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Tap water quality report

Gilby, ND

EPA monitoring detected 18 contaminants across the 1 water supplier serving Gilby. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

1
water supplier
3,438
people served
18
contaminants found
North Dakota rankings Lead in North Dakota PFAS in North Dakota

What was found in Gilby'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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
790 µg/L 7.9%
of the EPA limit 10000 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Fluoride
607 µg/L 15%
of the EPA limit 4000 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2017
1/1 SYR4
Nitrate
340 µg/L 3.4%
of the EPA limit 10000 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2018
1/1 SYR4
Copper
264.85 µg/L 20%
of the EPA limit 1300 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Barium
31 µg/L 1.6%
of the EPA limit 2000 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2017
1/1 SYR4
TTHM
9.981 µg/L 12%
of the EPA limit 80 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Lead
7.854 µg/L 52%
of the EPA limit 15 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Dibromochloromethane
4.509 µg/L
No EPA limit set
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Dibromoacetic Acid
3.571 µg/L
No EPA limit set
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
3.571 µg/L 6%
of the EPA limit 60 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Arsenic
2.6 µg/L 26%
of the EPA limit 10 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2016
1/1 SYR4
Bromodichloromethane
2.397 µg/L
No EPA limit set
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Bromoform
2.353 µg/L
No EPA limit set
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Combined Uranium
2.08 µg/L 6.9%
of the EPA limit 30 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2017
1/1 SYR4
Chloroform
0.8680 µg/L
No EPA limit set
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Dinoseb
0.5900 µg/L 8.4%
of the EPA limit 7 µg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
0.4500 pCi/L 9%
of the EPA limit 5 pCi/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2017
1/1 SYR4
Lead
0.0031 mg/L 21%
of the EPA limit 0.0150 mg/L
Main supplier: AGASSIZ WATER USERS DISTRICT · 3,438 people · 2025
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 Gilby

SupplierPopulation served
AGASSIZ WATER USERS DISTRICT 3,438

Frequently asked questions about Gilby tap water

Is Gilby tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Gilby. 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 Gilby?

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

What contaminants are in Gilby's water?

The contaminants EPA monitoring detected in Gilby include Nitrate-Nitrite, Fluoride, Nitrate, Copper, Barium. 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.