Community Water System · PWS IL1170850
Sawyerville
Operator location Sawyerville, Illinois - 24% of 106 violations are health-based (upper-third health share (> 23%)); surface water source; 578 served per SDWIS.
- 578
- People served (this PWS)
- 106
- EPA violations (this PWS)
- 25
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Sawyerville standing, high SDWIS violation third
24% of 106 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 24% is upper-third health share (> 23%). Population rank #26,906 of 29,740 among systems serving 500+.
The verdict
Sawyerville sits in the upper third of the sitemap cohort by violation count (106), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (578; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 24% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #26,906 of 29,740
- Population · /systems
- #1,199 of 1,310
- Population · IL
- 106
- Total EPA violations on record
- 24%
- 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
- 235
- County
- Macoupin
- School/Daycare
- No
- MCL Violations
- 22
- Monitoring Violations
- 68
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 53 | 2004 |
| Atrazine | MCL | 22 | 1997 |
| Lead and Copper Rule | MR | 7 | 1997 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2025 |
| TTHM | MR | 4 | 2025 |
| Consumer Confidence Rule | Other | 3 | 2025 |
| LEAD AND COPPER RULE REVISIONS | TT | 3 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2025 |
Violation Count vs. the National Corpus
Sawyerville has 106 recorded EPA violations, 74% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 25% carry more. 24% of this system's own violations are health-based (25 of 106), and it ranks #26,906 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)
106 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 Sawyerville
25 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for IL1170850.
Sources: EPA SDWIS · Illinois EPA, Bureau of Water
Nationwide peers
106 violations · 578 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 with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Sawyerville
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.