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Tap water quality report

Mandaree Water Plant

EPA monitoring tested this supplier for 69 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
12
detected
1,034
people served
13
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.

13
health-based violations
71
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2012-11-01 → 2012-11-30
TT Health-based Resolved 2012-11-01 → 2012-11-30
TT Health-based Resolved 2011-10-01 → 2011-12-31
TT Health-based Resolved 2011-10-01 → 2011-12-31
TT Health-based Resolved 2011-10-01 → 2011-12-31
TT Health-based Resolved 2011-07-01 → 2011-09-30
TT Health-based Resolved 2011-07-01 → 2011-09-30
TT Health-based Resolved 2011-07-01 → 2011-09-30
MCL Health-based Resolved 2011-01-01 → 2011-03-31
MCL Health-based Resolved 2011-01-01 → 2011-03-31

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
Total Haloacetic Acids (HAA5)
39.615 µg/L 66%
of the EPA limit 60 µg/L
worst single sample: 74.86 µg/L
31/31 SYR4 2012–2019
TTHM
86.36 µg/L 108%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 92.24 µg/L
30/31 SYR4 2012–2019
Nitrate-Nitrite
358 µg/L 3.6%
of the EPA limit 10000 µg/L
 20/20 SYR4 2012–2019
Copper
581.6 µg/L 45%
of the EPA limit 1300 µg/L
worst single sample: 752 µg/L
9/10 SYR4 2018
Lead
0.0035 mg/L 23%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2024
Lead
6.352 µg/L 42%
of the EPA limit 15 µg/L
worst single sample: 6.39 µg/L
3/10 SYR4 2018
Arsenic
1.16 µg/L 12%
of the EPA limit 10 µg/L
 1/1 SYR4 2013
Barium
47.2 µg/L 2.4%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Chromium
27.1 µg/L 27%
of the EPA limit 100 µg/L
 1/1 SYR4 2013
Fluoride
540 µg/L 14%
of the EPA limit 4000 µg/L
 1/1 SYR4 2013
Selenium
0.1340 µg/L 0.3%
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
57 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor 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 Mandaree Water Plant

Is Mandaree Water Plant tap water safe to drink?

EPA monitoring detected 12 contaminants in Mandaree 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 Mandaree Water Plant's water?

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

How many people does Mandaree Water Plant serve?

Mandaree Water Plant reports serving 1,034 people in North Dakota, per its EPA record.

Has Mandaree Water Plant had any water quality violations?

The EPA has 71 violations on file for Mandaree Water Plant, of which 13 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.