Plainfield, IN: 12 Violations — 56/100 (2026)
1 ZIP code · 6 water systems · Updated 2026-06-03
The systems supplying Plainfield vary in performance across IN benchmarks — most meet minimum federal standards, but documented violations in select areas are on record.
How Plainfield Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Plainfield Residents
- Your city's water systems recorded 12 violations in the past 5 years.
- Average lead level: 0.0017 mg/L.
- Homes built before 1986: 41% — older plumbing may contain lead solder.
- Estimated remediation: $2,900 per household.
- CDC health risk index: 12.39 — above typical levels.
Plainfield's Water Providers
Federal records list 6 water systems tied to Plainfield, IN. Of those, 3 are the primary providers, meaning service conditions, rate structures, and compliance histories can differ depending on where a property sits.
Overview
We track water quality and home safety data for 1 ZIP code in Plainfield, Indiana (population ~38,889), covering 6 community water systems serving approximately 932,519 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Plainfield: C (56/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Plainfield water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0017 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 10 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 6 | 1 |
| Lead | Inorganic | 2 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | 1 |
| Stage 1 DBP Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 46168 | C | 12 | 0 | Plainfield Water Works |
All ZIP Codes in Plainfield
- 46168 [C] — 12 violations
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Plainfield Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Plainfield's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Plainfield Infrastructure Age
With 41% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Because Plainfield's housing stock spans a wide range of construction eras, the median build year of 1996 lands in a zone where two distinct risk populations share the same residential market. Homes built before 1986 may have lead-soldered copper plumbing joints — that practice was federally prohibited in 1986 but remained standard until then. The fraction built before 1970 face an additional risk: lead pipes used for service line connections were common before that decade, meaning both the pipe and the solder may be lead-containing in the oldest structures. Residents in mid-century or earlier homes face a different risk environment than neighbors in houses built after 1986, even if they drink from the same utility's supply — and that property-level divergence is what makes the age distribution above more diagnostic than the city-wide median alone.
Most homes in Plainfield were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Plainfield
Middle of the range — Plainfield homeowners face a remediation share that calls for real financial attention without reaching crisis territory.
Remediation costs are moderate relative to home values in Plainfield. The estimated $1,900–$4,100 range is manageable for most homeowners but still worth budgeting for. Home values are 52% above the Indiana average.
Plainfield: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Older interior plumbing shapes the local picture: 41% of Plainfield homes predate the federal solder ban, and aggregate sampling either approaches or crosses the action benchmark. That mix makes a single-home draw a standard pre-purchase or pre-occupancy step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Plainfield: Flood History & Water Damage Risk
How does Plainfield's flood record connect to local water quality? The NFIP documents 32 claims — enough to signal recurring events — and 100% of ZIP codes carry FEMA flood zone status. That combination places flooding in the category of factors that can periodically affect water infrastructure, even if the area isn't among the highest-exposure communities in the NFIP dataset.
Plainfield has a moderate flood history with 32 FEMA claims averaging $4,214 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$2,900</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Plainfield
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for Consumer Confidence Report Rule can reduce the most common contaminant found in Plainfield's water.
- Check your home's plumbing. With 41% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Plainfield, IN