Community Water System · PWS HI0000163
Kaupulehu
Operator location Kailua-Kona, Hawaii - 50% of 42 violations are health-based (upper-third health share (> 23%)); groundwater source; 1,945 served per SDWIS.
- 1,945
- People served (this PWS)
- 42
- EPA violations (this PWS)
- 21
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Kaupulehu standing, mid SDWIS violation third
50% of 42 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%). Population rank #13,878 of 29,740 among systems serving 500+.
The verdict
Kaupulehu lands in the middle third by violation volume (42), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is mid-pack at 1,945 (mid served population (≤ 3,309)). 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.
- #13,878 of 29,740
- Population · /systems
- #53 of 81
- Population · HI
- 42
- Total EPA violations on record
- 50%
- 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
- Private
- Connections
- 452
- County
- Hawaii
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 0
- Treatment Tech Violations
- 21
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Groundwater Rule | Other | 21 | 2011 |
| Groundwater Rule | TT | 21 | 2011 |
Violation Count vs. the National Corpus
Kaupulehu has 42 recorded EPA violations, 52% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 48% carry more. 50% of this system's own violations are health-based (21 of 42), and it ranks #13,878 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)
42 Around the middle fewer violations than 48% 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 Kaupulehu
21 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for HI0000163.
Sources: EPA SDWIS
Nationwide peers
42 violations · 1,945 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
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 Kaupulehu
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Hawaii compares on the same EPA violation measures. Hawaii 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.