WaterVerge

Is Tamaroa, IL Tap Water Safe to Drink?

Graded A- — but Chlorate was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓

2K residents served 1 water system PWSID: IL1450250
Overall Score
86.5 / 100
Violations
1 active
Last Updated
May 2026
Source
Purchased surface water
#318 of 891 in Illinois Top 30% nationally
Local Government
High data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
A-GRADE
Water Quality Grade
86.5/100
waterverge.com
A- 86.5/100

Tamaroa, IL — Water Quality Report

Tamaroa's drinking water received a grade of A- (86.5 out of 100), indicating good water quality. The city's 1 water system serves approximately 2,197 residents using purchased surface water.

Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.

The system has 1 violation on record, including 0 health-based violations. 1 remains unresolved.

Data last updated: May 2026 · Source: EPA SDWIS, UCMR 5
Analysis

What to know about Tamaroa's water

Tamaroa ranks #318 out of 891 cities in Illinois for water quality, placing it mid-range in the state.

The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.

Hexavalent chromium (chromium-6) was detected at 1.10 µg/L in UCMR 3 testing. While below California's 10 µg/L limit and with no federal MCL set, residents sensitive to this contaminant may consider reverse osmosis filtration.

As a small community water system, Tamaroa may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

Quality Breakdown

Water quality score

See methodology →
86.5 out of 100 Grade A-
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
44.7/45
A
Historical violation record including health-based and monitoring violations.
Lead & Copper
20/20
A
Lead at 0.0 ppb (90th percentile).
Contaminants
17.8/20
B
PFAS + legacy contaminant analysis.
Compliance
0/10
F
Monitoring and reporting compliance with EPA regulations.
Source Risk
4/5
B
Water source: Purchased surface water.
Water Safety

Is Tamaroa, IL water safe to drink?

Use Caution

Tamaroa's tap water meets most EPA standards but has areas that warrant attention. With a grade of A- (86.5/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 2,197 residents using surface water (rivers, lakes, or reservoirs).

1
Active Violations
0.0 ppb
Lead (90th %ile)

Recent water quality updates for Tamaroa

A timeline of significant water quality events, violations, and data updates.

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Tamaroa's water quality assessment. Grade: A- (86.5/100).

Key contaminant findings

Based on the most recent EPA sampling data for Tamaroa's water supply.

Lead Within Limits
Detected: 0.0 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Violation history

Tamaroa's water system has 1 total violation on record, including 0 health-based violations. 1 remain unresolved.

Where does Tamaroa's water come from?

Tamaroa's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 2,197 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment.

What Tamaroa residents can do

Request your utility's CCR

Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.

Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.

Contaminant Alerts

Top contaminants to know

View all ↓
Lead (90th percentile)
Inorganic / Heavy Metal
Safe
0.0 ppb
EPA Action Level: 15 ppb · 0% of limit
Safe Level
Chromium-6 (Hexavalent Chromium)
Inorganic
Detected
1.10 µg/L
CA MCL (no federal MCL): 10 µg/L · 11% of limit
DetectedUCMR 3 Data
Strontium
Inorganic
Detected
87.1 µg/L
EPA Health Ref Level: 1,500 µg/L · 6% of limit
DetectedUCMR 3 Data
Vanadium
Inorganic
Detected
1.09 µg/L
EPA Short-term HA: 21 µg/L · 5% of limit
DetectedUCMR 3 Data
Chlorate
Disinfection Byproduct
Over HA
672.9 µg/L
EPA Lifetime HA: 210 µg/L · +20% over limit
Over Health AdvisoryUCMR 3 Data
Molybdenum
Inorganic
Detected
1.30 µg/L
EPA Lifetime HA: 40 µg/L · 3% of limit
DetectedUCMR 3 Data
Compliance Record

Violation summary

1
Total violations
0
Health-based
1
Active / unresolved
Compliance Record

Violations & advisories

1 Total
1 Active
0 Health-based
0 Resolved
Active
Compliance Violation
Monitoring 0
Industrial pollution

Top industrial polluters within 10 miles of Tamaroa

Industrial polluters nearby

Reported releases to surface water by facilities near Tamaroa, ranked by pounds discharged annually.

FacilityTop chemicalTo surface water (lbs/yr)Distance
COOPER B-LINE INC PINCKNEYVILLE ILLINOIS
Fabricated Metals · EATON CORP
PINCKNEYVILLE, IL62274
8.0 mi
DUQUOIN LUBRICANTS BLENDING & PACKAGING DIV
Petroleum · SCHAEFFER MANUFACTURING CO
DU QUOIN, IL62832
7.8 mi
ILLINOIS MPP CORP
Fabricated Metals · MPP GROUP OF COS
DU QUOIN, IL62832
8.6 mi

Source: EPA Toxic Release Inventory (TRI) 2023

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 0.0 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

Lead level trend (90th percentile)

EPA action level: 15 ppb
Lead has decreased by 0.0 ppb from 1993 (0.0 ppb) to 2025 (0.0 ppb).
Infrastructure

Water source & infrastructure

Primary Source
Purchased Surface Water
Operator
Local Government
Population Served
2,197
Water Systems
1
Water Source

Where Tamaroa's water comes from

Purchased Surface Water

Tamaroa's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.

Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.

These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.

The system is operated by local government ownership and serves approximately 2,197 people through 1 water system.

Infrastructure

Water systems serving Tamaroa

System Name PWSID Population Source
TAMAROA IL1450250 2,197 SWP
Regional Comparison

How Tamaroa compares

Full Illinois rankings →

Tamaroa's score of 86.5/100 is above the average of 56/100 among major Illinois cities. It outscores 9 of 10 nearby cities.

Tamaroa (this city)
86.5
Chicago
35.2
Aurora
45.5
Joliet
38.5
Naperville
81.2
Champaign
91.9
Illinois avg
56
City Profile

About Tamaroa, IL

Wikipedia →

Du Quoin is a city in Perry County, Illinois, United States. As of the 2020 census, Du Quoin had a population of 5,827. It is best known for hosting the annual DuQuoin State Fair and the Street Machine Nationals.

Economic Profile
$47,500
Median Income
$68,734
Median Home Value
$1,025/mo
Median Rent
3.8%
Unemployment
Community
42.7
Median Age
240
People / sq mi
6.8%
College Educated
81%
Homeownership
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Frequently asked questions

Is Tamaroa, IL tap water safe to drink?

Tamaroa's water quality earned a grade of A- (86.5/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #318 out of 891 cities tested in Illinois.

What contaminants are in Tamaroa's water?

Lead was measured at 0.0 ppb (90th percentile). 1 violation is on record.

How is Tamaroa's water quality grade calculated?

The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.

Do I need a water filter in Tamaroa?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Tamaroa's water come from?

Tamaroa's water is sourced from Purchased surface water. The city has 1 water system serving approximately 2,197 residents.

How does Tamaroa's water compare to other cities?

Tamaroa ranks #318 out of 891 cities in Illinois (better than 64% of state cities) and #4672 out of 15744 cities nationally (70th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Tamaroa's small water system affect quality?

Tamaroa's system serves approximately 2,197 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 1 violation on record.