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WaterSafeCheck

ZIP Code 60436 Water Quality Report

Joliet, IL · Will County County

Safety Score
D

Water Safety Grade

Poor — Multiple violations recorded

Health Violations

7

Total Violations

51

Lead Risk

Very High

Contaminants

3

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Active Water Quality Issues Detected

EPA records show 28 unresolved violations. Contact Joliet for current status.

About Tap Water in ZIP Code 60436

Tap water in ZIP code 60436 (Joliet, IL) has received a D grade (score: 49/100) — below average for the nation. Joliet has recorded notable violations with EPA Safe Drinking Water Act regulations. Residents may want to consider additional filtration and review their annual Consumer Confidence Report.

Water System

Joliet

EPA ID: IL1970450

Water Source

Ground Water

Population Served

160,000 residents

County

Will County County, Illinois

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Lead Levels in ZIP 60436

EPA action level: 15 ppb | Public health goal: 0 ppb

Lead Level: 7.0 ppb — Below Action Level

The 90th percentile lead level in 60436 is 7.0 ppb, below the EPA action level of 15 ppb but above what many health experts consider ideal. The CDC and EPA both affirm there is no safe level of lead exposure for children. Families with young children or pregnant women should consider a certified NSF/ANSI 53 water filter, and request lead testing of their home's tap water.

Lead exposure risk in 60436 is rated Very High. EPA models estimate a 71% probability of lead exposure risk in this ZIP code based on housing age, infrastructure age, and water system data. This is among the highest risk categories nationally, often associated with heavily aging infrastructure and pre-1986 construction. Do not give unfiltered tap water to children under 6 or pregnant women. Consider getting your home's plumbing tested for lead solder and fixtures.

Lead Level (90th percentile)
7.00 ppb (0.007 mg/L)
Copper Level (90th percentile)

EPA action level: 1.3 mg/L

1.79 mg/L
Lead (Consumer Confidence Report)

From annual CCR filing

7.8 ppb
Copper (Consumer Confidence Report)

From annual CCR filing

0.9 ppb
Lead Exposure Risk Rating
Very High
Lead Exposure Probability

EPA model estimate based on housing age and infrastructure

71%
Note: Lead levels above are the 90th percentile from EPA monitoring — meaning 90% of samples were at or below this level. Even "undetected" tap water lead doesn't account for lead leaching from home plumbing. If your home was built before 1986, individual tap testing is recommended.
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Violation History

Past 5 years — EPA SDWIS data

Joliet has recorded 7 health-based violations in the past 5 years — significantly above the national average. This volume of violations indicates serious and recurring compliance issues. Independent water testing and in-home filtration are strongly recommended. 28 violations are currently unresolved — meaning the issue has not yet been formally corrected in EPA records. This is a serious concern that residents should follow up on with their water utility.

Total Violations (5 yr)
51
Health-Based Violations
7
Unresolved Violations
28
Boil Water Advisories
0
Compliance Risk
Critical

Regulatory compliance risk is rated Critical — the highest risk category. Joliet has an extensive history of unresolved violations and enforcement actions. Independent water testing is highly recommended.

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Contaminants Detected

Contaminants with health-based violations on record

EPA records identify 3 contaminants associated with health-based violations in ZIP code 60436: Stage 2 DBP Rule, Contaminant 1028, Stage 1 DBP Rule. These contaminants exceeded the Maximum Contaminant Levels (MCLs) established by the EPA under the Safe Drinking Water Act at some point in the 5-year monitoring period. The presence of these violations does not necessarily mean water is currently unsafe — water systems are often required to increase monitoring and treatment when violations occur. Review the annual Consumer Confidence Report for the most current status.

Stage 2 DBP RuleContaminant 1028Stage 1 DBP Rule

From Consumer Confidence Report:

Copper (0.901 ppm); Lead (7.77 ppb); Manganese (200 ppb); Likely Source of ContaminationCombined Radium226/228 (3 pCi/L); Gross Alpha (excluding radon and uranium) (8 pCi/L)

⚖ Enforcement Actions

10 enforcement actions have been issued against Joliet — a high number that reflects sustained compliance struggles. Enforcement actions escalate from administrative orders to financial penalties when utilities repeatedly fail to meet safe drinking water standards.
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Water Source & Environmental Factors

Ground Water

This system draws water from underground aquifers. Groundwater is naturally filtered through soil and rock, but can still contain naturally occurring minerals like arsenic, radium, or nitrates.

Water Source Type
Ground Water
CCR Source Classification
Ground Water
EPA Radon Zone

Moderate potential

Zone 2
Annual Flood Risk Cost

Estimated annual flood-related costs per property

$2
Energy Burden

% of household income spent on energy — indicator of older infrastructure

2.82%

EPA Radon Zone 2 — moderate radon potential. The EPA recommends testing your home regardless of zone designation.

🛡 What Should You Do? — ZIP 60436 Recommendations

  • 🚨 Install a certified NSF/ANSI 53 or 58 (reverse osmosis) filter immediately for drinking and cooking
  • 🚨 Do not give unfiltered water to children, pregnant women, or immunocompromised individuals
  • 🚨 Contact Joliet to request the current violation status and corrective action plan
  • 🚨 Report concerns to your state environmental agency or call the EPA hotline: 1-800-426-4791
  • 🚨 Consider having your home's tap water independently tested by a certified lab

Frequently Asked Questions — ZIP 60436 Water Quality

Is tap water safe to drink in ZIP code 60436?+
Tap water in 60436 has a below-average water quality grade of D. While it is treated, there have been notable compliance issues. We strongly recommend using a certified NSF/ANSI 53 water filter for drinking and cooking, especially for vulnerable populations.
What is the lead level in 60436 tap water?+
The 90th percentile lead level in 60436 is 7.0 ppb (parts per billion). The EPA action level is 15 ppb. This is below the action level, but some health experts recommend a lead filter for families with young children.
Who provides tap water to 60436?+
Tap water in ZIP code 60436 is provided by Joliet (EPA ID: IL1970450). This system serves approximately 160,000 residents. You can contact them directly for Consumer Confidence Reports, current advisories, and billing information.
What is the water source for 60436?+
ZIP code 60436 is served by ground water. Groundwater systems draw from underground aquifers. While naturally filtered, groundwater can still contain naturally occurring contaminants such as arsenic, radium, or nitrates at elevated levels in some regions.
Does 60436 have any active water quality violations?+
Yes — there are currently 28 unresolved violations on record for this water system. Unresolved violations indicate issues that have not yet been formally corrected in EPA tracking systems. Contact Joliet for the latest update.
How do I get a copy of my water quality report for 60436?+
Your water utility — Joliet — is required by law to send you an annual Consumer Confidence Report (CCR) by July 1 each year. You can also request it directly from the utility or find it online by searching "Joliet Consumer Confidence Report." The EPA's ECHO database also has historical compliance data.
What water filter should I use in 60436?+
The right filter depends on what contaminants are present. For lead, look for a filter certified to NSF/ANSI Standard 53. For chlorine byproducts (like THMs), NSF/ANSI 42 filters work well. For a broad range of contaminants including PFAS, look for NSF/ANSI 58 (reverse osmosis) systems. For ZIP code 60436, with detected contaminants including Stage 2 DBP Rule and Contaminant 1028, a multi-stage filter or reverse osmosis system is recommended.
Is 60436 tap water safe for babies and infants?+
Infants are especially vulnerable to lead, nitrates, and microbial contaminants in drinking water. Given the detected lead level of 7.0 ppb in 60436, we recommend using a certified NSF/ANSI 53 water filter or certified bottled water for preparing infant formula. Always consult your pediatrician for guidance specific to your child's health.

Data Sources & Methodology

Water quality data for ZIP code 60436 is compiled from the EPA Safe Drinking Water Information System (SDWIS), EPA ECHO enforcement database, UCMR5 unregulated contaminant monitoring, and Consumer Confidence Reports filed by Joliet. Safety scores are composite metrics derived from violation history, lead levels, enforcement actions, and infrastructure risk indicators. Data reflects a 5-year monitoring window. Last dataset update: 2024. View EPA source data →