Indian Hill City Public Water System
EPA ID: OH3101112 · 15,000 people served · 75 ZIP codes
Federal monitoring records confirm Indian Hill City Public Water System has operated without any EPA violations for the full five-year window — covering every contaminant category and reporting cycle across a service area of approximately 15,000 residents, with no gaps in the compliance record.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Indian Hill City Public Water System Source: EPA SDWIS service area boundaries.
Service area boundary — Grade D
Service Area Demographics
The Indian Hill City Public Water System serves a community with a median household income of $70,897 and an estimated 907,283 residents across its service area. Approximately 78% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 34% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Indian Hill City Public Water System's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 1% of homes in Hamilton County, Ohio rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 172 detections recorded. 51 exceed federal EPA limits (4 ppt for PFOA/PFOS). 6 exceed state limits.
Comparable Water Systems
Similar-sized systems in Ohio
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
Indian Hill City Public Water System (EPA ID: OH3101112) is a community water system in Ohio that serves approximately 15,000 people from groundwater sources.
This system provides water to 75 ZIP codes across 5 communities.
Average Home Safety Score: D (43/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water 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: 9 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 66 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 75 ZIP codes:
45111 · 45140 · 45150 · 45174 · 45201 45202 · 45203 · 45204 · 45205 · 45206 45207 · 45208 · 45209 · 45211 · 45212 45213 · 45214 · 45215 · 45216 · 45217 45218 · 45219 · 45220 · 45221 · 45222 45223 · 45224 · 45225 · 45226 · 45227 45229 · 45230 · 45231 · 45232 · 45233 45234 · 45235 · 45236 · 45237 · 45238 45239 · 45240 · 45241 · 45242 · 45243 45244 · 45245 · 45246 · 45247 · 45248 45249 · 45250 · 45251 · 45252 · 45253 45254 · 45255 · 45258 · 45262 · 45263 45264 · 45267 · 45268 · 45269 · 45270 45271 · 45273 · 45274 · 45275 · 45277 45280 · 45296 · 45298 · 45299 · 45999
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Indian Hill City Public Water System (OH3101112) on EPA.gov.
Frequently Asked Questions
Is Indian Hill City Public Water System water safe to drink?
Based on EPA records, Indian Hill City Public Water System has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Indian Hill City Public Water System serve?
Indian Hill City Public Water System serves approximately 15,000 people across 75 ZIP codes in Ohio.
Where does Indian Hill City Public Water System get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Above Current MCL
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS compounds were measured above 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
Indian Hill City Public Water System (EPA ID: OH3101112) — request the latest Consumer Confidence Report or ask about specific contaminants.