Transient Non-Community Water System · PWS VA6059523
Great Falls Park
Operator location McClean, Virginia - 12% of 59 violations are health-based (middle-third health share (≤ 23%)); groundwater source; 2,000 served per SDWIS.
- 2,000
- People served (this PWS)
- 59
- EPA violations (this PWS)
- 7
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Great Falls Park standing, mid SDWIS violation third
12% of 59 recorded violations are health-based - middle-third health share (≤ 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 12% is middle-third health share (≤ 23%). Population rank #13,685 of 29,740 among systems serving 500+.
The verdict
Great Falls Park lands in the middle third by violation volume (59), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is mid-pack at 2,000 (mid served population (≤ 3,309)). Health-based share is 12% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #13,685 of 29,740
- Population · /systems
- #231 of 570
- Population · VA
- 59
- Total EPA violations on record
- 12%
- 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
- Transient Non-Community
- Owner Type
- Federal
- Connections
- 3
- County
- Fairfax
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 47
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 22 | 2024 |
| Coliform (TCR) | MR | 17 | 2016 |
| Coliform (TCR) | MCL | 7 | 2015 |
| Public Notice | Other | 4 | 2024 |
| E. COLI | MR | 3 | 2015 |
| Nitrate | MR | 3 | 1999 |
| Combined Radium (-226 and -228) | MR | 1 | 1977 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1977 |
Violation Count vs. the National Corpus
Great Falls Park has 59 recorded EPA violations, 61% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 39% carry more. 12% of this system's own violations are health-based (7 of 59), and it ranks #13,685 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)
59 Around the middle fewer violations than 39% 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 Great Falls Park
7 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for VA6059523.
Sources: EPA SDWIS · Virginia Department of Health, Office of Drinking Water
Nationwide peers
59 violations · 2,000 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 Great Falls Park
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Virginia compares on the same EPA violation measures. Virginia 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.