North Fork, CA: 22 Health Violations — 50/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
Water monitoring data from North Fork, CA tells a below-average story — health violations are present and system-level detail is worth reviewing before drawing conclusions.
How North Fork Compares
Data: EPA SDWIS Last verified: 2026-06-03
North Fork Water: The Quick Version
- Your city's water systems recorded 24 violations in the past 5 years.
- Average lead level: 0.0031 mg/L.
- Homes built before 1986: 64% — older plumbing may contain lead solder.
- Estimated remediation: $1,000 per household.
- CDC health risk index: 13.1 — above typical levels.
Water Systems Serving North Fork
3 independent water providers serve North Fork, CA — 3 systems appear in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in North Fork, California, covering 3 community water systems serving approximately 2,778 people.
1 of 1 ZIP code (100%) have recorded EPA violations. 22 health-based violations documented.
Home Safety Score
Average Home Safety Score for North Fork: D (50/100)
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
North Fork water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0031 mg/L (EPA action level: 0.015 mg/L)
- 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 |
|---|---|---|---|
| Barium | Inorganic | 24 | 1 |
| Contaminant 4109 | Other | 14 | 1 |
| Contaminant 1032 | Other | 4 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 4 | 1 |
| Contaminant 2414 | Other | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 93643 | D | 24 | 22 | Sierra Linda Mutual Water Company |
All ZIP Codes in North Fork
- 93643 [D] — 24 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.
CDC Health Data for North Fork
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 North Fork
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is North Fork's Housing Stock?
With 64% 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
When a city's housing median build year is 1971, as in North Fork, the implication for water quality research is straightforward: municipal-level data captures what leaves the treatment plant, but household plumbing from before 1986 determines what actually arrives at the tap. In cities where older housing predominates, that gap between system-level and household-level data is widest.
Over half of homes in North Fork 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.
North Fork: Remediation Cost in Perspective
Given current North Fork valuations, the remediation-to-property-value ratio is low — most homeowners are looking at a proportionally modest share that fits within routine financial planning.
Remediation costs in North Fork are relatively low compared to home values. The $300–$2,300 estimated range is a small fraction of median property value. Home values are 54% below the California average.
Protecting Children from Lead in North Fork
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.
After the federal action removing lead-bearing solder from new plumbing took effect, building practice shifted — but 64% of the North Fork inventory predates that line. With aggregate samples near or beyond 0.015 mg/L, an in-home check moves out of the optional column into the standard list.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in North Fork
- 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 Barium can reduce the most common contaminant found in North Fork's water.
- Check your home's plumbing. With 64% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for North Fork, CA