Tiber County Water District
EPA ID: MT0000400 · 750 people served · 3 ZIP codes
ZipCheckup's reading of EPA SDWIS for Tiber County Water District (MT0000400): 3 past health-based violations, since resolved. Since the flagged events, Tiber County Water District resolved all 28 violations - compliant today, 750 residents served.
Data: EPA SDWIS
Service Area Map
Coverage area for Tiber County Water District Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Tiber County Water District serves a community with a median household income of $68,024 and an estimated 5,908 residents across its service area. Approximately 86% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 50% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. 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
Detected Contaminants
How Tiber County Water District compares to EPA limits
What This Means For You
PFOA at 1 mg/L exceeds the EPA maximum of 0.000004 mg/L.
PFNA at 1 mg/L exceeds the EPA maximum of 0.00001 mg/L.
Chlorodibromomethane at 1 mg/L exceeds the EPA maximum of 0.002 mg/L. Liver cancer, brain cancer (known carcinogen). Consider granular activated carbon (GAC) filtration.
Arsenic at 2 mg/L exceeds the EPA maximum of 0.01 mg/L.
Bromate at 1 mg/L exceeds the EPA maximum of 0.01 mg/L.
Chlorodibromomethane was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →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 | Arsenic | Non-health-based | Resolved |
| January 1, 2024 | PFOA | Non-health-based | Resolved |
| January 1, 2024 | PFNA | Non-health-based | Resolved |
| January 1, 2024 | Monochloroacetic Acid | Non-health-based | Resolved |
| January 1, 2024 | Dichloroacetic Acid | Non-health-based | Resolved |
| January 1, 2024 | Bromodichloromethane | Non-health-based | Resolved |
| January 1, 2024 | Dibromochloromethane | Non-health-based | Resolved |
| January 1, 2024 | Bromoform | Non-health-based | Resolved |
| January 1, 2024 | Chlorodibromomethane | Non-health-based | Resolved |
| January 1, 2024 | Trichloroacetic Acid | Non-health-based | Resolved |
| January 1, 2024 | Monobromoacetic Acid | Non-health-based | Resolved |
| January 1, 2024 | Dibromoacetic Acid | Non-health-based | Resolved |
| January 1, 2024 | Bromochloroacetic Acid | Non-health-based | Resolved |
| January 1, 2024 | Bromodichloroacetic Acid | Non-health-based | Resolved |
| January 1, 2024 | Chlorodibromoacetic Acid | Non-health-based | Resolved |
| January 1, 2024 | Tribromoacetic Acid | Non-health-based | Resolved |
| January 1, 2024 | HAA6Br | Non-health-based | Resolved |
| January 1, 2024 | HAA9 | Non-health-based | Resolved |
| January 1, 2024 | Bromate | Non-health-based | Resolved |
| January 1, 2024 | Chlorate | 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 |
| Arsenic | Inorganic | 2 | No |
| Barium | Inorganic | 1 | No |
| PFOA | PFAS | 1 | No |
| PFNA | PFAS | 1 | No |
| Monochloroacetic Acid | Disinfection Byproducts | 1 | No |
| Dichloroacetic Acid | Disinfection Byproducts | 1 | No |
| Bromodichloromethane | Disinfection Byproducts | 1 | No |
| Dibromochloromethane | Disinfection Byproducts | 1 | No |
| Bromoform | Disinfection Byproducts | 1 | No |
| Chlorodibromomethane | Disinfection Byproducts | 1 | No |
| Trichloroacetic Acid | Disinfection Byproducts | 1 | No |
| Monobromoacetic Acid | Disinfection Byproducts | 1 | No |
| Dibromoacetic Acid | Disinfection Byproducts | 1 | No |
| Bromochloroacetic Acid | Disinfection Byproducts | 1 | No |
Health Risk Details
Total Trihalomethanes (TTHM) (EPA limit: 0.08 mg/L)
Bladder & rectal cancer risk; reproductive concerns At-risk groups: pregnant women, long-term consumers of chlorinated water, people who frequently shower in chlorinated water.
Removal methods: 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 | N/A |
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
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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 the full compliance record 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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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.