Tap WaterIndex

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Tap water quality report

Cooperstown City of

EPA monitoring tested this supplier for 65 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

65
contaminants tested
12
detected
984
people served
0
health-based violations
North Dakota rankingsLead in North DakotaPFAS in North Dakota
Water source
Ground water
Ownership
Local government
Counties served
Griggs

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.

0
health-based violations
11
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2011-10-01 → 2011-10-31
MR Monitoring Resolved 2011-10-01 → 2011-10-31
MR Monitoring Resolved 2011-10-01 → 2011-10-31
MR Monitoring Resolved 2011-10-01 → 2011-10-31
MR Monitoring Resolved 2011-10-01 → 2011-10-31
MR Monitoring Archived 2008-03-01 → 2008-03-31
MR Monitoring Archived 2008-03-01 → 2008-03-31
MR Monitoring Archived 2008-03-01 → 2008-03-31
MR Monitoring Archived 1991-03-01 → 1991-03-31
MR Monitoring Archived 1991-03-01 → 1991-03-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
800.25 µg/L 62%
of the EPA limit 1300 µg/L
worst single sample: 1040 µg/L
30/30 SYR4 2012–2018
Lead
3.6135 µg/L 24%
of the EPA limit 15 µg/L
worst single sample: 6.58 µg/L
18/30 SYR4 2012–2018
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2024
Nitrate-Nitrite
267 µg/L 2.7%
of the EPA limit 10000 µg/L
 6/16 SYR4 2012–2019
Dibromoacetic Acid
2.13 µg/L
No EPA limit set
worst single sample: 2.16 µg/L
2/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
2.13 µg/L 3.6%
of the EPA limit 60 µg/L
worst single sample: 2.16 µg/L
2/8 SYR4 2013–2019
Arsenic
7.12 µg/L 71%
of the EPA limit 10 µg/L
 1/1 SYR4 2016
Barium
9.94 µg/L 0.5%
of the EPA limit 2000 µg/L
 1/1 SYR4 2017
Combined Radium (-226 And -228)
0.6100 pCi/L 12%
of the EPA limit 5 pCi/L
 1/1 SYR4 2017
Combined Uranium
0.1200 µg/L 0.4%
of the EPA limit 30 µg/L
 1/1 SYR4 2017
Fluoride
986 µg/L 25%
of the EPA limit 4000 µg/L
 1/1 SYR4 2017
Gross Alpha, Excl. Radon And U
3.98 pCi/L 27%
of the EPA limit 15 pCi/L
 1/1 SYR4 2017
53 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDibromochloromethaneDichloroacetic AcidDinosebEndrinEthylbenzeneHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
OLSON, CHRISTINE
Phone
701-797-3613
Email
[email protected]

Frequently asked questions about Cooperstown City of

Is Cooperstown City of tap water safe to drink?

EPA monitoring detected 12 contaminants in Cooperstown City of'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 Cooperstown City of's water?

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

How many people does Cooperstown City of serve?

Cooperstown City of reports serving 984 people in North Dakota, per its EPA record.

Has Cooperstown City of had any water quality violations?

The EPA has 11 violations on file for Cooperstown City of, 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.