Community Water System · PWS IL1550050
Granville
Operator location Granville, Illinois - 53% of 392 violations are health-based (upper-third health share (> 23%)); groundwater source; 1,359 served per SDWIS.
- 1,359
- People served (this PWS)
- 392
- EPA violations (this PWS)
- 208
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Granville standing, high SDWIS violation third
53% of 392 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 53% is upper-third health share (> 23%). Population rank #16,810 of 29,740 among systems serving 500+.
The verdict
Granville sits in the upper third of the sitemap cohort by violation count (392), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,359 (mid served population (≤ 3,309)). Health-based share is 53% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #16,810 of 29,740
- Population · /systems
- #740 of 1,310
- Population · IL
- 392
- Total EPA violations on record
- 53%
- 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
- 653
- County
- Putnam
- School/Daycare
- No
- MCL Violations
- 208
- Monitoring Violations
- 142
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Radium (-226 and -228) | MCL | 149 | 2005 |
| Gross Alpha, Excl. Radon and U | MCL | 57 | 2005 |
| Coliform (TCR) | MR | 11 | 1996 |
| BHC-GAMMA | MR | 4 | 2020 |
| Diquat | MR | 4 | 2020 |
| Endothall | MR | 4 | 2020 |
| Di(2-ethylhexyl) adipate | MR | 4 | 2020 |
| OXAMYL | MR | 4 | 2020 |
| Simazine | MR | 4 | 2020 |
| Picloram | MR | 4 | 2020 |
| Dinoseb | MR | 4 | 2020 |
| Hexachlorocyclopentadiene | MR | 4 | 2020 |
| Aldicarb sulfoxide | MR | 4 | 2020 |
| Atrazine | MR | 4 | 2020 |
| LASSO | MR | 4 | 2020 |
| Heptachlor | MR | 4 | 2020 |
| 2,4,5-TP | MR | 4 | 2020 |
| HEXACHLOROBENZENE | MR | 4 | 2020 |
| Benzo(a)pyrene | MR | 4 | 2020 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 4 | 2020 |
| ETHYLENE DIBROMIDE | MR | 4 | 2020 |
| Toxaphene | MR | 4 | 2020 |
| Carbofuran | MR | 4 | 2020 |
| Aldicarb sulfone | MR | 4 | 2020 |
| 2,4-D | MR | 4 | 2020 |
| Endrin | MR | 4 | 2020 |
| Di(2-ethylhexyl) phthalate | MR | 4 | 2020 |
| Dalapon | MR | 4 | 2020 |
| Total Polychlorinated Biphenyls (PCB) | MR | 4 | 2020 |
| Methoxychlor | MR | 4 | 2020 |
Violation Count vs. the National Corpus
Granville has 392 recorded EPA violations, 93% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 6% carry more. 53% of this system's own violations are health-based (208 of 392), and it ranks #16,810 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)
392 Higher than most more violations than 93% 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 Granville
208 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for IL1550050.
Sources: EPA SDWIS · Illinois EPA, Bureau of Water
Nationwide peers
392 violations · 1,359 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 Granville
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.