Callao, VA: 1 Violation — 89/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Drinking water tracked for Callao by VA authorities posts above-average scores — the majority of systems are free from health-based exceedances and the city's grade sits above the state median.
How Callao Compares
Data: EPA SDWIS Last verified: 2026-06-03
Callao Water: The Quick Version
- Your city's water systems recorded 1 violation in the past 5 years.
- Average lead level: 0.0054 mg/L.
- Homes built before 1986: 52% — older plumbing may contain lead solder.
- Estimated remediation: $2,500 per household.
- CDC health risk index: 15.56 — above typical levels.
Water Systems Serving Callao
Federal records list 1 water system serving Callao, VA. One provider accounts for the large majority of residential water connections in the area, concentrating infrastructure and compliance accountability.
Overview
We track water quality and home safety data for 1 ZIP code in Callao, Virginia, covering 1 community water system serving approximately 2,447 people.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Callao: A (89/100)
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
Callao water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0054 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 22435 | A | 1 | 0 | Northumberland Shores |
All ZIP Codes in Callao
- 22435 [A] — 1 violation
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.
CDC Health Data for Callao
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
Key Contaminants Detected in Callao
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Callao's Housing Stock?
With 52% 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
Pre-1986 plumbing is not a rare legacy case in Callao — it's the dominant profile. The median build year of 1986 indicates a housing stock where lead-soldered copper joints are a common structural feature of residences across the city.
Over half of homes in Callao 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.
Callao: Remediation Cost in Perspective
The equity impact of remediation in Callao sits at a moderate level — real enough to plan for, within reach for most.
Remediation costs are moderate relative to home values in Callao. The estimated $1,800–$4,000 range is manageable for most homeowners but still worth budgeting for. Home values are 36% below the Virginia average.
Protecting Children from Lead in Callao
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: 52% of Callao 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.
Climate-Related Water Risk for Callao
How does Callao's flood record connect to local water quality? The NFIP documents 16 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.
Callao has a moderate flood history with 16 FEMA claims averaging $54,579 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>$2,500</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.
Deep Dive Reports
Detailed analysis for Callao, VA