Is Grenora, ND Tap Water Safe? Quality & Contaminants

What was found in Grenora's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	2150 µg/L 22% of the EPA limit 10000 µg/L Main supplier: GRENORA CITY OF · 244 people · 2015	1/1	SYR4
Nitrate-Nitrite	1670.4 µg/L 17% of the EPA limit 10000 µg/L Main supplier: GRENORA CITY OF · 244 people · 2019	1/1	SYR4
Copper	582.5 µg/L 45% of the EPA limit 1300 µg/L Main supplier: GRENORA CITY OF · 244 people · 2019	1/1	SYR4
Barium	169 µg/L 8.5% of the EPA limit 2000 µg/L Main supplier: GRENORA CITY OF · 244 people · 2016	1/1	SYR4
Fluoride	83 µg/L 2.1% of the EPA limit 4000 µg/L Main supplier: GRENORA CITY OF · 244 people · 2016	1/1	SYR4
Lithium	16.7 µg/L No EPA limit set Main supplier: GRENORA CITY OF · 244 people · 2023	1/1	UCMR-5
Lead	2.528 µg/L 17% of the EPA limit 15 µg/L Main supplier: GRENORA CITY OF · 244 people · 2019	1/1	SYR4
Gross Alpha, Excl. Radon And U	2.32 pCi/L 15% of the EPA limit 15 pCi/L Main supplier: GRENORA CITY OF · 244 people · 2017	1/1	SYR4
Combined Uranium	2.2025 µg/L 7.3% of the EPA limit 30 µg/L Main supplier: GRENORA CITY OF · 244 people · 2017	1/1	SYR4
Dichloroacetic Acid	1.5 µg/L No EPA limit set Main supplier: GRENORA CITY OF · 244 people · 2017	1/1	SYR4
Total Haloacetic Acids (HAA5)	1.5 µg/L 2.5% of the EPA limit 60 µg/L Main supplier: GRENORA CITY OF · 244 people · 2017	1/1	SYR4
Combined Radium (-226 And -228)	1.193 pCi/L 24% of the EPA limit 5 pCi/L Main supplier: GRENORA CITY OF · 244 people · 2017	1/1	SYR4
Chloroform	1.03 µg/L No EPA limit set Main supplier: GRENORA CITY OF · 244 people · 2017	1/1	SYR4
TTHM	1.03 µg/L 1.3% of the EPA limit 80 µg/L Main supplier: GRENORA CITY OF · 244 people · 2017	1/1	SYR4
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: GRENORA CITY OF · 244 people · 2027	1/1	LCR

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 the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Grenora

Supplier	Population served
GRENORA CITY OF	244

Frequently asked questions about Grenora tap water

Is Grenora tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Grenora. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Grenora?

1 public water supplier report drinking-water monitoring for Grenora, North Dakota to the EPA. Each is listed above with its population served.

What contaminants are in Grenora's water?

The contaminants EPA monitoring detected in Grenora include Nitrate, Nitrate-Nitrite, Copper, Barium, Fluoride. The full list, with the level at the main supplier and the data source, is in the table above.

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.