← Coos Bay, OR

Tap water quality report

ZIP 97420 — Coos Bay, OR

EPA monitoring across the 1 water supplier serving ZIP 97420 in Coos Bay, OR detected 13 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

1
water supplier
34,500
people served
13
contaminants found

What was found in ZIP 97420

The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
713 µg/L 18%
of the EPA limit 4000 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
Nitrate
642 µg/L 6.4%
of the EPA limit 10000 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
Nitrate-Nitrite
211 µg/L 2.1%
of the EPA limit 10000 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
Copper
86.79 µg/L 6.7%
of the EPA limit 1300 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
TTHM
50.58 µg/L 63%
of the EPA limit 80 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
23.465 µg/L 39%
of the EPA limit 60 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
Barium
10.7 µg/L 0.5%
of the EPA limit 2000 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
Arsenic
4 µg/L 40%
of the EPA limit 10 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
Lead
2.69 µg/L 18%
of the EPA limit 15 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
2.5 pCi/L 50%
of the EPA limit 5 pCi/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2014
1/1 SYR4
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2019
1/1 SYR4
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
Main supplier: COOS BAY NORTH BEND WTR BRD · 34,500 people · 2023
1/1 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.

Water suppliers serving ZIP 97420

SupplierStatePopulation served
COOS BAY NORTH BEND WTR BRD OR 34,500

Frequently asked questions about ZIP 97420 tap water

Is the tap water in ZIP 97420 safe to drink?

EPA testing detected 13 contaminants across the water suppliers serving ZIP 97420. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 97420?

1 public water supplier report EPA drinking-water monitoring for ZIP 97420. Each is listed above with its population served.

What contaminants are in ZIP 97420's water?

EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.