Compliance record
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHXS | 0.0047 µg/L | 2/2 | 2024 |
Other contaminants detected
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 this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 597.05 µg/L 46% of the EPA limit 1300 µg/L
worst single sample: 891 µg/L | 90/90 | SYR4 | 2012–2018 |
| Lead | 24.935 µg/L 166% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 43.9 µg/L | 48/90 | SYR4 | 2012–2018 |
| Chloroform | 1 µg/L No EPA limit set
worst single sample: 1.2 µg/L | 32/32 | SYR4 | 2012–2019 |
| Fluoride | 950 µg/L 24% of the EPA limit 4000 µg/L
worst single sample: 990 µg/L | 31/32 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 1100 µg/L 11% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Lead | 0.0080 mg/L 53% of the EPA limit 0.0150 mg/L | 13/13 | LCR | 2024 |
| Dichloroacetic Acid | 1.2 µg/L No EPA limit set | 6/29 | SYR4 | 2012–2019 |
| Chromium | 0.5710 µg/L 0.6% of the EPA limit 100 µg/L
worst single sample: 0.5800 µg/L | 4/4 | SYR4 | 2014 |
| Arsenic | 2.0215 µg/L 20% of the EPA limit 10 µg/L
worst single sample: 2.04 µg/L | 2/2 | SYR4 | 2018–2019 |
| Bromodichloromethane | 0.2950 µg/L No EPA limit set
worst single sample: 0.3000 µg/L | 2/31 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 1.195 µg/L No EPA limit set
worst single sample: 1.2 µg/L | 2/29 | SYR4 | 2012–2019 |
| Lithium | 59.1 µg/L No EPA limit set | 2/2 | UCMR-5 | 2024 |
79 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAtrazineBhc-GammaBenzeneBenzo(A)PyreneBromoformChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Marshall
Is Marshall tap water safe to drink?
EPA monitoring detected 13 contaminants in Marshall's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Marshall's water?
EPA monitoring detected Copper, Lead, Chloroform, Fluoride, Nitrate-Nitrite, and others. The full list with the level and data source for each is above.
How many people does Marshall serve?
Marshall reports serving 13,890 people in Minnesota, per its EPA record.
Has Marshall had any water quality violations?
The EPA has no formal drinking-water violations on file for Marshall.
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.