What was found in Gig Harbor'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 | 1300 µg/L 13% of the EPA limit 10000 µg/L Main supplier: GIG HARBOR WATER DEPT · 16,510 people · 2019
Highest in the city: 6400 µg/L — FOREST BEACH WATER SYSTEM · 204 people · 2019 | 19/30 | SYR4 |
| Nitrate-Nitrite | 1100 µg/L 11% of the EPA limit 10000 µg/L Main supplier: GIG HARBOR WATER DEPT · 16,510 people · 2019
Highest in the city: 4664 µg/L — WEATHERSWOOD VISTA WATER DISTRICT · 210 people · 2018 | 9/30 | SYR4 |
| TTHM | 1.3645 µg/L 1.7% of the EPA limit 80 µg/L Main supplier: GIG HARBOR WATER DEPT · 16,510 people · 2019
Highest in the city: 24.67 µg/L — MOORELAND WATER CORP · 68 people · 2017 | 12/30 | SYR4 |
| Copper | 21 µg/L 1.6% of the EPA limit 1300 µg/L Highest in the city: FOREST BEACH WATER SYSTEM · 204 people · 2019 | 3/30 | SYR4 |
| Bromoform | 19.32 µg/L No EPA limit set Highest in the city: MOORELAND WATER CORP · 68 people · 2017 | 4/30 | SYR4 |
| Chloroform | 1.172 µg/L No EPA limit set Main supplier: GIG HARBOR WATER DEPT · 16,510 people · 2019
Highest in the city: 10.61 µg/L — FOREST PARK WATER SYSTEM · 120 people · 2019 | 10/30 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.04 µg/L 1.7% of the EPA limit 60 µg/L Main supplier: GIG HARBOR WATER DEPT · 16,510 people · 2019
Highest in the city: 8.2 µg/L — FOREST PARK WATER SYSTEM · 120 people · 2017 | 10/30 | SYR4 |
| Chromium | 7.3 µg/L 7.3% of the EPA limit 100 µg/L Highest in the city: WEATHERSWOOD VISTA WATER DISTRICT · 210 people · 2018 | 2/30 | SYR4 |
| Barium | 6.95 µg/L 0.3% of the EPA limit 2000 µg/L Highest in the city: CANTERWOOD WATER SYSTEM · 1,805 people · 2016 | 3/30 | SYR4 |
| Dichloroacetic Acid | 1.04 µg/L No EPA limit set Main supplier: GIG HARBOR WATER DEPT · 16,510 people · 2019
Highest in the city: 5.4 µg/L — FOREST PARK WATER SYSTEM · 120 people · 2017 | 7/30 | SYR4 |
| Dibromoacetic Acid | 4.6 µg/L No EPA limit set Highest in the city: MOORELAND WATER CORP · 68 people · 2017 | 4/30 | SYR4 |
| Arsenic | 2.9 µg/L 29% of the EPA limit 10 µg/L Main supplier: GIG HARBOR WATER DEPT · 16,510 people · 2019
Highest in the city: 4.4 µg/L — POINT FOSDICK · 209 people · 2018 | 9/30 | SYR4 |
| Lead | 1 µg/L 6.7% of the EPA limit 15 µg/L Main supplier: GIG HARBOR WATER DEPT · 16,510 people · 2019
Highest in the city: 4 µg/L — OLYMPIC SUNSET WEST · 410 people · 2018 | 4/30 | SYR4 |
| Dibromochloromethane | 3.41 µg/L No EPA limit set Highest in the city: SUNNYVIEW TERRACE ASSOCIATION INC · 45 people · 2017 | 8/30 | SYR4 |
| Trichloroacetic Acid | 2.8 µg/L No EPA limit set Highest in the city: FOREST PARK WATER SYSTEM · 120 people · 2017 | 3/30 | SYR4 |
| Bromodichloromethane | 0.5500 µg/L No EPA limit set Main supplier: GIG HARBOR WATER DEPT · 16,510 people · 2019
Highest in the city: 2.36 µg/L — WOLLOCHET HARBOR CLUB INC · 221 people · 2017 | 9/30 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.9500 µg/L 16% of the EPA limit 6 µg/L Highest in the city: CANTERWOOD WATER SYSTEM · 1,805 people · 2018 | 1/30 | SYR4 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: GIG HARBOR WATER DEPT · 16,510 people · 2023
Highest in the city: 0.0120 mg/L — SUNNYVIEW TERRACE ASSOCIATION INC · 45 people · 2020 | 30/30 | LCR |
Water suppliers serving Gig Harbor
Frequently asked questions about Gig Harbor tap water
Is Gig Harbor tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Gig Harbor. 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 Gig Harbor?
30 public water suppliers report drinking-water monitoring for Gig Harbor, Washington to the EPA. Each is listed above with its population served.
What contaminants are in Gig Harbor's water?
The contaminants EPA monitoring detected in Gig Harbor include Nitrate, Nitrate-Nitrite, TTHM, Copper, Bromoform. 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.