Community Water System · PWS DE0000654
Selbyville Water Department
Operator location Selbyville, Delaware - 88% of 26 violations are health-based (upper-third health share (> 23%)); groundwater source; 3,502 served per SDWIS.
- 3,502
- People served (this PWS)
- 26
- EPA violations (this PWS)
- 23
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Selbyville Water Department standing, mid SDWIS violation third
88% of 26 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 88% is upper-third health share (> 23%). Population rank #9,603 of 29,740 among systems serving 500+.
The verdict
Selbyville Water Department lands in the middle third by violation volume (26), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is large (3,502; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 88% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #9,603 of 29,740
- Population · /systems
- #35 of 117
- Population · DE
- 26
- Total EPA violations on record
- 88%
- 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
- 2,321
- County
- Sussex
- School/Daycare
- No
- MCL Violations
- 23
- Monitoring Violations
- 0
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 23 | 2020 |
| Consumer Confidence Rule | Other | 1 | 2001 |
Violation Count vs. the National Corpus
Selbyville Water Department has 26 recorded EPA violations, 38% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 61% carry more. 88% of this system's own violations are health-based (23 of 26), and it ranks #9,603 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)
26 Lower than most fewer violations than 61% 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 Selbyville Water Department
23 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for DE0000654.
Sources: EPA SDWIS
Nationwide peers
26 violations · 3,502 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 with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Selbyville Water Department
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Delaware compares on the same EPA violation measures. Delaware 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.