Water Quality in DARBY, MT (59829)
EPA violation data for public water systems serving ZIP code 59829.
22
Total Violations
2
Health-Based
20
Monitoring / Reporting
20
Resolved
What does this mean?
20 of 22 violations have been resolved. 2 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 20 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 (22 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Lead and Copper Rule | Monitoring | N/A | N/A | Dec 29, 2024 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Dec 29, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Nov 30, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Nov 30, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Nov 30, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Nov 30, 2024 | Resolved | N/A |
| Lead and Copper Rule | Health-Based | N/A | N/A | Aug 5, 2024 | Active | N/A |
| Lead and Copper Rule | Health-Based | N/A | N/A | Aug 5, 2024 | Active | N/A |
| Nitrate-Nitrite | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Nitrate-Nitrite | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2024(8)
Lead and Copper Rule
66
Lead and Copper Rule
66
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Lead and Copper Rule
58
Lead and Copper Rule
58
2023(8)
Nitrate-Nitrite
03
Nitrate-Nitrite
03
Nitrate-Nitrite
03
Consumer Confidence Rule
71
Consumer Confidence Rule
71
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
How Does This Compare?
DARBY (59829) has 22 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
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.