Water Quality in CHESTER, MT (59522)
EPA violation data for public water systems serving ZIP code 59522.
113
Total Violations
15
Health-Based
98
Monitoring / Reporting
110
Resolved
What does this mean?
110 of 113 violations have been resolved. 15 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 98 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 (113 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2025 | Active | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2025 | Active | N/A |
| Consumer Confidence Rule | Monitoring | N/A | N/A | Sep 30, 2025 | Active | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| 2,4-D | Monitoring | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Chlordane | Monitoring | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Picloram | Monitoring | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Benzo(a)pyrene | Monitoring | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(84)
Lead and Copper Rule
52
Lead and Copper Rule
52
Consumer Confidence Rule
72
Lead and Copper Rule
51
Lead and Copper Rule
51
Lead and Copper Rule
51
2,4-D
03
Chlordane
03
Picloram
03
Benzo(a)pyrene
03
Benzo(a)pyrene
03
Benzo(a)pyrene
03
Atrazine
03
Atrazine
03
Atrazine
03
Di(2-ethylhexyl) adipate
03
Pentachlorophenol
03
Pentachlorophenol
03
OXAMYL
03
OXAMYL
03
OXAMYL
03
Simazine
03
Simazine
03
Simazine
03
Di(2-ethylhexyl) phthalate
03
Picloram
03
Di(2-ethylhexyl) phthalate
03
Dinoseb
03
Dinoseb
03
Dinoseb
03
Carbofuran
03
Carbofuran
03
Carbofuran
03
LASSO
03
LASSO
03
LASSO
03
Heptachlor
03
Heptachlor
03
Heptachlor
03
Heptachlor epoxide
03
Heptachlor epoxide
03
Heptachlor epoxide
03
Picloram
03
2,4-D
03
2,4-D
03
2,4,5-TP
03
2,4,5-TP
03
2,4,5-TP
03
HEXACHLOROBENZENE
03
HEXACHLOROBENZENE
03
HEXACHLOROBENZENE
03
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Endrin
03
Endrin
03
Endrin
03
Methoxychlor
03
Methoxychlor
03
Methoxychlor
03
Dalapon
03
Dalapon
03
Dalapon
03
Pentachlorophenol
03
Di(2-ethylhexyl) adipate
03
Di(2-ethylhexyl) adipate
03
BHC-GAMMA
03
BHC-GAMMA
03
BHC-GAMMA
03
Toxaphene
03
Toxaphene
03
Toxaphene
03
Hexachlorocyclopentadiene
03
Hexachlorocyclopentadiene
03
Hexachlorocyclopentadiene
03
Chlordane
03
Chlordane
03
Di(2-ethylhexyl) phthalate
03
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
2024(9)
Total Haloacetic Acids (HAA5)
02
Total Haloacetic Acids (HAA5)
02
Total Haloacetic Acids (HAA5)
02
Lead and Copper Rule
66
Lead and Copper Rule
66
Total Haloacetic Acids (HAA5)
02
Total Haloacetic Acids (HAA5)
02
Consumer Confidence Rule
71
Consumer Confidence Rule
71
How Does This Compare?
CHESTER (59522) has 113 recorded violations, including 15 health-based. 3 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
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.