WaterVerge

Is Macks Creek, MO Tap Water Safe to Drink?

Graded B-, with 20 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓

1K residents served 1 water system PWSID: MO3024090
Overall Score
74.8 / 100
Violations
20 active
Last Updated
May 2026
Source
Groundwater
#366 of 509 in Missouri Top 62% nationally
Local Government
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
B-GRADE
Water Quality Grade
74.8/100
waterverge.com
B- 74.8/100

Macks Creek, MO — Water Quality Report

Macks Creek's drinking water received a grade of B- (74.8 out of 100), indicating fair water quality. The city's 1 water system serves approximately 1,300 residents using groundwater.

Lead levels were measured at 1.8 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 40 violations on record, including 3 health-based violations. 20 remain unresolved.

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

What to know about Macks Creek's water

Macks Creek ranks #366 out of 509 cities in Missouri for water quality, placing it below average in the state.

Macks Creek 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, Macks Creek may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

The system has seen 8 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.

Quality Breakdown

Water quality score

See methodology →
74.8 out of 100 Grade B-
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
29.8/45
C
Historical violation record including health-based and monitoring violations.
Lead & Copper
20/20
A
Lead at 1.8 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
3/10
F
Monitoring and reporting compliance with EPA regulations.
Source Risk
5/5
A
Water source: Groundwater.
Water Safety

Is Macks Creek, MO water safe to drink?

Concerns Identified

Macks Creek's drinking water has significant quality concerns based on EPA testing data. With a grade of B- (74.8/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,300 residents using groundwater (wells).

20
Active Violations
1.8 ppb
Lead (90th %ile)
5 events
Disaster History

Recent water quality updates for Macks Creek

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

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Macks Creek's water quality assessment. Grade: B- (74.8/100).

Violation
1 drinking water violation recorded

Contaminants: Revised Total Coliform Rule.

Violation
1 drinking water violation recorded

Contaminants: Revised Total Coliform Rule.

Violation
1 drinking water violation recorded

Contaminants: E. COLI.

Disaster
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS AND FLOODING

Federal disaster declaration (FEMA DR-4317). Flood event — may have impacted local water infrastructure.

Disaster
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING

Federal disaster declaration (FEMA DR-4250). Flood event — may have impacted local water infrastructure.

Key contaminant findings

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

Lead Within Limits
Detected: 1.8 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Violation history

Macks Creek's water system has 40 total violations on record, including 3 health-based violations. 20 remain unresolved. 8 violations were issued in the last 5 years.

MONMROtherTTMCL
Most recent violations:
Nov 2025 Revised Total Coliform Rule Resolved
Oct 2025 Revised Total Coliform Rule Resolved
Sep 2025 E. COLI Open
Feb 2025 Revised Total Coliform Rule Resolved
Jan 2025 TTHM Resolved

Flood & environmental risk

Camden County has experienced 5 federally declared disasters since 1993. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Niangua River Ab Lake Niangua Nr Macks Creek, Niangua River At Tunnel Dam Near Macks Creek, Little Niangua River Near Macks Creek.

SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS AND FLOODING
Flood FEMA DR-4317
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA DR-4250
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA DR-3374

Where does Macks Creek's water come from?

Macks Creek's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,300 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Niangua River Ab Lake Niangua Nr Macks Creek (river), Niangua River At Tunnel Dam Near Macks Creek (river), Little Niangua River Near Macks Creek (river).

What Macks Creek residents can do

Install a water filter

Recommended: NSF-certified water filter. This addresses the specific contaminants found in Macks Creek'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.

Monitor alerts during storms

Macks Creek's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.

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
1.8 ppb
EPA Action Level: 15 ppb · 12% of limit
Safe Level
Compliance Record

Violation summary

40
Total violations
3
Health-based
20
Active / unresolved
Nov 2025
Most recent violation
Compliance Record

Violations & advisories

40 Total
20 Active
3 Health-based
20 Resolved
Violations by category
Revised Total Coliform Rule
9
Consumer Confidence Rule
9
Total Coliform Rule
8
Ground Water Rule
5
Public Notice Rule and Revised PN Rule
4
Sep 2025 Active
E. COLI
Monitoring & Reporting
Monitoring & Reporting 0
Sep 2024 Active
E. COLI
Monitoring & Reporting
Monitoring & Reporting 0
Jul 2023 Active
E. COLI
Monitoring & Reporting
Monitoring & Reporting 0
Jul 2019 Active
Consumer Confidence Rule
Other Violation 0
Nov 2017 Active
Public Notice
Other Violation 0
Nov 2017 Active
Groundwater Rule
Treatment Technique
Health-Based Health 0
Aug 2017 Active
Groundwater Rule
Other Violation 0
Aug 2017 Active
Public Notice
Other Violation 0
Jul 2017 Active
Consumer Confidence Rule
Other Violation 0
Jul 2016 Active
Consumer Confidence Rule
Other Violation 0
Jun 2015 Active
Public Notice
Other Violation 0
Jul 2013 Active
Consumer Confidence Rule
Other Violation 0
Jul 2012 Active
Consumer Confidence Rule
Other Violation 0
Oct 2010 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Jul 2010 Active
Consumer Confidence Rule
Other Violation 0
Jul 2009 Active
Consumer Confidence Rule
Other Violation 0
Feb 2008 Active
Public Notice
Other Violation 0
Jul 2007 Active
Consumer Confidence Rule
Other Violation 0
Jul 2006 Active
Consumer Confidence Rule
Other Violation 0
Active
Compliance Violation
Monitoring 0
Showing 20 of 40 violations
Environmental Risk

Flood & disaster history

5
Declared disasters
Jun 2017
Most recent
Flood
Most common type

Camden County has experienced 5 federally declared disasters since 1993. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.

Jun 2017
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS AND FLOODING
Flood FEMA #4317
Jan 2016
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA #4250
Jan 2016
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA #3374
Sep 2005
HURRICANE KATRINA EVACUATION
Hurricane FEMA #3232
Jul 1993
SEVERE STORMS & FLOODING
Flood FEMA #995

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 1.8 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 0.2 ppb from 1993 (2.0 ppb) to 2025 (1.8 ppb).
Contaminant Rankings

See how Macks Creek compares by contaminant

Explore where Macks Creek ranks among all Missouri cities for specific contaminants.

Infrastructure

Water source & infrastructure

Primary Source
Groundwater
Operator
Local Government
Population Served
1,300
Water Systems
1
Water Source

Where Macks Creek's water comes from

Groundwater

Macks Creek'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 1,300 people through 1 water system.

Local Hydrology

Water bodies near Macks Creek

Macks Creek is located near 3 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.

Niangua River Ab Lake Niangua Nr Macks Creek
river
Niangua River At Tunnel Dam Near Macks Creek
river
Little Niangua River Near Macks Creek
river
Infrastructure

Water systems serving Macks Creek

System Name PWSID Population Source
CAMDEN COUNTY PWSD 1 MO3024090 1,300 GW
Regional Comparison

How Macks Creek compares

Full Missouri rankings →

Macks Creek's score of 74.8/100 is above the average of 62/100 among major Missouri cities. It outscores 5 of 10 nearby cities.

Macks Creek (this city)
74.8
St. Louis
40.9
Columbia
61.4
Missouri avg
62
City Profile

About Macks Creek, MO

Wikipedia →

Macks Creek is an unincorporated community and census-designated place in southwest Camden County, Missouri, United States. The population was 244 at the 2010 census.

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Frequently asked questions

Is Macks Creek, MO tap water safe to drink?

Macks Creek's water quality earned a grade of B- (74.8/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #366 out of 509 cities tested in Missouri.

What contaminants are in Macks Creek's water?

Lead was measured at 1.8 ppb (90th percentile). 40 violations are on record.

How is Macks Creek'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 Macks Creek?

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

Where does Macks Creek's water come from?

Macks Creek's water is sourced from Groundwater. The city has 1 water system serving approximately 1,300 residents.

What health violations has Macks Creek's water system had?

Macks Creek has 3 health-based violations on record. The most recent violation was recorded in November 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 20 violations remain unresolved.

Is Macks Creek's groundwater at risk of contamination?

Macks Creek 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 40 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 Macks Creek's water compare to other cities?

Macks Creek ranks #366 out of 509 cities in Missouri (better than 28% of state cities) and #9753 out of 15744 cities nationally (38th percentile). The grade of B- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Macks Creek's small water system affect quality?

Macks Creek's system serves approximately 1,300 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 40 violations on record.