Is North Mankato Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Nicollet

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30

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	943.4 µg/L 73% of the EPA limit 1300 µg/L worst single sample: 1290 µg/L	89/89	SYR4	2013–2019
Lead	7 µg/L 47% of the EPA limit 15 µg/L worst single sample: 9.7 µg/L	71/89	SYR4	2013–2019
Chloroform	21.4 µg/L No EPA limit set worst single sample: 24 µg/L	34/34	SYR4	2012–2019
Bromodichloromethane	8.04 µg/L No EPA limit set worst single sample: 8.8 µg/L	33/34	SYR4	2012–2019
Fluoride	1200 µg/L 30% of the EPA limit 4000 µg/L worst single sample: 1300 µg/L	33/33	SYR4	2012–2019
Nitrate-Nitrite	1400 µg/L 14% of the EPA limit 10000 µg/L	32/32	SYR4	2012–2019
Dibromochloromethane	6.4 µg/L No EPA limit set worst single sample: 6.6 µg/L	31/34	SYR4	2012–2019
Dichloroacetic Acid	5.5 µg/L No EPA limit set worst single sample: 6.7 µg/L	25/29	SYR4	2012–2019
Trichloroacetic Acid	3.2 µg/L No EPA limit set worst single sample: 4.2 µg/L	25/29	SYR4	2012–2019
Bromoform	1.82 µg/L No EPA limit set worst single sample: 1.9 µg/L	17/34	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	10.3 pCi/L 69% of the EPA limit 15 pCi/L worst single sample: 11 pCi/L	15/16	SYR4	2012–2019
Lead	0.0030 mg/L 20% of the EPA limit 0.0150 mg/L	14/14	LCR	2023
Dibromoacetic Acid	1.75 µg/L No EPA limit set worst single sample: 1.8 µg/L	11/29	SYR4	2012–2019
Lithium	40.7 µg/L No EPA limit set	4/4	UCMR-5	2025
Chromium	0.3160 µg/L 0.3% of the EPA limit 100 µg/L worst single sample: 0.3200 µg/L	3/9	SYR4	2012–2017
Arsenic	1.53 µg/L 15% of the EPA limit 10 µg/L	1/3	SYR4	2012–2017
Barium	25 µg/L 1.3% of the EPA limit 2000 µg/L	1/3	SYR4	2012–2017

84 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Phone: 5076254141
Email: [email protected]

Frequently asked questions about North Mankato

Is North Mankato tap water safe to drink?

EPA monitoring detected 17 contaminants in North 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 North Mankato's water?

EPA monitoring detected Copper, Lead, Chloroform, Bromodichloromethane, Fluoride, and others. The full list with the level and data source for each is above.

How many people does North Mankato serve?

North Mankato reports serving 14,448 people in Minnesota, per its EPA record.

Has North Mankato had any water quality violations?

The EPA has 21 violations on file for North Mankato, of which 12 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.