Tap WaterIndex

← Oregon

Tap water quality report

Silverton, OR

EPA monitoring detected 8 contaminants across the 2 water suppliers serving Silverton. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
10,529
people served
8
contaminants found
Oregon rankings Lead in Oregon PFAS in Oregon

What was found in Silverton'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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
605 µg/L 6.1%
of the EPA limit 10000 µg/L
Main supplier: SILVERTON, CITY OF · 10,484 people · 2019
1/2 SYR4
Copper
320.6 µg/L 25%
of the EPA limit 1300 µg/L
Main supplier: SILVERTON, CITY OF · 10,484 people · 2017
1/2 SYR4
Lead
40.435 µg/L 270%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: SILVERTON, CITY OF · 10,484 people · 2017
2/2 SYR4
TTHM
14.1 µg/L 18%
of the EPA limit 80 µg/L
Main supplier: SILVERTON, CITY OF · 10,484 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
12.07 µg/L 20%
of the EPA limit 60 µg/L
Main supplier: SILVERTON, CITY OF · 10,484 people · 2019
1/2 SYR4
Gross Alpha, Excl. Radon And U
3.4 pCi/L 23%
of the EPA limit 15 pCi/L
Highest in the city: SILVERTON MOBILE ESTATES · 45 people · 2012
1/2 SYR4
Combined Radium (-226 And -228)
2.1 pCi/L 42%
of the EPA limit 5 pCi/L
Main supplier: SILVERTON, CITY OF · 10,484 people · 2017
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: SILVERTON, CITY OF · 10,484 people · 2023
Highest in the city: 0.0012 mg/L — SILVERTON MOBILE ESTATES · 45 people · 2025
2/2 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 Silverton

SupplierPopulation served
SILVERTON, CITY OF 10,484
SILVERTON MOBILE ESTATES 45

Frequently asked questions about Silverton tap water

Is Silverton tap water safe to drink?

EPA testing detected 8 contaminants in the water serving Silverton. 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 Silverton?

2 public water suppliers report drinking-water monitoring for Silverton, Oregon to the EPA. Each is listed above with its population served.

What contaminants are in Silverton's water?

The contaminants EPA monitoring detected in Silverton include Nitrate, Copper, Lead, TTHM, 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.