LET’S MAKE SENSE OF YOUR WATER!
Marysville Water Quality Report
Population Served: 26,000+
Primary Water Source: Mill Creek (surface water) and municipal groundwater wells
Source: City of Marysville Water Quality Report
DID YOU KNOW water quality reports, also known as “Consumer Confidence Reports (CCRs),” are annual documents that all public water systems are required to provide to you via mail and online. These reports are supposed to provide important information about the quality of the drinking water delivered over the previous year.
They can be difficult to read or understand. They are often many pages long and contain complex tables and charts. Culligan Water wants to change this and help you MAKE SENSE OF YOUR WATER.
This easy-to-read report will provide you with the following:
- Items of interest: Common water issues discussed within your community.
- Potential concerns: Unregulated contaminants that could be a health concern to you or your family.
- Water hardness: The current level of hard water in your area.
The Water Quality Report Legend:
- Health Concern Contaminants that have known health effects that the EPA regulates to protect public health.
- Aesthetic Issue Not necessarily a health risk but can affect your water’s appearance, taste, or odor.
- Unregulated Possible health risk but NO standards set by the EPA. Emerging chemicals and compounds the EPA is gathering data on.
Maximum Contaminant Level (MCL): The highest level of a contaminant that is allowed in drinking water.
Action Level (AL): The concentration of a contaminant that triggers additional action.
Public Health Goal (PHG): The level of a contaminant in drinking water that doesn’t pose a significant risk to health. PHG’s are NOT regulatory standards, and may not be attainable due to current remediation technologies.
ppm: parts per million (μg/L)
ppm: parts per billion (mg/L)
A Summary Of The Marysville Water Quality Report
1) Infrastructure & Water System Overview
The City of Marysville Division of Water provides drinking water through a combination of surface water from Mill Creek and municipal groundwater wells. The city maintains a current, unconditioned license to operate its water system and met or exceeded all federal and state drinking water standards during 2025.
Marysville also maintains an emergency interconnection with Del-Co Water to provide additional reliability during droughts, emergencies, or periods of unusually high demand.
2) Water Sources and Usage
Marysville’s drinking water comes from two sources:
- Mill Creek (surface water)
- Groundwater wells
Because Mill Creek is an open surface water source, it can be affected by agricultural runoff, septic systems, underground storage tanks, roadway runoff, and other nearby activities. The city continuously monitors and treats its water to meet all EPA drinking water standards.
3) Disinfection and Water Treatment
Marysville uses a multi-step treatment process that includes filtration and chlorination to produce safe drinking water.
Routine testing throughout the year monitors turbidity, bacteria, disinfectants, and contaminants to ensure compliance with federal and Ohio EPA regulations.
Recently:
- Multiple water main replacement projects were completed.
- Property was purchased for a future water treatment plant.
4) Minerals and Water Quality Highlights
Testing detected several naturally occurring minerals and treatment additives. Typical water quality includes:
- Fluoride: 1.03 ppm
- Total Trihalomethanes (TTHMs): 67.5 ppm
- Chlorine: 1.59 ppm
- Nitrate: 1.46 ppm
- Haloacetic Acids (HAA5): 21.5 ppb
Items of Interest
Common Tap Water Issues in Marysville
Although Marysville’s water meets all federal drinking water standards, some common treatment-related substances remain in finished drinking water.
Chlorine
EPA Max. Contaminant Level: 4.0
Public Health Goal: N/A
Concerns: Poor Taste and Smell
Removal: Reverse Osmosis Water Filters, Whole House Water Filters
Fluoride
EPA Max. Contaminant Level: 10
Public Health Goal: 10
Concerns: High concentrations may contribute to dental fluorosis
Removal: Reverse Osmosis Water Filters, Whole House Water Filters
Nitrate
EPA Max. Contaminant Level: 10
Public Health Goal: 0
Concerns: Elevated nitrate levels may pose health risks for infants if they exceed EPA limits.
Removal: Reverse Osmosis Water Filters, Whole House Water Filters
Potential Concerns
Explore Unregulated Contaminants in Marysville Water
Marysville uses chlorine to disinfect drinking water. This process creates disinfection byproducts such as TTHMs and HAA5. While these levels remain below EPA standards, many homeowners choose additional filtration to reduce long-term exposure.
HAA5
EPA Max. Contaminant Level (MCL): 60
Public Health Goal: 0
Concerns: Cancer
Removal: Water Softeners, Whole House Water Filters
TTHM
EPA Max. Contaminant Level: 80
Public Health Goal: 0
Concerns: Cancer
Removal: Reverse Osmosis Water Filters, Whole House Water Filters
Hardness Concerns
Does Marysville Have Hard Water?
Yes. Marysville’s water contains naturally occurring minerals from both groundwater and surface water sources. While the city’s report does not publish a hardness value, many homes in the area experience moderate hard water that can contribute to mineral buildup over time.
Hard water may contribute to:
- Scale buildup on fixtures
- Reduced appliance efficiency
- Soap scrum
- Spots on dishes and glassware
Forever Chemicals
PFAS Contaminants in Marysville
Marysville completed PFAS monitoring through the EPA’s Unregulated Contaminant Monitoring Rule (UCMR 5) as required under the federal PFAS drinking water rule. The Consumer Confidence Report states that monitoring was completed but does not publish individual PFAS concentrations within the report.
All PFAS samples were reported as non-detect, meaning none of the regulated PFAS compounds were detected in the city’s finished drinking water during testing.
PFAS
Public Health Goal: Varies
Concerns: Potential Longterm Exposure, Cancer, Emerging Contaminants
Removal: Water Softeners, Whole House Water Filters
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