Non-Transient Non-Community Water System · PWS NV0003006
Hoover Dam
Operator location Boulder City, Nevada - 25% of 109 violations are health-based (upper-third health share (> 23%)); surface water source; 3,000 served per SDWIS.
- 3,000
- People served (this PWS)
- 109
- EPA violations (this PWS)
- 27
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Hoover Dam standing, high SDWIS violation third
25% of 109 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 25% is upper-third health share (> 23%). Population rank #10,645 of 29,740 among systems serving 500+.
The verdict
Hoover Dam sits in the upper third of the sitemap cohort by violation count (109), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 3,000 (mid served population (≤ 3,309)). Health-based share is 25% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #10,645 of 29,740
- Population · /systems
- #66 of 155
- Population · NV
- 109
- Total EPA violations on record
- 25%
- 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
- 5
- County
- Clark
- School/Daycare
- No
- MCL Violations
- 27
- Monitoring Violations
- 19
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (Pre-TCR) | Other | 47 | 1988 |
| TTHM | MCL | 23 | 2009 |
| CARBON, TOTAL | MR | 8 | 2025 |
| Coliform (TCR) | MR | 5 | 2002 |
| Antimony, Total | MCL | 4 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2021 |
| TTHM | MR | 3 | 2021 |
Violation Count vs. the National Corpus
Hoover Dam has 109 recorded EPA violations, 75% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 25% carry more. 25% of this system's own violations are health-based (27 of 109), and it ranks #10,645 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)
109 Around the middle fewer violations than 25% 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 Hoover Dam
27 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for NV0003006.
Sources: EPA SDWIS
Nationwide peers
109 violations · 3,000 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Hoover Dam
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Nevada compares on the same EPA violation measures. Nevada 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.