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Tap water quality report

Ray, ND

EPA monitoring detected 18 contaminants across the 2 water suppliers serving Ray. 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.

2
water suppliers
1,953
people served
18
contaminants found
North Dakota rankings Lead in North Dakota PFAS in North Dakota

What was found in Ray'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
Copper
854.3 µg/L 66%
of the EPA limit 1300 µg/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2018
2/2 SYR4
Fluoride
710 µg/L 18%
of the EPA limit 4000 µg/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2016
1/2 SYR4
Nitrate-Nitrite
320 µg/L 3.2%
of the EPA limit 10000 µg/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2019
1/2 SYR4
Lead
37.6625 µg/L 251%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2018
2/2 SYR4
TTHM
17.4415 µg/L 22%
of the EPA limit 80 µg/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2019
2/2 SYR4
Dibromoacetic Acid
13.476 µg/L
No EPA limit set
Highest in the city: RAY CITY OF · 950 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
9.455 µg/L 16%
of the EPA limit 60 µg/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2019
Highest in the city: 12.5115 µg/L — RAY CITY OF · 950 people · 2019
2/2 SYR4
Chloroform
11.593 µg/L
No EPA limit set
Main supplier: R & T WATER SYSTEM · 1,003 people · 2019
Highest in the city: 11.638 µg/L — RAY CITY OF · 950 people · 2019
2/2 SYR4
Dichloroacetic Acid
7.825 µg/L
No EPA limit set
Main supplier: R & T WATER SYSTEM · 1,003 people · 2019
Highest in the city: 8.091 µg/L — RAY CITY OF · 950 people · 2019
2/2 SYR4
Bromodichloromethane
4.53 µg/L
No EPA limit set
Main supplier: R & T WATER SYSTEM · 1,003 people · 2019
2/2 SYR4
Barium
3.74 µg/L 0.2%
of the EPA limit 2000 µg/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2016
1/2 SYR4
Monobromoacetic Acid
3.38 µg/L
No EPA limit set
Highest in the city: RAY CITY OF · 950 people · 2019
1/2 SYR4
Trichloroacetic Acid
1.967 µg/L
No EPA limit set
Main supplier: R & T WATER SYSTEM · 1,003 people · 2019
Highest in the city: 2.844 µg/L — RAY CITY OF · 950 people · 2019
2/2 SYR4
Dibromochloromethane
2.0725 µg/L
No EPA limit set
Main supplier: R & T WATER SYSTEM · 1,003 people · 2019
2/2 SYR4
Arsenic
1.31 µg/L 13%
of the EPA limit 10 µg/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2016
1/2 SYR4
Combined Radium (-226 And -228)
1.21 pCi/L 24%
of the EPA limit 5 pCi/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2017
1/2 SYR4
Combined Uranium
0.4700 µg/L 1.6%
of the EPA limit 30 µg/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2017
1/2 SYR4
Lead
0.0017 mg/L 11%
of the EPA limit 0.0150 mg/L
Main supplier: R & T WATER SYSTEM · 1,003 people · 2024
2/2 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 Ray

SupplierPopulation served
R & T WATER SYSTEM 1,003
RAY CITY OF 950

Frequently asked questions about Ray tap water

Is Ray tap water safe to drink?

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

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

What contaminants are in Ray's water?

The contaminants EPA monitoring detected in Ray include Copper, Fluoride, Nitrate-Nitrite, Lead, 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.