Public water system record
Tiber County Water District
Serves an area of Pondera County and Chouteau County, MT that includes Conrad and Twin Hills Colony · 750 people served
Federal records show 11 health-based violations and 30 monitoring/reporting issues for Tiber County Water District in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.
System profile
- Health-based violations, last 10 years
- 11
- Resolved
- 11
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 30
Key facts
- Tiber County Water District draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 86 µg/L, federal limit 60 µg/L (1.4 times the limit), 2020.
- Most recent formal enforcement: compliance order (no penalty) by Montana, May 2020.
- Record on file since 1993, with 8 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 362 service lines.
Check whether Tiber County Water District serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Oct 1, 2023 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.065 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Jul 1, 2023 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 71 µg/L, federal limit 60 µg/L (1.2 times the limit)
|
220 | Jan 1, 2021 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 78 µg/L, federal limit 60 µg/L (1.3 times the limit)
|
220 | Oct 1, 2020 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 60 µg/L (1.4 times the limit)
|
220 | Jul 1, 2020 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 78 µg/L, federal limit 60 µg/L (1.3 times the limit)
|
220 | Apr 1, 2020 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 86 µg/L, federal limit 60 µg/L (1.4 times the limit)
|
220 | Jan 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 83 µg/L, federal limit 80 µg/L (at or just above the limit)
|
220 | Jan 1, 2020 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 76 µg/L, federal limit 60 µg/L (1.3 times the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 70 µg/L, federal limit 60 µg/L (1.2 times the limit)
|
220 | Jul 1, 2019 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 62 µg/L, federal limit 60 µg/L (at or just above the limit)
|
220 | Apr 1, 2019 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Arsenic
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2013 | Resolved |
Full record since 1993
EPA's records for Tiber County Water District go back to 1993. Before October 19, 2016 they list 8 health-based violations (8 resolved) and 143 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 7 | 14 |
| 2000s | 1 | 63 |
| 2010 to October 18, 2016 | 0 | 66 |
| October 19, 2016 to 2019 | 3 | 4 |
| 2020s | 8 | 25 |
Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began May 2006, Resolved.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
May 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1995 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1993 | Resolved |
Enforcement actions
Montana regulators took 1 formal enforcement action against Tiber County Water District in 2020, filed as 7 records in EPA's data. The most recent was a compliance order (no penalty) in May 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 5, 2020 | Montana | Compliance order (no penalty) | 11 violations (11 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
What the violations mean
Haloacetic Acids (HAA5)
10 incidentsHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Total Trihalomethanes (TTHMs)
1 incidentDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Tiber County Water District draws water from 1 surface water intake. 3 other community water systems buy water from Tiber County Water District.
Community systems that buy water from it
- Camrose Colony Ledger, MT
- Ncmrwa Tiber Service Area Helena, MT
- Twin Hills Colony Inc Carter, MT
Annual water quality report
Tiber County Water District must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Montana.
Certified drinking water labs by state EPA guidance for private wells