Community Water System · PWS SD4602068
South Shore
Operator location South Shore, South Dakota - 50% of 117 violations are health-based (upper-third health share (> 23%)); groundwater source; 189 served per SDWIS.
- 189
- People served (this PWS)
- 117
- EPA violations (this PWS)
- 59
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
South Shore standing, high SDWIS violation third
50% of 117 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 50% is upper-third health share (> 23%).
The verdict
South Shore sits in the upper third of the sitemap cohort by violation count (117), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (189; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 50% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 117
- Total EPA violations on record
- 50%
- Health-based (MCL / treatment failure)
- 189
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 66
- County
- Codington
- School/Daycare
- No
- MCL Violations
- 47
- Monitoring Violations
- 49
- Treatment Tech Violations
- 12
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 47 | 2003 |
| Coliform (TCR) | MR | 22 | 2008 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 10 | 2019 |
| Nitrate | MR | 4 | 2013 |
| ETHYLENE DIBROMIDE | MR | 4 | 2008 |
| Diquat | MR | 4 | 2008 |
| Endothall | MR | 4 | 2008 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 4 | 2008 |
| E. COLI | MR | 4 | 2010 |
| Chlorine | MR | 3 | 2008 |
| Consumer Confidence Rule | Other | 2 | 2001 |
| Groundwater Rule | TT | 2 | 2013 |
| Public Notice | Other | 1 | 2011 |
Violation Count vs. the National Corpus
South Shore has 117 recorded EPA violations, 76% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 24% carry more. 50% of this system's own violations are health-based (59 of 117), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
117 Higher than most more violations than 76% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Health-based violations on South Shore
59 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for SD4602068.
Sources: EPA SDWIS
Nationwide peers
117 violations · 189 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
What to do with South Shore
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in South Dakota compares on the same EPA violation measures. South Dakota systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.