Colby, WI: 16 Violations - Home Safety Score unavailable
1 ZIP code · 5 water systems · Updated
Data: EPA SDWIS
What You Should Know About Colby Water
- Your city's water systems recorded 16 violations in the past 5 years.
- Average lead level: 0.0035 mg/L.
- Homes built before 1986: 71% - older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 12.89 - above typical levels.
Who Supplies Your Water in Colby
Structurally, Colby, WI's water supply is divided. Federal data identifies 5 water systems in the area, with 3 providers serving the bulk of residential connections. These utilities operate independently, meaning rate-setting authority and EPA compliance accountability are distributed rather than centralized.
Overview
We track home safety data for 1 ZIP code in Colby, Wisconsin (population ~3,724), covering 5 community water systems serving approximately 6,611 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 4 health-based violations appear in the available health breakdown.
Water Sources
Colby water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0035 mg/L (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status 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 |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 8 | 1 |
| Lead and Copper Rule | Treatment Technique | 8 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 6 | 1 |
| Lead | Inorganic | 4 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 54421 | — | 16 | 4 | Abbotsford Waterworks |
All ZIP Codes in Colby
- 54421 - 16 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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Health Outcomes in Colby
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
Top Contaminants in Colby Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Colby
With 71% 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 the majority of Colby's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1978 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Colby were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Colby Homeowners
In Colby, property wealth outpaces what documented remediation typically demands - the equity burden lands well within the low tier.
Remediation costs in Colby are relatively low compared to home values. The $800–$1,500 estimated range is a small fraction of median property value. Home values are 23% below the Wisconsin average.
Lead Exposure Risk for Children in Colby
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.
Routinely in Colby, where 71% of housing predates the solder ban and aggregate utility readings hover near the federal threshold, a faucet-level draw functions as a standard household step for families with small kids.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Colby, WI