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Tap water quality report

Twin Buttes Water Plant

EPA monitoring tested this supplier for 69 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
11
detected
792
people served
15
health-based violations
North Dakota rankingsLead in North DakotaPFAS in North Dakota
Water source
Surface water
Ownership
Federal government

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.

15
health-based violations
111
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2021-04-01 → 2021-06-30
MCL Health-based Resolved 2021-01-01 → 2021-03-31
MCL Health-based Resolved 2021-01-01 → 2021-03-31
MCL Health-based Resolved 2020-10-01 → 2020-12-31
MCL Health-based Resolved 2020-10-01 → 2020-12-31
MCL Health-based Resolved 2020-07-01 → 2020-09-30
MCL Health-based Resolved 2020-07-01 → 2020-09-30
MCL Health-based Resolved 2020-04-01 → 2020-06-30
MCL Health-based Resolved 2020-04-01 → 2020-06-30
MCL Health-based Resolved 2020-01-01 → 2020-03-31

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
TTHM
96.185 µg/L 120%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 98.46 µg/L
31/31 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
74.925 µg/L 125%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 80.7 µg/L
31/31 SYR4 2012–2019
Fluoride
1212.5 µg/L 30%
of the EPA limit 4000 µg/L
worst single sample: 1250 µg/L
16/17 SYR4 2013–2015
Nitrate-Nitrite
188 µg/L 1.9%
of the EPA limit 10000 µg/L
 14/18 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2023
Copper
700 µg/L 54%
of the EPA limit 1300 µg/L
worst single sample: 740 µg/L
5/5 SYR4 2017
Lead
7.775 µg/L 52%
of the EPA limit 15 µg/L
worst single sample: 8 µg/L
2/5 SYR4 2017
Barium
598 µg/L 30%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Gross Alpha, Excl. Radon And U
3 pCi/L 20%
of the EPA limit 15 pCi/L
 1/1 SYR4 2014
Selenium
1.5 µg/L 3%
of the EPA limit 50 µg/L
 1/1 SYR4 2013
Thallium, Total
1 µg/L 50%
of the EPA limit 2 µg/L
 1/1 SYR4 2013
58 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SILVERIA, JOSEPH
Phone
701-627-8181
Email
[email protected]

Frequently asked questions about Twin Buttes Water Plant

Is Twin Buttes Water Plant tap water safe to drink?

EPA monitoring detected 11 contaminants in Twin Buttes Water Plant'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 Twin Buttes Water Plant's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Fluoride, Nitrate-Nitrite, Lead, and others. The full list with the level and data source for each is above.

How many people does Twin Buttes Water Plant serve?

Twin Buttes Water Plant reports serving 792 people in North Dakota, per its EPA record.

Has Twin Buttes Water Plant had any water quality violations?

The EPA has 111 violations on file for Twin Buttes Water Plant, of which 15 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.