Mckinleyville, CA: 2 Violations - Home Safety 98/100
1 ZIP code · 3 water systems · Updated
ZipCheckup grade for Mckinleyville: A.
Checked records flag no major concern; missing data is unknown.
In the dataset behind this page, Mckinleyville, CA receives one of the two highest grades; read the compliance history system by system for details.
How Mckinleyville Compares
Data: EPA SDWIS
Mckinleyville Water: The Quick Version
- Your city's water systems recorded 2 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0018 mg/L.
- Homes built before 1986: 43% - older plumbing may contain lead solder.
- Health risk index (ZipCheckup composite of CDC data): 12.81.
Water Systems Serving Mckinleyville
Among 3 systems linked to Mckinleyville, CA, the 3 biggest by population served appear below.
- A
- A
- A
Overview
We track home safety data for 1 ZIP code in Mckinleyville, California, covering 3 community water systems serving approximately 18,792 people. 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. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Mckinleyville: A (98/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Mckinleyville water systems draw from: Groundwater.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0018 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
1 of 1 ZIP records with known zones is in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
| Lead and Copper Rule Revisions | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 95519 | A | 2 | 0 | Humboldt Bay Mwd |
All ZIP Codes in Mckinleyville
- 95519 [A] - 2 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.
CDC Health Data for Mckinleyville
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Mckinleyville
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Mckinleyville's Housing Stock?
With 43% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Homes on the same street in Mckinleyville can differ: one may keep original pre-1986 plumbing while another has been replumbed, so the 1998 median is only a starting point.
Most homes in Mckinleyville were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Protecting Children from Lead in Mckinleyville
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Mckinleyville
Historical NFIP data for Mckinleyville contains 11 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $9,210. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
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.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Mckinleyville, CA