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Non-Transient Non-Community Water System · PWS IL3001131

Ringwood Primary Center

Operator location McHenry, Illinois - smaller served population (≤ 999) at 170 people served; 270 SDWIS violations on record from groundwater sources.

170
People served (this PWS)
270
EPA violations (this PWS)
2
Health-based (this PWS)
Untested
UCMR5 (this PWS)
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Ringwood Primary Center standing, high SDWIS violation third

170 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 1% is middle-third health share (≤ 23%).

The verdict

Ringwood Primary Center sits in the upper third of the sitemap cohort by violation count (270), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (170; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 1% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.

270
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
170
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
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
McHenry
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
268
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 7 2024
Xylenes, Total MR 5 2013
p-Dichlorobenzene MR 5 2013
1,1,1-Trichloroethane MR 5 2013
1,2-Dichloropropane MR 5 2013
1,1,2-Trichloroethane MR 5 2013
Tetrachloroethylene MR 5 2013
CHLOROBENZENE MR 5 2013
Benzene MR 5 2013
Toluene MR 5 2013
Ethylbenzene MR 5 2013
Styrene MR 5 2013
BHC-GAMMA MR 5 2011
Toxaphene MR 5 2011
Diquat MR 5 2011
Endothall MR 5 2011
Picloram MR 5 2011
Carbofuran MR 5 2011
Atrazine MR 5 2011
2,4-D MR 5 2011
ETHYLENE DIBROMIDE MR 5 2011
Chlordane MR 5 2011
Barium MR 5 2011
Cadmium MR 5 2011
Chromium MR 5 2011
Mercury MR 5 2011
Antimony, Total MR 5 2011
Beryllium, Total MR 5 2011
Thallium, Total MR 5 2011
Selenium MR 5 2011

Violation Count vs. the National Corpus

Ringwood Primary Center has 270 recorded EPA violations, 89% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 11% carry more. 1% of this system's own violations are health-based (2 of 270), 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)

270 Higher than most more violations than 89% 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 Ringwood Primary Center

EPA SDWIS lists 170 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

270 violations · 170 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.

4 peers

What to do with Ringwood Primary Center

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.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater