Cairnbrook, PA: 1 Violation — 75/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Tap water in Cairnbrook, PA scores well — low violation counts, above-average safety grade.
How Cairnbrook Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Cairnbrook Residents
- Your city's water systems recorded 1 violation in the past 5 years.
- Homes built before 1986: 80% — older plumbing may contain lead solder.
- Estimated remediation: $1,600 per household.
Cairnbrook's Water Providers
Throughout Cairnbrook, PA, water comes from one of 2 primary utilities out of 2 total systems — independent providers with different rate structures, infrastructure, and compliance records that vary across the service territory.
Overview
We track water quality and home safety data for 1 ZIP code in Cairnbrook, Pennsylvania (population ~867), covering 2 community water systems serving approximately 2,894 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 Cairnbrook: B (75/100)
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
Cairnbrook water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Cairnbrook
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate 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 | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 15924 | B | 1 | 0 | Central City Water Authority |
All ZIP Codes in Cairnbrook
- 15924 [B] — 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.
What's in Cairnbrook's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cairnbrook Infrastructure Age
With 80% 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
Plumbing risk in older housing is defined by two eras: the pre-1970 period when lead pipes were commonly used for service lines, and the 1970-to-1986 period when lead solder remained standard in copper plumbing until the federal ban. Cairnbrook's median build year of 1945 lands in a range where both eras are heavily represented in the housing stock. That creates an elevated aggregate environment for plumbing-related lead exposure — one that city-level water quality averages don't capture, because the risk sits inside individual properties rather than in the distribution system.
Over half of homes in Cairnbrook 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.
How Remediation Costs Compare in Cairnbrook
The cost-to-value ratio in Cairnbrook is in the moderate range — neither dismissible nor alarming, but above the threshold where remediation can be treated as incidental. Most homeowners here are weighing a real equity commitment, and the moderate classification reflects that accurately.
Remediation costs are moderate relative to home values in Cairnbrook. The estimated $800–$2,600 range is manageable for most homeowners but still worth budgeting for. Home values are 62% below the Pennsylvania average.
Cairnbrook: 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.
In recent monitoring under the Lead and Copper Rule, citywide samples for Cairnbrook have approached or crossed the regulatory action level on multiple occasions. Combined with 80% of stock dating from the pre-rule era, the picture supports baseline single-tap reads as a standard household-level step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Cairnbrook: Flood History & Water Damage Risk
The NFIP's multi-decade dataset for Cairnbrook shows limited claims and limited zone coverage — a pattern that holds consistent implications for water quality. Flooding disrupts treatment systems and distribution infrastructure in proportion to event frequency, and environments with infrequent flood activity keep those disruption pathways largely dormant.
Cairnbrook has a relatively low flood history with 1 FEMA claims on record. While risk is limited, severe weather events can still impact water infrastructure.
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>$1,600</strong> remediation cost per household.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Cairnbrook, PA