WaterVerge

Is Eldorado Spring, MO Tap Water Safe to Drink?

Graded B, with 7 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓

2K residents served 1 water system PWSID: MO5024120
Overall Score
79.8 / 100
Violations
7 active
Last Updated
May 2026
Source
Groundwater
#319 of 509 in Missouri Top 52% nationally
Local Government
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
BGRADE
Water Quality Grade
79.8/100
waterverge.com
B 79.8/100

Eldorado Spring, MO — Water Quality Report

Eldorado Spring's drinking water received a grade of B (79.8 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,650 residents using groundwater.

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 26 violations on record, including 10 health-based violations. 7 remain unresolved.

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

What to know about Eldorado Spring's water

Eldorado Spring ranks #319 out of 509 cities in Missouri for water quality, placing it below average in the state.

Eldorado Spring relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.

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

The system has seen 7 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.

Quality Breakdown

Water quality score

See methodology →
79.8 out of 100 Grade B
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
32.8/45
C
Historical violation record including health-based and monitoring violations.
Lead & Copper
20/20
A
Lead at 0.0 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
5/10
D
Monitoring and reporting compliance with EPA regulations.
Source Risk
5/5
A
Water source: Groundwater.
Water Safety

Is Eldorado Spring, MO water safe to drink?

Concerns Identified

Eldorado Spring's drinking water has significant quality concerns based on EPA testing data. With a grade of B (79.8/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,650 residents using groundwater (wells).

7
Active Violations
0.0 ppb
Lead (90th %ile)

Recent water quality updates for Eldorado Spring

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

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Eldorado Spring's water quality assessment. Grade: B (79.8/100).

Violation
1 drinking water violation recorded

Contaminants: E. COLI.

Violation
1 drinking water violation recorded

Contaminants: Public Notice.

Violation
1 drinking water violation recorded

1 health-based. Contaminants: Groundwater Rule.

Key contaminant findings

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

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

Well within EPA limits.

Violation history

Eldorado Spring's water system has 26 total violations on record, including 10 health-based violations. 7 remain unresolved. 7 violations were issued in the last 5 years.

MROtherTTMONMCL
Most recent violations:
Jun 2024 E. COLI Open
May 2024 Public Notice Open
Mar 2024 Groundwater Rule Open
Oct 2023 Revised Total Coliform Rule Resolved
Jun 2023 Public Notice Open

Where does Eldorado Spring's water come from?

Eldorado Spring's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,650 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.

What Eldorado Spring residents can do

Install a water filter

Recommended: NSF-certified water filter. This addresses the specific contaminants found in Eldorado Spring's water.

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
Compliance Record

Violation summary

26
Total violations
10
Health-based
7
Active / unresolved
Jun 2024
Most recent violation
Compliance Record

Violations & advisories

26 Total
7 Active
10 Health-based
19 Resolved
Violations by category
Total Coliform Rule
15
Public Notice Rule and Revised PN Rule
4
Revised Total Coliform Rule
4
Ground Water Rule
2
Jun 2024 Active
E. COLI
Monitoring & Reporting
Monitoring & Reporting 0
May 2024 Active
Public Notice
Other Violation 0
Mar 2024 Active
Groundwater Rule
Treatment Technique
Health-Based Health 0
Jun 2023 Active
Public Notice
Other Violation 0
May 2009 Active
Public Notice
Other Violation 0
Sep 2008 Active
Public Notice
Other Violation 0
Active
Compliance Violation
Monitoring 0
Oct 2023 Resolved
Revised Total Coliform Rule
Monitoring
Monitoring Resolved Oct 2023
Oct 2022 Resolved
Revised Total Coliform Rule
Monitoring
Monitoring Resolved Oct 2022
Apr 2022 Resolved
Revised Total Coliform Rule
Monitoring
Monitoring Resolved Apr 2022
May 2020 Resolved
Revised Total Coliform Rule
Monitoring
Monitoring Resolved May 2020
Jan 2010 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Jan 2010
Mar 2009 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Mar 2009
Dec 2008 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2008
Jul 2008 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Jul 2008
Jul 2007 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Jul 2007
Apr 2007 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Apr 2007
May 2005 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved May 2005
Sep 1998 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Sep 1998
Sep 1994 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Sep 1994
Showing 20 of 26 violations

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 2024 (0.0 ppb).
Contaminant Rankings

See how Eldorado Spring compares by contaminant

Explore where Eldorado Spring ranks among all Missouri cities for specific contaminants.

Infrastructure

Water source & infrastructure

Primary Source
Groundwater
Operator
Local Government
Population Served
1,650
Water Systems
1
Water Source

Where Eldorado Spring's water comes from

Groundwater

Eldorado Spring's drinking water is drawn from underground aquifers through wells.

Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.

Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.

The system is operated by local government ownership and serves approximately 1,650 people through 1 water system.

Infrastructure

Water systems serving Eldorado Spring

System Name PWSID Population Source
CEDAR COUNTY PWSD 1 MO5024120 1,650 GW
Regional Comparison

How Eldorado Spring compares

Full Missouri rankings →

Eldorado Spring's score of 79.8/100 is above the average of 62/100 among major Missouri cities. It outscores 8 of 10 nearby cities.

Eldorado Spring (this city)
79.8
St. Louis
40.9
Columbia
61.4
Missouri avg
62
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Frequently asked questions

Is Eldorado Spring, MO tap water safe to drink?

Eldorado Spring's water quality earned a grade of B (79.8/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #319 out of 509 cities tested in Missouri.

What contaminants are in Eldorado Spring's water?

Lead was measured at 0.0 ppb (90th percentile). 26 violations are on record.

How is Eldorado Spring'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 Eldorado Spring?

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

Where does Eldorado Spring's water come from?

Eldorado Spring's water is sourced from Groundwater. The city has 1 water system serving approximately 1,650 residents.

What health violations has Eldorado Spring's water system had?

Eldorado Spring has 10 health-based violations on record. The most recent violation was recorded in June 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 7 violations remain unresolved.

Is Eldorado Spring's groundwater at risk of contamination?

Eldorado Spring uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 26 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.

How does Eldorado Spring's water compare to other cities?

Eldorado Spring ranks #319 out of 509 cities in Missouri (better than 37% of state cities) and #8139 out of 15744 cities nationally (48th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Eldorado Spring's small water system affect quality?

Eldorado Spring's system serves approximately 1,650 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 26 violations on record.