Cave In Rock, IL 62919

2 water systems1,071 residents

Severe water quality issues - filtration essential

F

Score: 17/100

Graded on EPA violations, contaminants, severity, compliance, and enforcement history. See methodology.

Data updated June 2026 • Sources: EPA ECHO and EPA Envirofacts

24

Contaminants Detected

442

Violations on Record

18

Health-Based Violations

0

Recent Violations

Grade Breakdown

Contaminant Count1 / 25
Violation History0 / 25
Contaminant Severity14 / 25
System Compliance0 / 15
Enforcement History0 / 10
Total Score17%

17 / 100 points

Recommended Water Filters

  • Point-of-Use Carbon Filter (NSF-certified for lead)
  • Ultraviolet (UV) Purification
  • Whole Home Carbon Filter System
Compare filter types in our Filter Guide →

Consult a water quality specialist for personalized recommendations.

Cave In Rock vs IL & National Average

Detected Contaminants

24 contaminants detected across water systems serving this ZIP code

ContaminantCategory
Lead and Copper RuleHeavy Metal
Coliform (TCR)Microorganism
1,1,1-TrichloroethaneOther
1,1,2-TrichloroethaneOther
1,2-DichloropropaneOther
Consumer Confidence RuleOther
DICHLOROMETHANEOther
Gross Alpha, Excl. Radon and URadiological
1,1-DichloroethyleneVolatile Organic
1,2-DichloroethaneVolatile Organic
1,2,4-TrichlorobenzeneVolatile Organic
BenzeneVolatile Organic
Carbon tetrachlorideVolatile Organic
CHLOROBENZENEVolatile Organic
cis-1,2-DichloroethyleneVolatile Organic
EthylbenzeneVolatile Organic
o-DichlorobenzeneVolatile Organic
p-DichlorobenzeneVolatile Organic
StyreneVolatile Organic
TetrachloroethyleneVolatile Organic
TolueneVolatile Organic
trans-1,2-DichloroethyleneVolatile Organic
TrichloroethyleneVolatile Organic
Xylenes, TotalVolatile Organic

Water System Information

Systems Serving This ZIP:
HARDIN COUNTY WATER DISTRICT NO.1, CAVE-IN-ROCK
Population Served:
1,071
Systems With Violations:
2 of 2
Major Violations:
341
Enforcement Actions:
439

Frequently Asked Questions

What does the grade mean?

Our A–F grade ranks this ZIP code's water quality against every other analyzed ZIP in the country, based on EPA data. A = among the best, F = among the most troubled.

Is my tap water safe to drink?

Water systems regulated by the EPA must comply with Safe Drinking Water Act standards. However, if you're concerned about water quality, consider a water filter appropriate for your contaminants.

How often is the data updated?

We update our data quarterly with the latest EPA ECHO and Envirofacts data. Historical violations are tracked to identify patterns.

What filters do you recommend?

Filter recommendations are based on detected contaminants in your area. See our Filter Guide for detailed information about different filter types.