Water Quality in PLAINS, MT (59859)
EPA violation data for public water systems serving ZIP code 59859.
52
Total Violations
10
Health-Based
42
Monitoring / Reporting
48
Resolved
What does this mean?
48 of 52 violations have been resolved. 10 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 42 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (52 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Groundwater Rule | Health-Based | N/A | N/A | Sep 30, 2025 | Resolved | N/A |
| Groundwater Rule | Health-Based | N/A | N/A | Sep 30, 2025 | Resolved | N/A |
| Groundwater Rule | Health-Based | N/A | N/A | Sep 30, 2025 | Resolved | N/A |
| Groundwater Rule | Monitoring | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| Groundwater Rule | Monitoring | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| Groundwater Rule | Monitoring | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(18)
Groundwater Rule
41
Groundwater Rule
41
Groundwater Rule
41
Groundwater Rule
31
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Groundwater Rule
31
Groundwater Rule
31
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Groundwater Rule
31
Groundwater Rule
31
Groundwater Rule
31
Groundwater Rule
31
Groundwater Rule
31
Groundwater Rule
31
2024(20)
TTHM
27
TTHM
27
Total Haloacetic Acids (HAA5)
27
Total Haloacetic Acids (HAA5)
27
Groundwater Rule
31
Groundwater Rule
31
Groundwater Rule
31
Groundwater Rule
41
Groundwater Rule
41
Groundwater Rule
41
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Groundwater Rule
41
Groundwater Rule
41
Groundwater Rule
41
Groundwater Rule
41
Groundwater Rule
31
Groundwater Rule
31
Groundwater Rule
31
How Does This Compare?
PLAINS (59859) has 52 recorded violations, including 10 health-based. 4 remain unresolved. Consider testing your tap water independently for added peace of mind.
Recommended Water Filters
Based on the contaminants detected in your area, these filter types may help improve your water quality.
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.