Community Water System · PWS SD4600265
Carriage Hills
Operator location Rapid City, South Dakota - smaller served population (≤ 999) at 267 people served; 10 SDWIS violations on record from groundwater sources.
- 267
- People served (this PWS)
- 10
- EPA violations (this PWS)
- 2
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Carriage Hills standing, low SDWIS violation third
267 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 20% is middle-third health share (≤ 23%).
The verdict
Carriage Hills is in the lower third by violation count (10; 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 smaller (267; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 20% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 10
- Total EPA violations on record
- 20%
- Health-based (MCL / treatment failure)
- 267
- 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
- Private
- Connections
- 108
- County
- Pennington
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 7
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 5 | 2000 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 2 | 2015 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
Violation Count vs. the National Corpus
Carriage Hills has 10 recorded EPA violations, 18% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 81% carry more. 20% of this system's own violations are health-based (2 of 10), 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)
10 Among the lowest violation counts fewer violations than 81% 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
Population served record for Carriage Hills
EPA SDWIS lists 267 people served and 108 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
10 violations · 267 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.
- Eastern Shawnee EPA Region 6 — Tribal Water Systems 10violations
- Acoma Sky City Cultural Center EPA Region 6 — Tribal Water Systems 10violations
- New Town, City Of EPA Region 8 — Tribal Water Systems 10violations
- Running Creek Casino Water System (Habematolel) EPA Region 9 — Tribal Water Systems 10violations
What to do with Carriage Hills
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.