Del-Company Water Company, Inc.
EPA ID: OH2101412 · 150,000 people served · 34 ZIP codes
Not yet resolved: 5 EPA violations at Del-Company Water Company, Inc., affecting about 150,000 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 2 (2021) to 6 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Del-Company Water Company, Inc. Source: EPA SDWIS service area boundaries.
Service area boundary — Grade D
Service Area Demographics
The Del-Company Water Company, Inc. serves a community with a median household income of $93,328 and an estimated 737,515 residents across its service area. Approximately 50% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Del-Company Water Company, Inc.'s water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Delaware County, Ohio 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 Del-Company Water Company, Inc. compares to EPA limits
What This Means For You
Radium-228 at 2 pCi/L (combined Radium-226 & 228 ≤ 5 pCi/L) exceeds the EPA maximum of pCi/L (combined Radium-226 & 228 ≤ 5 pCi/L). Bone cancer and leukemia (known carcinogen). Consider ion exchange (water softener) filtration.
Stage 2 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.
Lead and Copper Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 2 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 162 detections recorded. 30 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Radium-228 was detected in this water system. ion exchange (water softener) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
Del-Company Water Company, Inc. (EPA ID: OH2101412) is a community water system in Ohio that serves approximately 150,000 people from surface water sources.
This system provides water to 34 ZIP codes across 29 communities.
Average Home Safety Score: D (52/100)
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 |
|---|---|---|---|
| June 1, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| May 17, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| May 15, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| January 1, 2024 | Radium-228 | Monitoring | Resolved |
| December 18, 2023 | Surface Water Treatment Rule | Monitoring | Unresolved |
| June 1, 2023 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| January 1, 2023 | Radium-228 | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Radium-228 | Radionuclides | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Lead and Copper Rule | Treatment Failure | 2 | No |
| Consumer Confidence Report Rule | Reporting Failure | 2 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High 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 OH or modeled from parcel and building-footprint data.
This system serves 34 ZIP codes:
43003 · 43011 · 43015 · 43016 · 43017 43019 · 43021 · 43031 · 43035 · 43040 43050 · 43054 · 43061 · 43064 · 43065 43066 · 43074 · 43081 · 43082 · 43085 43235 · 43240 · 43302 · 43314 · 43315 43320 · 43334 · 43338 · 43342 · 43344 43356 · 44833 · 44903 · 44904
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Del-Company Water Company, Inc. (OH2101412) on EPA.gov.
Frequently Asked Questions
Is Del-Company Water Company, Inc. water safe to drink?
Del-Company Water Company, Inc. has recorded 1 health-based violation in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Del-Company Water Company, Inc. serve?
Del-Company Water Company, Inc. serves approximately 150,000 people across 34 ZIP codes in Ohio.
Where does Del-Company Water Company, Inc. get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
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 →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
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.
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
Del-Company Water Company, Inc. (EPA ID: OH2101412) — request the latest Consumer Confidence Report or ask about specific contaminants.