nitrate-Nitrite | 1400 µg/L 14% of the EPA limit 10000 µg/L Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 3525 µg/L — MOUNTAIN VIEW WATER DISTRICT INC · 91 people · 2019 | 4/11 | SYR4 |
| Fluoride | 880 µg/L 22% of the EPA limit 4000 µg/L Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 1000 µg/L — Lake Meridian Water District · 24,231 people · 2014 | 3/11 | SYR4 |
| Nitrite | 150 µg/L 15% of the EPA limit 1000 µg/L Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019 | 1/11 | SYR4 |
| Total Haloacetic Acids (HAA5) | 29.7325 µg/L 50% of the EPA limit 60 µg/L Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 47.155 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2019 | 6/11 | SYR4 |
| TTHM | 28.635 µg/L 36% of the EPA limit 80 µg/L Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 43.495 µg/L — HIGHLINE WATER DISTRICT · 100,170 people · 2019 | 7/11 | SYR4 |
| Chloroform | 24.365 µg/L No EPA limit set Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 39.46 µg/L — HIGHLINE WATER DISTRICT · 100,170 people · 2019 | 7/11 | SYR4 |
| Trichloroacetic Acid | 17.92 µg/L No EPA limit set Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 31.095 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2019 | 6/11 | SYR4 |
| Dichloroacetic Acid | 12.05 µg/L No EPA limit set Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 18.12 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2019 | 6/11 | SYR4 |
| Lithium | 17.7 µg/L No EPA limit set Highest in the city: Lake Meridian Water District · 24,231 people · 2025 | 1/11 | UCMR-5 |
| Barium | 10 µg/L 0.5% of the EPA limit 2000 µg/L Highest in the city: HIGHLINE WATER DISTRICT · 100,170 people · 2015 | 1/11 | SYR4 |
| Arsenic | 2.26 µg/L 23% of the EPA limit 10 µg/L Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 7 µg/L — LAKE MERIDIAN ESTATES (MHP) · 154 people · 2012 | 8/11 | SYR4 |
| Bromodichloromethane | 4.363 µg/L No EPA limit set Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 6.99 µg/L — Lake Meridian Water District · 24,231 people · 2019 | 7/11 | SYR4 |
| Dibromochloromethane | 2.3275 µg/L No EPA limit set Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019
Highest in the city: 3.18 µg/L — KING COUNTY WATER DISTRICT #54 · 5,373 people · 2019 | 6/11 | SYR4 |
| Monochloroacetic Acid | 3.1485 µg/L No EPA limit set Highest in the city: HIGHLINE WATER DISTRICT · 100,170 people · 2019 | 1/11 | SYR4 |
| Monobromoacetic Acid | 2.161 µg/L No EPA limit set Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019 | 2/11 | SYR4 |
| Dibromoacetic Acid | 1.7965 µg/L No EPA limit set Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019 | 2/11 | SYR4 |
| Lead | 1.3 µg/L 8.7% of the EPA limit 15 µg/L Highest in the city: KING COUNTY WATER DISTRICT #54 · 5,373 people · 2019 | 1/11 | SYR4 |
| Bromoform | 0.9040 µg/L No EPA limit set Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2019 | 4/11 | SYR4 |
| Combined Radium (-226 And -228) | 0.5000 pCi/L 10% of the EPA limit 5 pCi/L Highest in the city: STONE CREEK ESTATES WATER ASSN. · 62 people · 2012 | 1/11 | SYR4 |
| PFBS | 0.0034 µg/L No EPA limit set Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2025
Highest in the city: 0.0140 µg/L — COVINGTON WATER DISTRICT · 56,172 people · 2024 | 2/11 | UCMR-5 |
| PFOS | 0.0086 µg/L No EPA limit set Highest in the city: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/11 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: KENT WATER DEPARTMENT · 166,421 people · 2024
Highest in the city: 0.0085 mg/L — CRESTVIEW WEST WATER SYSTEM · 147 people · 2024 | 11/11 | LCR |
| PFHXS | 0.0075 µg/L No EPA limit set Highest in the city: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/11 | UCMR-5 |
| Pfpea | 0.0039 µg/L No EPA limit set Highest in the city: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/11 | UCMR-5 |
| Pfhxa | 0.0033 µg/L No EPA limit set Highest in the city: COVINGTON WATER DISTRICT · 56,172 people · 2024 | 1/11 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Kent
| Supplier | Population served |
|---|---|
| KENT WATER DEPARTMENT | 166,421 |
| HIGHLINE WATER DISTRICT | 100,170 |
| COVINGTON WATER DISTRICT | 56,172 |
| Lake Meridian Water District | 24,231 |
| KING COUNTY WATER DISTRICT #54 | 5,373 |
| SUGARLOAF WATER SYSTEM | 468 |
| LOCLOMAN SUBDIVISION | 174 |
| LAKE MERIDIAN ESTATES (MHP) | 154 |
| CRESTVIEW WEST WATER SYSTEM | 147 |
| MOUNTAIN VIEW WATER DISTRICT INC | 91 |
| STONE CREEK ESTATES WATER ASSN. | 62 |
Frequently asked questions about Kent tap water
Is Kent tap water safe to drink?
EPA testing detected 26 contaminants in the water serving Kent. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Kent?
11 public water suppliers report drinking-water monitoring for Kent, Washington to the EPA. Each is listed above with its population served.
What contaminants are in Kent's water?
The contaminants EPA monitoring detected in Kent include Nitrate, Nitrate-Nitrite, Fluoride, Nitrite, Total Haloacetic Acids (HAA5). The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.