Community Water System · PWS IL0977320
Wadsworth Oaks Subdivision
Operator location Wadsworth, Illinois - 63% of 75 violations are health-based (upper-third health share (> 23%)); groundwater source; 185 served per SDWIS.
- 185
- People served (this PWS)
- 75
- EPA violations (this PWS)
- 47
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Wadsworth Oaks Subdivision standing, high SDWIS violation third
63% of 75 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 63% is upper-third health share (> 23%).
The verdict
Wadsworth Oaks Subdivision sits in the upper third of the sitemap cohort by violation count (75), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (185; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 63% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 75
- Total EPA violations on record
- 63%
- Health-based (MCL / treatment failure)
- 185
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
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
- 63
- County
- Lake
- School/Daycare
- No
- MCL Violations
- 47
- Monitoring Violations
- 18
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Radium (-226 and -228) | MCL | 39 | 1994 |
| Gross Alpha, Excl. Radon and U | MCL | 8 | 1992 |
| Consumer Confidence Rule | Other | 6 | 2024 |
| Glyphosate | MR | 4 | 2014 |
| Endothall | MR | 4 | 2014 |
| Nitrite | MR | 4 | 2014 |
| Diquat | MR | 4 | 2014 |
| Combined Radium (-226 and -228) | MR | 1 | 1999 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1999 |
Violation Count vs. the National Corpus
Wadsworth Oaks Subdivision has 75 recorded EPA violations, 67% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 33% carry more. 63% of this system's own violations are health-based (47 of 75), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
75 Around the middle fewer violations than 33% 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 Wadsworth Oaks Subdivision
47 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for IL0977320.
Sources: EPA SDWIS · Illinois EPA, Bureau of Water
Nationwide peers
75 violations · 185 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.
What to do with Wadsworth Oaks Subdivision
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Illinois compares on the same EPA violation measures. Illinois 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.