What was found in Carlsborg'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 | 1364.5 µg/L 14% of the EPA limit 10000 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019
Highest in the city: 7334 µg/L — CARLSBORG LUD 10 12 13 14 · 1,349 people · 2019 | 6/6 | SYR4 |
| Nitrate-Nitrite | 1058 µg/L 11% of the EPA limit 10000 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019
Highest in the city: 5130 µg/L — CARLSBORG LUD 10 12 13 14 · 1,349 people · 2014 | 5/6 | SYR4 |
| Fluoride | 130 µg/L 3.3% of the EPA limit 4000 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 2/6 | SYR4 |
| TTHM | 73.2 µg/L 92% of the EPA limit 80 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 6/6 | SYR4 |
| Chloroform | 69.25 µg/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 6/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 52.85 µg/L 88% of the EPA limit 60 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 6/6 | SYR4 |
| Copper | 6 µg/L 0.5% of the EPA limit 1300 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019
Highest in the city: 37 µg/L — CARLSBORG LUD 10 12 13 14 · 1,349 people · 2014 | 4/6 | SYR4 |
| Trichloroacetic Acid | 30.035 µg/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 5/6 | SYR4 |
| Dichloroacetic Acid | 24.14 µg/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 6/6 | SYR4 |
| Barium | 9 µg/L 0.5% of the EPA limit 2000 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019
Highest in the city: 16 µg/L — CARLSBORG LUD 10 12 13 14 · 1,349 people · 2014 | 4/6 | SYR4 |
| Bromodichloromethane | 5.21 µg/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019
Highest in the city: 10.1 µg/L — ISLAND VIEW LUD 9 · 70 people · 2019 | 6/6 | SYR4 |
| Toluene | 7.4 µg/L 0.7% of the EPA limit 1000 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 1/6 | SYR4 |
| Dibromochloromethane | 3.93 µg/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019
Highest in the city: 6.26 µg/L — EVERGREEN CLALLAM COUNTY PUD 1 · 1,694 people · 2019 | 6/6 | SYR4 |
| Bromoform | 1.3 µg/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019
Highest in the city: 4 µg/L — EVERGREEN CLALLAM COUNTY PUD 1 · 1,694 people · 2019 | 5/6 | SYR4 |
| Dibromoacetic Acid | 1.74 µg/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019
Highest in the city: 3.82 µg/L — EVERGREEN CLALLAM COUNTY PUD 1 · 1,694 people · 2019 | 6/6 | SYR4 |
| Xylenes, Total | 3.375 µg/L 0% of the EPA limit 10000 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 1/6 | SYR4 |
| Chromium | 1.95 µg/L 2% of the EPA limit 100 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019
Highest in the city: 3 µg/L — EVERGREEN CLALLAM COUNTY PUD 1 · 1,694 people · 2017 | 3/6 | SYR4 |
| Monobromoacetic Acid | 1.965 µg/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019
Highest in the city: 2.8 µg/L — CARLSBORG LUD 10 12 13 14 · 1,349 people · 2019 | 2/6 | SYR4 |
| Monochloroacetic Acid | 2.8 µg/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 1/6 | SYR4 |
| Arsenic | 1.95 µg/L 20% of the EPA limit 10 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 2/6 | SYR4 |
| Gross Beta Particle Activity | 1.7 pCi/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2018 | 1/6 | SYR4 |
| Ethylbenzene | 1.265 µg/L 0.2% of the EPA limit 700 µg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2019 | 1/6 | SYR4 |
| Lead | 1 µg/L 6.7% of the EPA limit 15 µg/L Highest in the city: CARLSBORG LUD 10 12 13 14 · 1,349 people · 2014 | 1/6 | SYR4 |
| Asbestos | 0.3700 MFL 5.3% of the EPA limit 7 MFL Highest in the city: CLALLAM BAY SEKIU · 1,719 people · 2018 | 1/6 | SYR4 |
| Pfba | 0.0050 µg/L No EPA limit set Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2025 | 1/6 | UCMR-5 |
| Lead | 0.0016 mg/L 11% of the EPA limit 0.0150 mg/L Main supplier: PORT ANGELES COMPOSITE · 8,872 people · 2023
Highest in the city: 0.0024 mg/L — CARLSBORG LUD 10 12 13 14 · 1,349 people · 2023 | 6/6 | 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 Carlsborg
| Supplier | Population served |
|---|---|
| PORT ANGELES COMPOSITE | 8,872 |
| CLALLAM BAY SEKIU | 1,719 |
| EVERGREEN CLALLAM COUNTY PUD 1 | 1,694 |
| CARLSBORG LUD 10 12 13 14 | 1,349 |
| ISLAND VIEW LUD 9 | 70 |
| PANORAMIC HEIGHTS | 40 |
Frequently asked questions about Carlsborg tap water
Is Carlsborg tap water safe to drink?
EPA testing detected 26 contaminants in the water serving Carlsborg. 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 Carlsborg?
6 public water suppliers report drinking-water monitoring for Carlsborg, Washington to the EPA. Each is listed above with its population served.
What contaminants are in Carlsborg's water?
The contaminants EPA monitoring detected in Carlsborg include Nitrate, Nitrate-Nitrite, Fluoride, TTHM, Chloroform. 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.