Non-Transient Non-Community Water System · PWS SD4680047
Nps-Wind Cave National Park
Operator location Hot Springs, South Dakota - lower-third violation load (≤ 21 violations) with 11 EPA violations; groundwater source; 1,404 served (PWS-level, not municipal population).
- 1,404
- People served (this PWS)
- 11
- EPA violations (this PWS)
- 1
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Nps-Wind Cave National Park standing, low SDWIS violation third
11 EPA SDWIS violations on record - lower-third violation load (≤ 21 violations). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 9% is middle-third health share (≤ 23%). Population rank #16,508 of 29,740 among systems serving 500+.
The verdict
Nps-Wind Cave National Park is in the lower third by violation count (11; lower-third violation load (≤ 21 violations)). A low count does not mean the system is unmonitored - monitoring and reporting violations still appear in SDWIS. Population served is mid-pack at 1,404 (mid served population (≤ 3,309)). Health-based share is 9% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #16,508 of 29,740
- Population · /systems
- #77 of 171
- Population · SD
- 11
- Total EPA violations on record
- 9%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Federal
- Connections
- 162
- County
- Custer
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 10
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 8 | 2005 |
| Coliform (TCR) | MR | 2 | 1992 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 1 | 2025 |
Violation Count vs. the National Corpus
Nps-Wind Cave National Park has 11 recorded EPA violations, 19% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 79% carry more. 9% of this system's own violations are health-based (1 of 11), and it ranks #16,508 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
11 Among the lowest violation counts fewer violations than 79% 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
SDWIS compliance record for Nps-Wind Cave National Park
11 violations on record for SD4680047; use EPA SDWIS to confirm return-to-compliance dates and monitoring categories.
Sources: EPA SDWIS
Nationwide peers
11 violations · 1,404 served: nearest cross-state SDWIS matches.
Cross-state systems with similarly light violation ledgers
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Nps-Wind Cave National Park
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.