Tiber County Water District
EPA ID: MT0000400 · 750 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for Tiber County Water District (MT0000400): 3 health-based violations recorded since 2021. Per the federal file, all 28 violations logged for Tiber County Water District carry a resolved status, and around 750 people get water from this system.
Data: EPA SDWIS
Service Area Map
Coverage area for Tiber County Water District Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Tiber County Water District have a median household income of $68,024 and about 5,908 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 86% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 50% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Tiber County Water District's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Montana
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Tiber County Water District (EPA ID: MT0000400) is a community water system in Montana that serves approximately 750 people from surface water sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 28 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| January 1, 2024 | Nitrate-Nitrite | Non-health-based | Resolved |
| January 1, 2024 | 1,2,4-Trichlorobenzene | Non-health-based | Resolved |
| January 1, 2024 | cis-1,2-Dichloroethylene | Non-health-based | Resolved |
| January 1, 2024 | Xylenes, Total | Non-health-based | Resolved |
| January 1, 2024 | DICHLOROMETHANE | Non-health-based | Resolved |
| January 1, 2024 | o-Dichlorobenzene | Non-health-based | Resolved |
| January 1, 2024 | p-Dichlorobenzene | Non-health-based | Resolved |
| January 1, 2024 | Vinyl chloride | Non-health-based | Resolved |
| January 1, 2024 | 1,1-Dichloroethylene | Non-health-based | Resolved |
| January 1, 2024 | trans-1,2-Dichloroethylene | Non-health-based | Resolved |
| January 1, 2024 | 1,2-Dichloroethane | Non-health-based | Resolved |
| January 1, 2024 | 1,1,1-Trichloroethane | Non-health-based | Resolved |
| January 1, 2024 | Carbon tetrachloride | Non-health-based | Resolved |
| January 1, 2024 | 1,2-Dichloropropane | Non-health-based | Resolved |
| January 1, 2024 | Trichloroethylene | Non-health-based | Resolved |
| January 1, 2024 | 1,1,2-Trichloroethane | Non-health-based | Resolved |
| January 1, 2024 | Tetrachloroethylene | Non-health-based | Resolved |
| January 1, 2024 | CHLOROBENZENE | Non-health-based | Resolved |
| January 1, 2024 | Benzene | Non-health-based | Resolved |
| January 1, 2024 | Toluene | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 3 | Yes |
| Nitrate-Nitrite | Monitoring & Reporting | 2 | No |
| Barium | Inorganic | 1 | No |
| 1,2,4-Trichlorobenzene | Monitoring & Reporting | 1 | No |
| cis-1,2-Dichloroethylene | Monitoring & Reporting | 1 | No |
| Xylenes, Total | Monitoring & Reporting | 1 | No |
| DICHLOROMETHANE | Monitoring & Reporting | 1 | No |
| o-Dichlorobenzene | Monitoring & Reporting | 1 | No |
| p-Dichlorobenzene | Monitoring & Reporting | 1 | No |
| Vinyl chloride | Monitoring & Reporting | 1 | No |
| 1,1-Dichloroethylene | Monitoring & Reporting | 1 | No |
| trans-1,2-Dichloroethylene | Monitoring & Reporting | 1 | No |
| 1,2-Dichloroethane | Monitoring & Reporting | 1 | No |
| 1,1,1-Trichloroethane | Monitoring & Reporting | 1 | No |
| Carbon tetrachloride | Monitoring & Reporting | 1 | No |
Health Risk Details
Total Trihalomethanes (TTHM) (EPA limit: 0.08 mg/L)
Long-term exposure is associated with increased cancer risk, including bladder cancer; possible reproductive effects At-risk groups: pregnant women, long-term consumers of chlorinated water.
Treatment options (verify a product is certified to reduce this contaminant): granular activated carbon (GAC), carbon block filter, point-of-entry aeration. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 mg/L | No | 2023-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
3 of 3 ZIP records with known zones are in EPA Radon Zone 1.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by MT or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Tiber County Water District (MT0000400) on EPA.gov.
Frequently Asked Questions
Is Tiber County Water District water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Tiber County Water District; its 28 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Tiber County Water District serve?
Tiber County Water District serves approximately 750 people across 3 ZIP codes in Montana.
Where does Tiber County Water District get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Tiber County Water District (MT): 3 Health Violations. https://zipcheckup.com/water-system/mt0000400/
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author = {{ZipCheckup}},
title = {{Tiber County Water District (MT): 3 Health Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/mt0000400/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Tiber County Water District (EPA ID: MT0000400) - request the latest Consumer Confidence Report or ask about specific contaminants.