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Tap water quality report

Marshall, MN

EPA monitoring detected 13 contaminants across the 2 water suppliers serving Marshall. 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
13,979
people served
13
contaminants found
Minnesota rankings Lead in Minnesota PFAS in Minnesota

What was found in Marshall'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-Nitrite
1100 µg/L 11%
of the EPA limit 10000 µg/L
Main supplier: Marshall · 13,890 people · 2019
1/2 SYR4
Fluoride
950 µg/L 24%
of the EPA limit 4000 µg/L
Main supplier: Marshall · 13,890 people · 2019
1/2 SYR4
Copper
597.05 µg/L 46%
of the EPA limit 1300 µg/L
Main supplier: Marshall · 13,890 people · 2018
2/2 SYR4
Lithium
59.1 µg/L
No EPA limit set
Main supplier: Marshall · 13,890 people · 2024
1/2 UCMR-5
Lead
24.935 µg/L 166%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: Marshall · 13,890 people · 2018
1/2 SYR4
Arsenic
2.0215 µg/L 20%
of the EPA limit 10 µg/L
Main supplier: Marshall · 13,890 people · 2019
1/2 SYR4
Dichloroacetic Acid
1.2 µg/L
No EPA limit set
Main supplier: Marshall · 13,890 people · 2019
Highest in the city: 1.49 µg/L — Fairview Township Water Association · 89 people · 2017
2/2 SYR4
Chloroform
1 µg/L
No EPA limit set
Main supplier: Marshall · 13,890 people · 2019
Highest in the city: 1.48 µg/L — Fairview Township Water Association · 89 people · 2017
2/2 SYR4
Trichloroacetic Acid
1.195 µg/L
No EPA limit set
Main supplier: Marshall · 13,890 people · 2019
Highest in the city: 1.2 µg/L — Fairview Township Water Association · 89 people · 2017
2/2 SYR4
Chromium
0.5710 µg/L 0.6%
of the EPA limit 100 µg/L
Main supplier: Marshall · 13,890 people · 2014
1/2 SYR4
Bromodichloromethane
0.2950 µg/L
No EPA limit set
Main supplier: Marshall · 13,890 people · 2019
Highest in the city: 0.4000 µg/L — Fairview Township Water Association · 89 people · 2017
2/2 SYR4
Lead
0.0080 mg/L 53%
of the EPA limit 0.0150 mg/L
Main supplier: Marshall · 13,890 people · 2024
2/2 LCR
PFHXS
0.0047 µg/L
No EPA limit set
Main supplier: Marshall · 13,890 people · 2024
1/2 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 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 Marshall

SupplierPopulation served
Marshall 13,890
Fairview Township Water Association 89

Frequently asked questions about Marshall tap water

Is Marshall tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Marshall. 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 Marshall?

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

What contaminants are in Marshall's water?

The contaminants EPA monitoring detected in Marshall include Nitrate-Nitrite, Fluoride, Copper, Lithium, Lead. 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.