Is Grafton, ND Tap Water Safe? Quality & Contaminants

What was found in Grafton'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	2280 µg/L 23% of the EPA limit 10000 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2017	1/2	SYR4
Nitrate-Nitrite	2156 µg/L 22% of the EPA limit 10000 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2019	1/2	SYR4
Fluoride	712 µg/L 18% of the EPA limit 4000 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2017	1/2	SYR4
Lithium	89.1 µg/L No EPA limit set Main supplier: GRAFTON CITY OF · 4,284 people · 2025	1/2	UCMR-5
TTHM	74.77 µg/L 93% of the EPA limit 80 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2019	2/2	SYR4
Chloroform	57.416 µg/L No EPA limit set Main supplier: GRAFTON CITY OF · 4,284 people · 2019	2/2	SYR4
Copper	56.89 µg/L 4.4% of the EPA limit 1300 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2018	2/2	SYR4
Total Haloacetic Acids (HAA5)	43.688 µg/L 73% of the EPA limit 60 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2019	2/2	SYR4
Dichloroacetic Acid	33.14 µg/L No EPA limit set Main supplier: GRAFTON CITY OF · 4,284 people · 2019	2/2	SYR4
Nitrite	21 µg/L 2.1% of the EPA limit 1000 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2017	1/2	SYR4
Bromodichloromethane	17.838 µg/L No EPA limit set Main supplier: GRAFTON CITY OF · 4,284 people · 2019	2/2	SYR4
Lead	15.6 µg/L 104% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2018	2/2	SYR4
Dibromochloromethane	10.624 µg/L No EPA limit set Main supplier: GRAFTON CITY OF · 4,284 people · 2019	2/2	SYR4
Barium	9.33 µg/L 0.5% of the EPA limit 2000 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2017	1/2	SYR4
Trichloroacetic Acid	8.5965 µg/L No EPA limit set Main supplier: GRAFTON CITY OF · 4,284 people · 2019	2/2	SYR4
Monochloroacetic Acid	5.4875 µg/L No EPA limit set Main supplier: GRAFTON CITY OF · 4,284 people · 2019	1/2	SYR4
Xylenes, Total	5.17 µg/L 0.1% of the EPA limit 10000 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2017	1/2	SYR4
Dibromoacetic Acid	3.28 µg/L No EPA limit set Main supplier: GRAFTON CITY OF · 4,284 people · 2019 Highest in the city: 4.813 µg/L — WALSH RURAL WATER DISTRICT · 3,000 people · 2019	2/2	SYR4
Bromoform	4.116 µg/L No EPA limit set Main supplier: GRAFTON CITY OF · 4,284 people · 2019	2/2	SYR4
Ethylbenzene	0.7100 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2017	1/2	SYR4
Pentachlorophenol	0.0200 µg/L 2% of the EPA limit 1 µg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2017	1/2	SYR4
Lead	0.0097 mg/L 65% of the EPA limit 0.0150 mg/L Main supplier: GRAFTON CITY OF · 4,284 people · 2024	2/2	LCR
Pfba	0.0059 µg/L No EPA limit set Main supplier: GRAFTON CITY OF · 4,284 people · 2025	1/2	UCMR-5

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 Grafton

Supplier	Population served
GRAFTON CITY OF	4,284
WALSH RURAL WATER DISTRICT	3,000

Frequently asked questions about Grafton tap water

Is Grafton tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Grafton. 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 Grafton?

2 public water suppliers report drinking-water monitoring for Grafton, North Dakota to the EPA. Each is listed above with its population served.

What contaminants are in Grafton's water?

The contaminants EPA monitoring detected in Grafton include Nitrate, Nitrate-Nitrite, Fluoride, Lithium, TTHM. 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.