Non-Transient Non-Community Water System · PWS MI2046347
Cornerstone Christian School
Operator location Brighton, Michigan - 20% of 30 violations are health-based (middle-third health share (≤ 23%)); groundwater source; 1,500 served per SDWIS.
- 1,500
- People served (this PWS)
- 30
- EPA violations (this PWS)
- 6
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Cornerstone Christian School standing, mid SDWIS violation third
20% of 30 recorded violations are health-based - middle-third health share (≤ 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 20% is middle-third health share (≤ 23%). Population rank #15,940 of 29,740 among systems serving 500+.
The verdict
Cornerstone Christian School lands in the middle third by violation volume (30), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is mid-pack at 1,500 (mid served population (≤ 3,309)). Health-based share is 20% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #15,940 of 29,740
- Population · /systems
- #493 of 1,375
- Population · MI
- 30
- Total EPA violations on record
- 20%
- 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
- 2
- County
- Livingston
- School/Daycare
- Yes
- MCL Violations
- 6
- Monitoring Violations
- 24
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 8 | 2008 |
| Arsenic | MR | 6 | 2005 |
| Nitrate | MR | 5 | 1999 |
| Coliform (TCR) | MR | 5 | 2005 |
| Arsenic | MCL | 4 | 2009 |
| Coliform (TCR) | MCL | 2 | 1991 |
Violation Count vs. the National Corpus
Cornerstone Christian School has 30 recorded EPA violations, 42% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 57% carry more. 20% of this system's own violations are health-based (6 of 30), and it ranks #15,940 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)
30 Lower than most fewer violations than 57% 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 Cornerstone Christian School
6 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for MI2046347.
Sources: EPA SDWIS · Michigan EGLE, Drinking Water and Environmental Health Division
Nationwide peers
30 violations · 1,500 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 Cornerstone Christian School
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Michigan compares on the same EPA violation measures. Michigan 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.