What was found in Stanwood'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 | 3760 µg/L 38% of the EPA limit 10000 µg/L Highest in the city: NEW UTSALADY WATER SYSTEM INC · 291 people · 2019 | 4/12 | SYR4 |
| Nitrate-Nitrite | 3760 µg/L 38% of the EPA limit 10000 µg/L Highest in the city: NEW UTSALADY WATER SYSTEM INC · 291 people · 2019 | 4/12 | SYR4 |
| Fluoride | 430 µg/L 11% of the EPA limit 4000 µg/L Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2016
Highest in the city: 490 µg/L — PARKLANE WATER ASSOCIATION · 127 people · 2016 | 10/12 | SYR4 |
| Barium | 46 µg/L 2.3% of the EPA limit 2000 µg/L Highest in the city: NEW UTSALADY WATER SYSTEM INC · 291 people · 2019 | 6/12 | SYR4 |
| TTHM | 17.545 µg/L 22% of the EPA limit 80 µg/L Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2019
Highest in the city: 21.2 µg/L — PLEASANT VIEW WATER COMPANY · 57 people · 2016 | 3/12 | SYR4 |
| Lead | 16.9 µg/L 113% of the EPA limit, at the 95th percentile of samples — 15 µg/L Highest in the city: SEASCAPE WATER ASSOCIATION · 28 people · 2018 | 2/12 | SYR4 |
| Arsenic | 6.4 µg/L 64% of the EPA limit 10 µg/L Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2016
Highest in the city: 12 µg/L — SUNSET WATER DISTRIBUTION ASSOC · 159 people · 2012 | 11/12 | SYR4 |
| Chromium | 9.7 µg/L 9.7% of the EPA limit 100 µg/L Highest in the city: CAMANO LAGUNA VISTA WATER ASSOC · 310 people · 2019 | 5/12 | SYR4 |
| Bromodichloromethane | 4.59 µg/L No EPA limit set Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2019
Highest in the city: 7.4 µg/L — PLEASANT VIEW WATER COMPANY · 57 people · 2017 | 3/12 | SYR4 |
| Dibromochloromethane | 7.04 µg/L No EPA limit set Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2019
Highest in the city: 7.2 µg/L — PLEASANT VIEW WATER COMPANY · 57 people · 2017 | 3/12 | SYR4 |
| Copper | 6 µg/L 0.5% of the EPA limit 1300 µg/L Highest in the city: NEW UTSALADY WATER SYSTEM INC · 291 people · 2019 | 1/12 | SYR4 |
| Gross Beta Particle Activity | 4.24 pCi/L No EPA limit set Highest in the city: CAMANO LAGUNA VISTA WATER ASSOC · 310 people · 2016 | 3/12 | SYR4 |
| Chloroform | 2.9 µg/L No EPA limit set Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2019
Highest in the city: 4.1 µg/L — PLEASANT VIEW WATER COMPANY · 57 people · 2017 | 3/12 | SYR4 |
| Selenium | 4 µg/L 8% of the EPA limit 50 µg/L Highest in the city: PALISADES ASSN · 53 people · 2019 | 2/12 | SYR4 |
| Bromoform | 3.015 µg/L No EPA limit set Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2019
Highest in the city: 3.33 µg/L — CAMANO SHORES COMMUNITY · 79 people · 2017 | 3/12 | SYR4 |
| Total Haloacetic Acids (HAA5) | 2.555 µg/L 4.3% of the EPA limit 60 µg/L Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2019 | 2/12 | SYR4 |
| Dibromoacetic Acid | 1.695 µg/L No EPA limit set Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2019 | 2/12 | SYR4 |
| Dichloroacetic Acid | 1 µg/L No EPA limit set Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2019 | 1/12 | SYR4 |
| Lead | 0.00070 mg/L 4.7% of the EPA limit 0.0150 mg/L Main supplier: MADRONA BEACH COMM WATER SYSTEM · 539 people · 2023
Highest in the city: 0.0029 mg/L — NEW UTSALADY WATER SYSTEM INC · 291 people · 2025 | 12/12 | 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.
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 Stanwood
| Supplier | Population served |
|---|---|
| MADRONA BEACH COMM WATER SYSTEM | 539 |
| CAMANO LAGUNA VISTA WATER ASSOC | 310 |
| NEW UTSALADY WATER SYSTEM INC | 291 |
| CAMANO WEST WATER ASSOCIATION | 167 |
| SUNSET WATER DISTRIBUTION ASSOC | 159 |
| PARKLANE WATER ASSOCIATION | 127 |
| LIVINGSTON BAY COMMUNITY ASSN | 120 |
| CAMANO SHORES COMMUNITY | 79 |
| PLEASANT VIEW WATER COMPANY | 57 |
| PALISADES ASSN | 53 |
| OLYMPIC VIEW ESTATES | 33 |
| SEASCAPE WATER ASSOCIATION | 28 |
Frequently asked questions about Stanwood tap water
Is Stanwood tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Stanwood. 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 Stanwood?
12 public water suppliers report drinking-water monitoring for Stanwood, Washington to the EPA. Each is listed above with its population served.
What contaminants are in Stanwood's water?
The contaminants EPA monitoring detected in Stanwood include Nitrate, Nitrate-Nitrite, Fluoride, Barium, TTHM. 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.