Is Granite Falls Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Yellow Medicine

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	1996-04-01 → 1996-04-30
MR	Monitoring	Archived	1996-04-01 → 1996-04-30
MR	Monitoring	Archived	1996-04-01 → 1996-04-30

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
Fluoride	1100 µg/L 28% of the EPA limit 4000 µg/L	32/32	SYR4	2012–2019
Copper	167.45 µg/L 13% of the EPA limit 1300 µg/L worst single sample: 176 µg/L	20/20	SYR4	2014–2017
Lead	15.64 µg/L 104% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 17.4 µg/L	17/20	SYR4	2014–2017
Nitrate-Nitrite	1200 µg/L 12% of the EPA limit 10000 µg/L	14/16	SYR4	2012–2019
Chloroform	3.315 µg/L No EPA limit set worst single sample: 4.8 µg/L	10/10	SYR4	2012–2019
Dichloroacetic Acid	3.03 µg/L No EPA limit set worst single sample: 3.3 µg/L	4/9	SYR4	2012–2019
Lead	0.0100 mg/L 67% of the EPA limit 0.0150 mg/L	1/1	LCR	2023

40 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBariumBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDibromoacetic AcidDibromochloromethaneEthylene DibromideEthylbenzeneGross Alpha, Excl. Radon And UMercuryMonobromoacetic AcidMonochloroacetic AcidSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Phone: 3205643011
Email: [email protected]

Frequently asked questions about Granite Falls

Is Granite Falls tap water safe to drink?

EPA monitoring detected 7 contaminants in Granite Falls'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 Granite Falls's water?

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

How many people does Granite Falls serve?

Granite Falls reports serving 2,843 people in Minnesota, per its EPA record.

Has Granite Falls had any water quality violations?

The EPA has 3 violations on file for Granite Falls, 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.