WATER QUALITY MO

Water Quality in Winston, MO: No Violations — Grade D

Grade D · Score 53/100 · 1 water system · Updated 2026-05-03

Winston's water has significant violations. Water testing and filtration are recommended.

Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03

Check EPA compliance data for Winston, MO and you find zero violations across 1 water system — no MCL exceedances, no monitoring schedule failures, no public health notices, no enforcement orders, and no outstanding compliance actions of any kind documented in the federal Safe Drinking Water Information System.

Water Grade

Total Violations

Water Systems

ZIPs with Violations

ZIP Codes Monitored

Water Quality by ZIP Code in Winston

Water quality varies across Winston's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.

ZIP Code	Grade	Score	Violations	Health
64689	D	53	0	0	View report →

Water Quality Overview

Winston, Missouri receives a water quality grade of D with an overall score of 53 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).

No EPA violations have been recorded for the 1 water system serving Winston. This is a positive indicator, though it does not guarantee the absence of all contaminants — some substances (like PFAS) are not yet fully regulated.

What Grade D Means

A grade of D indicates significant compliance issues. Winston's water systems have accumulated violations that suggest ongoing water quality challenges. Residents should check their specific ZIP code report and consider water testing or filtration.

Lead Levels

Lead testing data for Winston is currently being collected. The EPA requires all community water systems to test for lead under the Lead and Copper Rule.

With 69% of homes built before 1986, Winston has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.

Radon Risk

Winston is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.

Water Systems Serving Winston

Winston is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 207 people across 1 ZIP codes.

Each water system is identified by a Public Water System ID (PWSID) and is required to:

Test for over 90 regulated contaminants on a regular schedule
Report results to the EPA and state regulators
Issue an annual Consumer Confidence Report (CCR) to all customers
Take corrective action when violations occur

How to Check Your Water in Winston

Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts

Winston vs. Nearby Missouri Cities

How Winston's water quality compares to similar cities in Missouri:

City	Grade	Violations	Systems	Population
Winston	D	0	1	207
Altamont	B	2	1	207
Asbury	B	1	1	207
Barnett	B	0	1	207

Common Questions About Winston Water

These are the most common questions residents search for about water quality in Winston, Missouri:

Is Winston water hard or soft? Water hardness varies by source. Winston's 1 water system uses a single source. Check your ZIP code report for specific hardness data.

Can I drink Winston tap water? Winston's water receives a grade of D (53/100). No health-based violations have been recorded, but home testing is always recommended.

What is the best water filter for Winston? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.

Winston vs. Missouri Average

Understanding how Winston compares to the broader Missouri average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.

To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Winston.

ZIP Codes in Winston

Winston spans 1 ZIP code. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.

Data Sources

Water quality: EPA Safe Drinking Water Information System (SDWIS)
Lead/copper: EPA Lead and Copper Rule sampling data
Radon: EPA Map of Radon Zones
Enforcement: EPA ECHO database
Filter recommendations: NSF/ANSI certified products

Updated daily.

Frequently Asked Questions

Is Winston tap water safe to drink?

Winston's water receives a grade of D (53/100). 0 health-based violations have been recorded. Independent water testing and filtration are recommended.

What contaminants are found in Winston water?

Winston water systems have zero recorded violations. While this is excellent, the EPA recommends annual testing as contaminants can enter your water through home plumbing.

How many water violations does Winston have?

Winston has 0 total EPA violations across 1 water system. 0 of 1 ZIP codes have at least one violation.

How many water systems serve Winston?

Winston is served by 1 public water system supplying drinking water across 1 ZIP codes. Water quality can vary between systems — check your specific ZIP code for localized data.

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