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Tap water quality report

Tiber County Water District

EPA monitoring tested this supplier for 63 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

63
contaminants tested
16
detected
750
people served
66
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Surface water
Ownership
Local government
Counties served
Pondera

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.

66
health-based violations
547
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2023-10-01 → 2023-12-31
MCL Health-based Resolved 2023-10-01 → 2023-12-31
MCL Health-based Resolved 2023-10-01 → 2023-12-31
MCL Health-based Resolved 2023-10-01 → 2023-12-31
MCL Health-based Resolved 2023-10-01 → 2023-12-31
MCL Health-based Resolved 2023-07-01 → 2023-09-30
MCL Health-based Resolved 2023-07-01 → 2023-09-30
MCL Health-based Resolved 2023-07-01 → 2023-09-30
MCL Health-based Resolved 2023-07-01 → 2023-09-30
MCL Health-based Resolved 2023-07-01 → 2023-09-30

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
Bromodichloromethane
12 µg/L
No EPA limit set
worst single sample: 13 µg/L
38/38 SYR4 2012–2019
Chloroform
85.35 µg/L
No EPA limit set
worst single sample: 94 µg/L
38/38 SYR4 2012–2019
TTHM
97.2 µg/L 122%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 106 µg/L
38/38 SYR4 2012–2019
Dibromochloromethane
2.32 µg/L
No EPA limit set
worst single sample: 2.5 µg/L
37/38 SYR4 2012–2019
Dichloroacetic Acid
35.5 µg/L
No EPA limit set
worst single sample: 42 µg/L
31/31 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
84.5 µg/L 141%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 109 µg/L
31/31 SYR4 2012–2019
Trichloroacetic Acid
41.5 µg/L
No EPA limit set
worst single sample: 66 µg/L
31/31 SYR4 2012–2019
Monochloroacetic Acid
7.125 µg/L
No EPA limit set
worst single sample: 11 µg/L
26/31 SYR4 2012–2019
Dibromoacetic Acid
0.6710 µg/L
No EPA limit set
worst single sample: 0.8800 µg/L
20/31 SYR4 2012–2019
Copper
114.5 µg/L 8.8%
of the EPA limit 1300 µg/L
worst single sample: 398 µg/L
19/20 SYR4 2014–2017
Nitrate-Nitrite
340 µg/L 3.4%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2023
Lead
3 µg/L 20%
of the EPA limit 15 µg/L
 8/20 SYR4 2014–2017
Monobromoacetic Acid
0.8770 µg/L
No EPA limit set
worst single sample: 0.8800 µg/L
4/31 SYR4 2012–2019
Combined Uranium
1 µg/L 3.3%
of the EPA limit 30 µg/L
 1/1 SYR4 2015
Gross Alpha, Excl. Radon And U
2.9 pCi/L 19%
of the EPA limit 15 pCi/L
 1/1 SYR4 2015
47 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBromoformChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
GOLLEHON, GARY
Phone
406-627-2419

Frequently asked questions about Tiber County Water District

Is Tiber County Water District tap water safe to drink?

EPA monitoring detected 16 contaminants in Tiber County Water District'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 Tiber County Water District's water?

EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Tiber County Water District serve?

Tiber County Water District reports serving 750 people in Montana, per its EPA record.

Has Tiber County Water District had any water quality violations?

The EPA has 547 violations on file for Tiber County Water District, of which 66 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.