Water Quality in BLACK HAWK, SD (57718)
EPA violation data for public water systems serving ZIP code 57718.
84
Total Violations
27
Health-Based
57
Monitoring / Reporting
83
Resolved
What does this mean?
83 of 84 violations have been resolved. 27 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 57 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 (84 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Active | N/A |
| Gross Alpha, Excl. Radon and U | Health-Based | N/A | 18 | Mar 31, 2025 | Resolved | N/A |
| Gross Alpha, Excl. Radon and U | Health-Based | N/A | 18 | Mar 31, 2025 | Resolved | N/A |
| Gross Alpha, Excl. Radon and U | Health-Based | N/A | 18 | Mar 31, 2025 | Resolved | N/A |
| Gross Alpha, Excl. Radon and U | Health-Based | N/A | 17 | Dec 31, 2024 | Resolved | N/A |
| Gross Alpha, Excl. Radon and U | Health-Based | N/A | 17 | Dec 31, 2024 | Resolved | N/A |
| Gross Alpha, Excl. Radon and U | Health-Based | N/A | 17 | Dec 31, 2024 | Resolved | N/A |
| LEAD AND COPPER RULE REVISIONS | Monitoring | N/A | N/A | Oct 16, 2024 | Resolved | N/A |
| LEAD AND COPPER RULE REVISIONS | Monitoring | N/A | N/A | Oct 16, 2024 | Resolved | N/A |
| LEAD AND COPPER RULE REVISIONS | Health-Based | N/A | N/A | Oct 16, 2024 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(4)
Consumer Confidence Rule
71
Gross Alpha, Excl. Radon and U
02
Gross Alpha, Excl. Radon and U
02
Gross Alpha, Excl. Radon and U
02
2024(36)
Gross Alpha, Excl. Radon and U
02
Gross Alpha, Excl. Radon and U
02
Gross Alpha, Excl. Radon and U
02
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
2E
Chlorine
27
Chlorine
27
Gross Alpha, Excl. Radon and U
02
Gross Alpha, Excl. Radon and U
02
Gross Alpha, Excl. Radon and U
02
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
4C
Revised Total Coliform Rule
4C
Revised Total Coliform Rule
4C
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
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Groundwater Rule
45
Groundwater Rule
45
Groundwater Rule
45
How Does This Compare?
BLACK HAWK (57718) has 84 recorded violations, including 27 health-based. 1 remains 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.