Water Quality in SWEET GRASS, MT (59484)
EPA violation data for public water systems serving ZIP code 59484.
35
Total Violations
2
Health-Based
33
Monitoring / Reporting
33
Resolved
What does this mean?
33 of 35 violations have been resolved. 2 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 33 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 (35 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| TTHM | Health-Based | N/A | 0.083 | Jun 30, 2025 | Resolved | N/A |
| TTHM | Health-Based | N/A | 0.083 | Jun 30, 2025 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2024 | Active | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2024 | Active | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| TTHM | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(2)
TTHM
02
TTHM
02
2024(2)
Lead and Copper Rule
52
Lead and Copper Rule
52
How Does This Compare?
SWEET GRASS (59484) has 35 recorded violations, including 2 health-based. 2 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.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
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
Always look for filters certified by NSF International for the specific contaminants you want to remove.