Is Marysville, KS Tap Water Safe to Drink?
Graded A- — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
85.5/100
waterverge.com Marysville, KS — Water Quality Report
Marysville's drinking water received a grade of A- (85.5 out of 100), indicating good water quality. The city's 1 water system serves approximately 3,417 residents using groundwater.
Lead levels were measured at 2.5 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 32 violations on record, including 0 health-based violations. 6 remain unresolved.
What to know about Marysville's water
Marysville ranks #70 out of 323 cities in Kansas for water quality, placing it above average in the state.
Marysville 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.
Water quality score
See methodology →Is Marysville, KS water safe to drink?
Marysville's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (85.5/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 3,417 residents using groundwater (wells).
Recent water quality updates for Marysville
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Marysville's water quality assessment. Grade: A- (85.5/100).
Contaminants: LEAD AND COPPER RULE REVISIONS.
Contaminants: LEAD AND COPPER RULE REVISIONS.
Contaminants: Lead and Copper Rule.
Federal disaster declaration (FEMA DR-3236). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-1000). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Marysville's water supply.
Well within EPA limits.
Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.
Violation history
Marysville's water system has 32 total violations on record, including 0 health-based violations. 6 remain unresolved. 2 violations were issued in the last 5 years.
Flood & environmental risk
Marshall County has experienced 3 federally declared disasters since 1973. 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 Big Blue R.
Where does Marysville's water come from?
Marysville's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 3,417 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Big Blue R (river).
What Marysville residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Marysville's water.
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.
Marysville'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.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Marysville
Industrial polluters nearby
Reported releases to surface water by facilities near Marysville, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
GP INDUSTRIAL PLASTERS LLC BLUE RAPIDS, KS66411 | — | — | 9.6 mi |
LANDOLL CO LLC MARYSVILLE, KS66508 | — | — | 0.5 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Marshall County has experienced 3 federally declared disasters since 1973. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Marysville's water supply, we recommend the following filter types.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 2.5 | 15 | ppb | Inorganic | Safe |
| Copper (90th percentile) CopperInorganic A metal that enters drinking water mainly through corrosion of copper plumbing. Small amounts are essential for health, but excess levels are harmful. Health EffectsGastrointestinal distress (nausea, vomiting, diarrhea) at short-term high levels; liver and kidney damage from long-term exposure. EPA Limit1.3 mg/L action level Common SourcesCorrosion of copper household plumbing, erosion of natural deposits. | 1.40 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level (90th percentile)
Latest reading: 1.400 mg/L (2010)
EPA action level: 1.3 mg/L
See how Marysville compares by contaminant
Explore where Marysville ranks among all Kansas cities for specific contaminants.
Water source & infrastructure
Where Marysville's water comes from
Marysville'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 3,417 people through 1 water system.
Water bodies near Marysville
Marysville is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Marysville
| System Name | PWSID | Population | Source |
|---|---|---|---|
| MARYSVILLE, CITY OF | KS2011706 | 3,417 | GW |
How Marysville compares
Full Kansas rankings →Marysville's score of 85.5/100 is above the average of 62/100 among major Kansas cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Kansas rankings →About Marysville, KS
Learn more about your water
Guides and resources related to Marysville's water quality findings.
Explore water quality across Marshall
Frequently asked questions
Is Marysville, KS tap water safe to drink?
Marysville's water quality earned a grade of A- (85.5/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #70 out of 323 cities tested in Kansas.
What contaminants are in Marysville's water?
Lead was measured at 2.5 ppb (90th percentile). 32 violations are on record.
How is Marysville'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 Marysville?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Marysville's water come from?
Marysville's water is sourced from Groundwater. The city has 1 water system serving approximately 3,417 residents.
Is Marysville's groundwater at risk of contamination?
Marysville 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 32 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 Marysville's water compare to other cities?
Marysville ranks #70 out of 323 cities in Kansas (better than 78% of state cities) and #5285 out of 15744 cities nationally (66th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.