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Tap water quality report

Klamath Falls, OR

EPA monitoring detected 19 contaminants across the 15 water suppliers serving Klamath Falls. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

15
water suppliers
43,289
people served
19
contaminants found
Oregon rankings Lead in Oregon PFAS in Oregon

What was found in Klamath Falls's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
4100 µg/L 41%
of the EPA limit 10000 µg/L
 15/15 SYR4
Nitrate-Nitrite
4100 µg/L 41%
of the EPA limit 10000 µg/L
 8/15 SYR4
Fluoride
1320 µg/L 33%
of the EPA limit 4000 µg/L
 2/15 SYR4
Copper
545 µg/L 42%
of the EPA limit 1300 µg/L
 12/15 SYR4
Nitrite
157 µg/L 16%
of the EPA limit 1000 µg/L
 2/15 SYR4
Barium
56.9 µg/L 2.8%
of the EPA limit 2000 µg/L
 6/15 SYR4
Total Haloacetic Acids (HAA5)
11.7 µg/L 19%
of the EPA limit 60 µg/L
 1/15 SYR4
Lead
9.35 µg/L 62%
of the EPA limit 15 µg/L
 12/15 SYR4
Arsenic
7.5 µg/L 75%
of the EPA limit 10 µg/L
 9/15 SYR4
Gross Alpha, Excl. Radon And U
5.8 pCi/L 39%
of the EPA limit 15 pCi/L
 5/15 SYR4
TTHM
5.63 µg/L 7%
of the EPA limit 80 µg/L
 5/15 SYR4
Combined Radium (-226 And -228)
2.3 pCi/L 46%
of the EPA limit 5 pCi/L
 2/15 SYR4
Chromium
1.58 µg/L 1.6%
of the EPA limit 100 µg/L
 2/15 SYR4
Selenium
0.8340 µg/L 1.7%
of the EPA limit 50 µg/L
 3/15 SYR4
Combined Uranium
0.2000 µg/L 0.7%
of the EPA limit 30 µg/L
 1/15 SYR4
PFOS
0.0095 µg/L
No EPA limit set
 1/15 UCMR-5
PFHXS
0.0058 µg/L
No EPA limit set
 1/15 UCMR-5
Lead
0.0043 mg/L 29%
of the EPA limit 0.0150 mg/L
 15/15 LCR
PFBS
0.0043 µg/L
No EPA limit set
 1/15 UCMR-5
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 single worst sample on record — 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 Klamath Falls

SupplierPopulation served
KLAMATH FALLS WATER DEPT 40,475
OREGON WATER UTILITIES - MOUNTAIN LAKES 770
FALCON HEIGHTS 559
ROUND LAKE WATER UTILITIES 250
SKYLINE VIEW DIST IMPROVEMENT 250
OREGON WATER UTILITIES - SOUTHVIEW 250
PINE GROVE WATER DIST (KLAMATH) 180
CROSSROADS MOBILE HOME PARK 150
RIDGEWATER WATER SYSTEM 80
OREGON WATER UTILITIES-PINECREST 78
SHIELD CREST WATER ASSN 65
COLLIER LANE HOA 60
SHIELD CREST CONDOS 45
COVE PARTNERSHIP 40
KLAMATH CO PROJECT HOMEFRONT 37

Frequently asked questions about Klamath Falls tap water

Is Klamath Falls tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Klamath Falls. 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 Klamath Falls?

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

What contaminants are in Klamath Falls's water?

The contaminants EPA monitoring detected in Klamath Falls include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Nitrite. The full list, with the highest level found 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.