Community Water System · PWS SD4600158
Highmore
Operator location Highmore, South Dakota - smaller served population (≤ 999) at 682 people served; 143 SDWIS violations on record from surface water sources.
- 682
- People served (this PWS)
- 143
- EPA violations (this PWS)
- 31
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Highmore standing, high SDWIS violation third
682 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 22% is middle-third health share (≤ 23%). Population rank #24,701 of 29,740 among systems serving 500+.
The verdict
Highmore sits in the upper third of the sitemap cohort by violation count (143), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (682; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 22% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #24,701 of 29,740
- Population · /systems
- #141 of 171
- Population · SD
- 143
- Total EPA violations on record
- 22%
- 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
- Community
- Owner Type
- Local
- Connections
- 460
- County
- Hyde
- School/Daycare
- No
- MCL Violations
- 29
- Monitoring Violations
- 72
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 34 | 2000 |
| Coliform (TCR) | MCL | 29 | 1997 |
| Coliform (TCR) | Other | 7 | 1999 |
| Lead and Copper Rule | MR | 3 | 1993 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 3 | 2010 |
| Chlorine | MR | 3 | 2022 |
| Asbestos | MR | 2 | 1993 |
| Nitrite | MR | 2 | 1993 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 2 | 2011 |
| Nitrate | MR | 2 | 1994 |
| Consumer Confidence Rule | Other | 2 | 2005 |
| cis-1,2-Dichloroethylene | MR | 1 | 1995 |
| 1,1,1-Trichloroethane | MR | 1 | 1995 |
| Tetrachloroethylene | MR | 1 | 1995 |
| Ethylbenzene | MR | 1 | 1995 |
| DICHLOROMETHANE | MR | 1 | 1995 |
| 1,2,4-Trichlorobenzene | MR | 1 | 1995 |
| 1,1,2-Trichloroethane | MR | 1 | 1995 |
| 1,1-Dichloroethylene | MR | 1 | 1995 |
| CHLOROBENZENE | MR | 1 | 1995 |
| Styrene | MR | 1 | 1995 |
| o-Dichlorobenzene | MR | 1 | 1995 |
| trans-1,2-Dichloroethylene | MR | 1 | 1995 |
| 1,2-Dichloropropane | MR | 1 | 1995 |
| Benzene | MR | 1 | 1995 |
| Trichloroethylene | MR | 1 | 1995 |
| Toluene | MR | 1 | 1995 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| 1,2-Dichloroethane | MR | 1 | 1995 |
Violation Count vs. the National Corpus
Highmore has 143 recorded EPA violations, 80% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 20% carry more. 22% of this system's own violations are health-based (31 of 143), and it ranks #24,701 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)
143 Higher than most more violations than 80% 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 Highmore
EPA SDWIS lists 682 people served and 460 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
143 violations · 682 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.
Cross-state systems with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Highmore
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.