Tap WaterIndex

← Minnesota

Tap water quality report

Mankato

EPA monitoring tested this supplier for 101 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

101
contaminants tested
19
detected
42,803
people served
0
health-based violations
Minnesota rankingsLead in MinnesotaPFAS in Minnesota
Water source
Ground water under surface influence
Ownership
Local government
Counties served
Blue Earth

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
4
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Archived 1994-01-01 → 1994-12-31
MR Monitoring Archived 1994-01-01 → 1994-12-31
MR Monitoring Archived 1994-01-01 → 1994-12-31
MR Monitoring Archived 1994-01-01 → 1994-12-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
18.4 µg/L
No EPA limit set
worst single sample: 22 µg/L
133/134 SYR4 2012–2019
Chloroform
37.8 µg/L
No EPA limit set
worst single sample: 53 µg/L
133/134 SYR4 2012–2019
Dibromochloromethane
9.44 µg/L
No EPA limit set
worst single sample: 13 µg/L
133/134 SYR4 2012–2019
Dichloroacetic Acid
15 µg/L
No EPA limit set
worst single sample: 20 µg/L
128/128 SYR4 2012–2019
Trichloroacetic Acid
7 µg/L
No EPA limit set
worst single sample: 9.7 µg/L
128/128 SYR4 2012–2019
Dibromoacetic Acid
3 µg/L
No EPA limit set
worst single sample: 3.4 µg/L
127/128 SYR4 2012–2019
Bromoform
2.2 µg/L
No EPA limit set
worst single sample: 3.1 µg/L
123/133 SYR4 2012–2019
Copper
111.95 µg/L 8.6%
of the EPA limit 1300 µg/L
worst single sample: 167 µg/L
90/90 SYR4 2013–2019
Nitrate-Nitrite
3965 µg/L 40%
of the EPA limit 10000 µg/L
worst single sample: 4200 µg/L
68/102 SYR4 2012–2019
Fluoride
1100 µg/L 28%
of the EPA limit 4000 µg/L
 33/33 SYR4 2012–2019
Lead
4.04 µg/L 27%
of the EPA limit 15 µg/L
worst single sample: 13.6 µg/L
29/90 SYR4 2013–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Chromium
0.4710 µg/L 0.5%
of the EPA limit 100 µg/L
worst single sample: 0.4800 µg/L
7/10 SYR4 2014–2017
Lithium
34.8 µg/L
No EPA limit set
 6/6 UCMR-5 2023
Arsenic
4.736 µg/L 47%
of the EPA limit 10 µg/L
worst single sample: 4.77 µg/L
2/2 SYR4 2014–2017
Barium
31.25 µg/L 1.6%
of the EPA limit 2000 µg/L
worst single sample: 31.3 µg/L
2/2 SYR4 2014–2017
Gross Alpha, Excl. Radon And U
4.78 pCi/L 32%
of the EPA limit 15 pCi/L
worst single sample: 4.8 pCi/L
2/3 SYR4 2014–2017
Atrazine
0.1000 µg/L 3.3%
of the EPA limit 3 µg/L
 1/6 SYR4 2012–2019
Monobromoacetic Acid
1.3 µg/L
No EPA limit set
 1/128 SYR4 2012–2019
82 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-PF3ONSAdonaAntimony, TotalBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Phone
5073878693
Email
[email protected]

Frequently asked questions about Mankato

Is Mankato tap water safe to drink?

EPA monitoring detected 19 contaminants in Mankato'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 Mankato's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, Trichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Mankato serve?

Mankato reports serving 42,803 people in Minnesota, per its EPA record.

Has Mankato had any water quality violations?

The EPA has 4 violations on file for Mankato, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.