Is Berlin, OH Tap Water Safe to Drink?
Graded B — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
76/100
waterverge.com Berlin, OH — Water Quality Report
Berlin's drinking water received a grade of B (76 out of 100), indicating good water quality. The city's 2 water systems serve approximately 1,946 residents using groundwater.
Lead levels were measured at 1.2 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 102 violations on record, including 2 health-based violations. 12 remain unresolved.
What to know about Berlin's water
Berlin ranks #350 out of 511 cities in Ohio for water quality, placing it below average in the state.
Berlin 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.
As a small community water system, Berlin may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 7 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Berlin, OH water safe to drink?
Berlin's drinking water has significant quality concerns based on EPA testing data. With a grade of B (76/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 1,946 residents using groundwater (wells).
Recent water quality updates for Berlin
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Berlin's water quality assessment. Grade: B (76/100).
Contaminants: Consumer Confidence Rule.
Contaminants: Consumer Confidence Rule.
Contaminants: Consumer Confidence Rule.
Federal disaster declaration (FEMA DR-3250). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-1122). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Berlin'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
Berlin's water system has 102 total violations on record, including 2 health-based violations. 12 remain unresolved. 7 violations were issued in the last 5 years.
Flood & environmental risk
Williams County has experienced 3 federally declared disasters since 1982. 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 St. Joseph River Nr Nettle Lake, Fish Creek.
Where does Berlin's water come from?
Berlin's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 1,946 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include West Branch St. Joseph River Nr Nettle Lake (river), Fish Creek (river).
What Berlin residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Berlin'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.
Berlin'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 Berlin
Industrial polluters nearby
Reported releases to surface water by facilities near Berlin, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
AURIA HOLMESVILLE LLC HOLMESVILLE, OH44633 | — | — | 8.8 mi |
SPERRY & RICE LLC KILLBUCK, OH44637 | — | — | 10.0 mi |
WESTLAKE ROYAL STONE LLC - STONECRAFT HOLMESVILLE, OH44633 | — | — | 7.8 mi |
RPM INDUSTRIAL COATINGS GROUP INC DBA FINISHWORKS MILLERSBURG, OH44654 | — | — | 4.5 mi |
WAYNE-DALTON CORP MOUNT HOPE, OH44660 | — | — | 5.1 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Williams County has experienced 3 federally declared disasters since 1982. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Berlin'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. | 1.2 | 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. | 364.00 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level (90th percentile)
Latest reading: 110.000 mg/L (2005)
EPA action level: 1.3 mg/L
See how Berlin compares by contaminant
Explore where Berlin ranks among all Ohio cities for specific contaminants.
Water source & infrastructure
Where Berlin's water comes from
Berlin'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 private ownership and serves approximately 1,946 people through 2 water systems.
Water bodies near Berlin
Berlin is located near 2 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Berlin
| System Name | PWSID | Population | Source |
|---|---|---|---|
| BERLIN WATER COMPANY | OH3800012 | 1,896 | GW |
| LAKE AVENUE TERRACE | OH7607412 | 50 | GW |
How Berlin compares
Full Ohio rankings →Berlin's score of 76/100 is above the average of 58/100 among major Ohio cities. It outscores 7 of 10 nearby cities.
Nearby cities
View Ohio rankings →About Berlin, OH
Learn more about your water
Guides and resources related to Berlin's water quality findings.
Explore water quality across Holmes
Frequently asked questions
Is Berlin, OH tap water safe to drink?
Berlin's water quality earned a grade of B (76/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #350 out of 511 cities tested in Ohio.
What contaminants are in Berlin's water?
Lead was measured at 1.2 ppb (90th percentile). 102 violations are on record.
How is Berlin'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 Berlin?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Berlin's water come from?
Berlin's water is sourced from Groundwater. The city has 2 water systems serving approximately 1,946 residents.
What health violations has Berlin's water system had?
Berlin has 2 health-based violations on record. The most recent violation was recorded in December 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 12 violations remain unresolved.
Is Berlin's groundwater at risk of contamination?
Berlin 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 102 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 Berlin's water compare to other cities?
Berlin ranks #350 out of 511 cities in Ohio (better than 32% of state cities) and #9424 out of 15744 cities nationally (40th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.