Is Olmsted Twp, OH Tap Water Safe to Drink?
Graded A-, with 3 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
85/100
waterverge.com Olmsted Twp, OH — Water Quality Report
Olmsted Twp's drinking water received a grade of A- (85 out of 100), indicating good water quality. The city's 1 water system serves approximately 2,199 residents using purchased surface water.
Lead levels were measured at 0.0 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 6 violations on record, including 1 health-based violation. 3 remain unresolved.
What to know about Olmsted Twp's water
Olmsted Twp ranks #136 out of 511 cities in Ohio for water quality, placing it mid-range in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Olmsted Twp may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Olmsted Twp, OH water safe to drink?
Olmsted Twp's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (85/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 2,199 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Olmsted Twp
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Olmsted Twp's water quality assessment. Grade: A- (85/100).
Contaminants: Consumer Confidence Rule.
Contaminants: Public Notice.
Contaminants: Revised Total Coliform Rule.
Federal disaster declaration (FEMA DR-4098). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3250). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Olmsted Twp's water supply.
Well within EPA limits.
Violation history
Olmsted Twp's water system has 6 total violations on record, including 1 health-based violation. 3 remain unresolved. 3 violations were issued in the last 5 years.
Flood & environmental risk
Cuyahoga County has experienced 6 federally declared disasters since 1972. 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 West Branch Rocky River At West View, Baker Creek At Olmsted Falls, Unnamed Tributary To W B Rocky R Near Berea, Plum Creek Near Olmsted Falls, Unnamed Trib To W B Rocky R Near Olmsted Falls.
Where does Olmsted Twp's water come from?
Olmsted Twp's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 2,199 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include West Branch Rocky River At West View (river), Baker Creek At Olmsted Falls (river), Unnamed Tributary To W B Rocky R Near Berea (river), Plum Creek Near Olmsted Falls (river), Unnamed Trib To W B Rocky R Near Olmsted Falls (river).
What Olmsted Twp residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Olmsted Twp'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.
Olmsted Twp'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
Flood & disaster history
Cuyahoga County has experienced 6 federally declared disasters since 1972. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
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. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Olmsted Twp compares by contaminant
Explore where Olmsted Twp ranks among all Ohio cities for specific contaminants.
Water source & infrastructure
Where Olmsted Twp's water comes from
Olmsted Twp's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by private ownership and serves approximately 2,199 people through 1 water system.
Water bodies near Olmsted Twp
Olmsted Twp is located near 5 notable water bodies. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Olmsted Twp
| System Name | PWSID | Population | Source |
|---|---|---|---|
| COLUMBIA PARK WATER SYSTEM | OH1841012 | 2,199 | SWP |
How Olmsted Twp compares
Full Ohio rankings →Olmsted Twp's score of 85/100 is above the average of 58/100 among major Ohio cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Ohio rankings →Learn more about your water
Guides and resources related to Olmsted Twp's water quality findings.
Explore water quality across Cuyahoga
Frequently asked questions
Is Olmsted Twp, OH tap water safe to drink?
Olmsted Twp's water quality earned a grade of A- (85/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #136 out of 511 cities tested in Ohio.
What contaminants are in Olmsted Twp's water?
Lead was measured at 0.0 ppb (90th percentile). 6 violations are on record.
How is Olmsted Twp'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 Olmsted Twp?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Olmsted Twp's water come from?
Olmsted Twp's water is sourced from Purchased surface water. The city has 1 water system serving approximately 2,199 residents.
What health violations has Olmsted Twp's water system had?
Olmsted Twp has 1 health-based violation on record. The most recent violation was recorded in November 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 3 violations remain unresolved.
How does Olmsted Twp's water compare to other cities?
Olmsted Twp ranks #136 out of 511 cities in Ohio (better than 73% of state cities) and #5571 out of 15744 cities nationally (65th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Olmsted Twp's small water system affect quality?
Olmsted Twp's system serves approximately 2,199 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 6 violations on record.