Non-Transient Non-Community Water System · PWS IL3064451
Snap on Tools
Operator location Crystal Lake, Illinois - smaller served population (≤ 999) at 700 people served; 35 SDWIS violations on record from groundwater sources.
- 700
- People served (this PWS)
- 35
- EPA violations (this PWS)
- 5
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Snap on Tools standing, mid SDWIS violation third
700 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 14% is middle-third health share (≤ 23%). Population rank #24,287 of 29,740 among systems serving 500+.
The verdict
Snap on Tools lands in the middle third by violation volume (35), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (700; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 14% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #24,287 of 29,740
- Population · /systems
- #1,091 of 1,310
- Population · IL
- 35
- Total EPA violations on record
- 14%
- 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
- Private
- Connections
- 1
- County
- McHenry
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 26
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | RPT | 4 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 4 | 2024 |
| Lead and Copper Rule | MR | 3 | 2018 |
| BHC-GAMMA | MR | 1 | 2005 |
| Toxaphene | MR | 1 | 2005 |
| Diquat | MR | 1 | 2005 |
| Endothall | MR | 1 | 2005 |
| Glyphosate | MR | 1 | 2005 |
| OXAMYL | MR | 1 | 2005 |
| Picloram | MR | 1 | 2005 |
| Carbofuran | MR | 1 | 2005 |
| Atrazine | MR | 1 | 2005 |
| LASSO | MR | 1 | 2005 |
| Heptachlor epoxide | MR | 1 | 2005 |
| 2,4-D | MR | 1 | 2005 |
| 2,4,5-TP | MR | 1 | 2005 |
| Pentachlorophenol | MR | 1 | 2005 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 2005 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | 2005 |
| Chlordane | MR | 1 | 2005 |
| Coliform (TCR) | MCL | 1 | 2006 |
| ETHYLENE DIBROMIDE | MR | 1 | 2005 |
| Methoxychlor | MR | 1 | 2005 |
| Coliform (TCR) | MR | 1 | 1994 |
| Heptachlor | MR | 1 | 2005 |
| Simazine | MR | 1 | 2005 |
| Revised Total Coliform Rule | MON | 1 | 2016 |
Violation Count vs. the National Corpus
Snap on Tools has 35 recorded EPA violations, 46% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 53% carry more. 14% of this system's own violations are health-based (5 of 35), and it ranks #24,287 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)
35 Lower than most fewer violations than 53% 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
Population served record for Snap on Tools
EPA SDWIS lists 700 people served and 1 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Illinois EPA, Bureau of Water
Nationwide peers
35 violations · 700 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 with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Snap on Tools
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.