Water Quality in NEW UNDERWOOD, SD (57761)
EPA violation data for public water systems serving ZIP code 57761.
12
Total Violations
2
Health-Based
10
Monitoring / Reporting
12
Resolved
What does this mean?
12 of 12 violations have been resolved. 2 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 10 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 (12 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Chlorine | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | Eye and nose irritation; stomach discomfort |
| Chlorine | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | Eye and nose irritation; stomach discomfort |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Health-Based | N/A | N/A | Nov 28, 2023 | Resolved | N/A |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Health-Based | N/A | N/A | Nov 28, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Sep 30, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Sep 30, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Sep 30, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Sep 30, 2022 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Sep 30, 2022 | Resolved | N/A |
| Chlorine | Monitoring | N/A | N/A | Sep 30, 2022 | Resolved | Eye and nose irritation; stomach discomfort |
Lead & Copper Levels
Violation Timeline
2023(7)
Chlorine
27
Chlorine
27
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
2022(5)
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Chlorine
27
Chlorine
27
Chlorine
27
How Does This Compare?
NEW UNDERWOOD (57761) has 12 recorded violations, including 2 health-based. All violations have been resolved, which is a positive sign for current water quality. 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.
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.