Is Monticello Tap Water Safe? Quality Report

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

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
MR	Monitoring	Archived	1999-05-01 → 1999-05-31
MR	Monitoring	Archived	1999-05-01 → 1999-05-31
MR	Monitoring	Archived	1999-05-01 → 1999-05-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
Pfba	0.0062 µg/L	3/8	2025
PFHXS	0.0058 µg/L	2/8	2025

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	554.3 µg/L 43% of the EPA limit 1300 µg/L worst single sample: 1280 µg/L	90/90	SYR4	2013–2019
Lead	11.17 µg/L 74% of the EPA limit 15 µg/L worst single sample: 51 µg/L	60/90	SYR4	2013–2019
Nitrate-Nitrite	1200 µg/L 12% of the EPA limit 10000 µg/L	38/64	SYR4	2012–2019
Fluoride	1200 µg/L 30% of the EPA limit 4000 µg/L worst single sample: 1300 µg/L	34/34	SYR4	2012–2019
Chloroform	5 µg/L No EPA limit set worst single sample: 6.6 µg/L	31/37	SYR4	2012–2019
Bromodichloromethane	4.6 µg/L No EPA limit set worst single sample: 5.9 µg/L	29/36	SYR4	2012–2019
Dichloroacetic Acid	2.895 µg/L No EPA limit set worst single sample: 3.2 µg/L	28/29	SYR4	2012–2019
Dibromochloromethane	2.58 µg/L No EPA limit set worst single sample: 3.3 µg/L	17/36	SYR4	2012–2019
Trichloroacetic Acid	2.82 µg/L No EPA limit set worst single sample: 2.9 µg/L	17/29	SYR4	2012–2019
Lead	0.0040 mg/L 27% of the EPA limit 0.0150 mg/L	14/14	LCR	2025
Barium	373.55 µg/L 19% of the EPA limit 2000 µg/L worst single sample: 395 µg/L	4/4	SYR4	2013–2017
Arsenic	7.137 µg/L 71% of the EPA limit 10 µg/L worst single sample: 7.44 µg/L	2/4	SYR4	2013–2017
Lithium	10.3 µg/L No EPA limit set	2/8	UCMR-5	2025
Gross Alpha, Excl. Radon And U	7 pCi/L 47% of the EPA limit 15 pCi/L	1/5	SYR4	2016–2019

85 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, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Phone: 7632713275
Email: [email protected]

Frequently asked questions about Monticello

Is Monticello tap water safe to drink?

EPA monitoring detected 16 contaminants in Monticello'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 Monticello's water?

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

How many people does Monticello serve?

Monticello reports serving 15,087 people in Minnesota, per its EPA record.

Has Monticello had any water quality violations?

The EPA has 3 violations on file for Monticello, 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.