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Tap water quality report

Oswego, KS

EPA monitoring detected 24 contaminants across the 3 water suppliers serving Oswego. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

3
water suppliers
3,600
people served
24
contaminants found
Kansas rankings Lead in Kansas PFAS in Kansas

What was found in Oswego'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
Chlorite
3300 µg/L 330%
of the EPA limit, in the worst sample — 1000 µg/L
 1/3 SYR4
Nitrate
2200 µg/L 22%
of the EPA limit 10000 µg/L
 1/3 SYR4
Copper
620 µg/L 48%
of the EPA limit 1300 µg/L
 3/3 SYR4
Total Haloacetic Acids (HAA5)
210 µg/L 350%
of the EPA limit, in the worst sample — 60 µg/L
 3/3 SYR4
Fluoride
190 µg/L 4.8%
of the EPA limit 4000 µg/L
 1/3 SYR4
TTHM
160 µg/L 200%
of the EPA limit, in the worst sample — 80 µg/L
 3/3 SYR4
Chloroform
120 µg/L
No EPA limit set
 3/3 SYR4
Barium
110 µg/L 5.5%
of the EPA limit 2000 µg/L
 1/3 SYR4
Trichloroacetic Acid
110 µg/L
No EPA limit set
 3/3 SYR4
Dichloroacetic Acid
90 µg/L
No EPA limit set
 3/3 SYR4
Bromodichloromethane
38 µg/L
No EPA limit set
 3/3 SYR4
Lead
24 µg/L 160%
of the EPA limit, in the worst sample — 15 µg/L
 3/3 SYR4
Dibromochloromethane
15 µg/L
No EPA limit set
 3/3 SYR4
Atrazine
10 µg/L 333%
of the EPA limit, in the worst sample — 3 µg/L
 1/3 SYR4
Monochloroacetic Acid
10 µg/L
No EPA limit set
 3/3 SYR4
Dibromoacetic Acid
3.9 µg/L
No EPA limit set
 3/3 SYR4
Xylenes, Total
3.8 µg/L 0%
of the EPA limit 10000 µg/L
 1/3 SYR4
Chromium
2.5 µg/L 2.5%
of the EPA limit 100 µg/L
 1/3 SYR4
Bromoform
2.3 µg/L
No EPA limit set
 2/3 SYR4
Monobromoacetic Acid
1.8 µg/L
No EPA limit set
 3/3 SYR4
Selenium
1.3 µg/L 2.6%
of the EPA limit 50 µg/L
 1/3 SYR4
Arsenic
1.1 µg/L 11%
of the EPA limit 10 µg/L
 1/3 SYR4
Ethylbenzene
0.7600 µg/L 0.1%
of the EPA limit 700 µg/L
 1/3 SYR4
Lead
0.0032 mg/L 21%
of the EPA limit 0.0150 mg/L
 3/3 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 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 Oswego

SupplierPopulation served
OSWEGO, CITY OF 1,680
LABETTE CO RWD 5 1,635
LABETTE CO RWD 1C 285

Frequently asked questions about Oswego tap water

Is Oswego tap water safe to drink?

EPA testing detected 24 contaminants in the water serving Oswego. 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 Oswego?

3 public water suppliers report drinking-water monitoring for Oswego, Kansas to the EPA. Each is listed above with its population served.

What contaminants are in Oswego's water?

The contaminants EPA monitoring detected in Oswego include Chlorite, Nitrate, Copper, Total Haloacetic Acids (HAA5), Fluoride. 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.