Marshfield Public Water System
EPA ID: MO5010503 · 7,425 people served · 1 ZIP code
Five-year compliance data for Marshfield Public Water System includes 3 violations the EPA has not yet marked resolved — those open findings are part of the utility's current enforcement profile, covering a service population of approximately 7,425 residents across the area it supplies.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Marshfield Public Water System Source: EPA SDWIS service area boundaries.
Service area boundary — Grade B
Service Area Demographics
The Marshfield Public Water System serves a community with a median household income of $76,304 and an estimated 17,479 residents across its service area. Approximately 49% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 88% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Marshfield Public Water System's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 4% of homes in Webster County, Missouri rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Marshfield Public Water System compares to EPA limits
What This Means For You
Contaminant 0700 at 6 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Total Coliform at 1 presence exceeds the EPA maximum of presence.
Lead and Copper Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Comparable Water Systems
Similar-sized systems in Missouri
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Marshfield Public Water System (EPA ID: MO5010503) is a community water system in Missouri that serves approximately 7,425 people from groundwater sources.
This system serves ZIP code 65706 in Marshfield.
Average Home Safety Score: B (70/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| September 24, 2025 | Lead and Copper Rule | Monitoring | Resolved |
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Unresolved |
| May 1, 2025 | Contaminant 0700 | Monitoring | Resolved |
| February 1, 2025 | Contaminant 0700 | Monitoring | Resolved |
| December 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| October 1, 2024 | Contaminant 0700 | Monitoring | Resolved |
| October 1, 2024 | Stage 1 DBP Rule | Monitoring | Resolved |
| August 1, 2024 | Contaminant 0700 | Monitoring | Resolved |
| May 1, 2024 | Contaminant 0700 | Monitoring | Resolved |
| March 1, 2024 | Contaminant 0700 | Monitoring | Unresolved |
| September 1, 2023 | Total Coliform | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Contaminant 0700 | Other Violation | 6 | No |
| Stage 1 DBP Rule | Treatment Failure | 2 | No |
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Total Coliform | Microbiological | 1 | No |
| Lead and Copper Rule | Treatment Failure | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 65706 | 0.00547 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by MO or modeled from parcel and building-footprint data.
- 65706 — Marshfield
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Marshfield Public Water System (MO5010503) on EPA.gov.
Frequently Asked Questions
Is Marshfield Public Water System water safe to drink?
Marshfield Public Water System has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does Marshfield Public Water System serve?
Marshfield Public Water System serves approximately 7,425 people across 1 ZIP code in Missouri.
Where does Marshfield Public Water System get its water?
The primary water source is groundwater.
Contact Your Water Utility
Public-record contact information for the water utility serving this system. Use these channels to request water quality reports, ask about service, or report issues directly.
Contact information from MARSHFIELD PWS Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility, does not act as its agent, and does not provide customer support for it. Contact details shown are public-record information from CCR filings. For service issues, contact the utility directly using the information above.
Water Source & Treatment
Where this water originates and how it's treated before reaching your tap.
Source: MARSHFIELD PWS Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility. Treatment and source data are sourced from the utility's published CCR filings.
The Department of Natural Resources conducted a source water assessment to determine the susceptibility of our water source to potential contaminants. Assessment maps and summary information sheets are available at https://drinkingwater.missouri.edu/.
Treatment regime
How this utility classifies its treatment process and what each reported treatment chemical does.
Treatment chemicals and what each one does
Chemical names are reported verbatim by the utility. Purpose categories are ZipCheckup annotations based on standard drinking-water treatment practice.
Watershed exposure sources reported
Land-use and natural conditions identified in the utility's source-water assessment as potential contamination sources upstream of treatment.
Treatment classification and chemical list sourced from MARSHFIELD PWS Consumer Confidence Report.
Treatment intensity is a ZipCheckup-derived classification based on the chemicals and processes the utility reports. Chemicals and contamination sources are taken verbatim from the utility's CCR filing. Routine federal monitoring and contaminant testing shown elsewhere on this page determine whether the water meets safety standards, not the treatment classification.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
<p>Lead service line inventory was required to be prepared and can be requested from MARSHFIELD PWS.</p><p>Special Lead and Copper Notice: Lead can cause serious health problems, especially for pregnant women and young children. MARSHFIELD PWS is responsible for providing high quality drinking water and removing water system owned and controlled lead pipes, but cannot control the variety of materials used in plumbing components in your home.</p>
Lead Service Line Replacement Tracker
This water utility's lead service line (LSL) replacement program is tracked from public Consumer Confidence Report filings. Email signup notifies subscribers when the utility files an updated replacement plan or progress milestone.
MARSHFIELD PWS
ZipCheckup is not affiliated with this water utility. LSL replacement-program data is sourced from public CCR filings published by the utility. Subscription notifications are based on automated parsing of subsequent CCR releases.
Learn more about Lead and Copper Rule replacement requirements →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Aesthetic water quality
These measurements describe the look, taste, and feel of the water this utility delivers. They are not contaminant violations — they sit alongside federal Secondary Maximum Contaminant Levels (SMCLs) which the EPA publishes as non-enforceable guidance.
Aesthetic measurements from MARSHFIELD PWS Consumer Confidence Report.
Aesthetic measurements are reported by the utility from its annual sampling. EPA Secondary MCLs are advisory thresholds — values outside them indicate aesthetic concerns such as taste or appearance, not health violations. Federal contaminant testing is shown in the sections above.
Hard water detected in MARSHFIELD PWS
Your utility reported water hardness of 301 ppm CaCO₃ (17.6 grains per gallon) in its most recent Consumer Confidence Report. This is in the very hard range and may cause scale buildup, reduced appliance lifespan, and dry skin or hair.
There are three common approaches to treating hard water: salt-based ion-exchange softeners (most effective, require salt refills), salt-free conditioners (lower maintenance, scale prevention only), and reverse osmosis at the kitchen sink (cooking and drinking water only). Aquasana, EcoWater, Pelican, and SpringWell are among the major US brands.
Paid Partner. ZipCheckup earns commission on Aquasana purchases. We do not test water or verify product effectiveness for specific hardness levels — manufacturer claims are theirs alone. Consult a certified water-quality professional for personalized advice.
Hardness data parsed from this utility's most recent Consumer Confidence Report. Severity bands per USGS hard water classification.
Notable events and violations
This section summarizes events the utility chose to disclose in its most recent Consumer Confidence Report, plus any federal compliance violations the utility recorded against itself. Both lists are utility-authored — ZipCheckup does not audit, judge, or reorder them.
Federal compliance violations on record
These entries are taken verbatim from the utility's CCR violations section. EPA defines four broad violation categories: Maximum Contaminant Level (MCL), Treatment Technique (TT), Monitoring & Reporting (M&R), and Public Notification (PN).
-
public notice · LEAD AND COPPER RULE REVISIONS2025
NOTIFICATION, KNOWN OR POTENTIAL LSL
Violations record from MARSHFIELD PWS Consumer Confidence Report.
Notable events from the utility's CCR
These bullet entries are the utility's own narration of operational, regulatory, or infrastructure events during the reporting period.
- Uncorrected Significant Deficiencies identified: Water System Well Seal issue (05/29/2025)
- Uncorrected Significant Deficiency: Known X Connection (05/29/2025)
ZipCheckup note: items above reflect what the utility published in its most recent CCR. Federal violation records are also tracked separately by the EPA Safe Drinking Water Information System (SDWIS) — the SDWIS record is the authoritative federal source for any specific regulatory action.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Marshfield Public Water System (EPA ID: MO5010503) — request the latest Consumer Confidence Report or ask about specific contaminants.