Quincy, CA: 1 Violation - Home Safety 82/100
1 ZIP code · 1 water system · Updated
ZipCheckup grade for Quincy: B.
This ZIP has a few items worth a quick check.
Quincy, CA carries a grade in ZipCheckup's upper tier; any health-based violations on record should be checked per water system.
How Quincy Compares
Data: EPA SDWIS
Quincy Water: The Quick Version
- Water systems mapped to your city have 1 violation on record since 2021.
- Average of reported 90th-percentile lead results: 0.0011 mg/L.
- Homes built before 1986: 71% - older plumbing may contain lead solder.
- Estimated remediation: $500 per household.
- Health risk index (ZipCheckup composite of CDC data): 14.29.
Water Systems Serving Quincy
Federal drinking water data connect ZIP codes in Quincy, CA to a count of 1 system, and the list on this page shows one of them. A listing reflects that link, not proof of which system serves a given street.
- B
Overview
We track home safety data for 1 ZIP code in Quincy, California, covering 1 community water system serving approximately 6,288 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 Quincy: B (82/100)
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
Quincy water systems draw from: Groundwater.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0011 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 2.
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 Revisions | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 95971 | B | 1 | 0 | American Valley Csd |
All ZIP Codes in Quincy
- 95971 [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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
CDC Health Data for Quincy
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 Quincy
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Quincy's Housing Stock?
With 71% 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
By Census estimates, roughly half or more of the homes in Quincy were built before 1986; the median build year is 1977.
Over half of homes in Quincy were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Quincy: Remediation Cost in Perspective
Measured against the median home value, the estimated cost of fixing the issues flagged for Quincy lands in the lowest of the three tiers this page uses.
Estimated remediation costs in Quincy can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 58% below the California average.
Protecting Children from Lead in Quincy
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 Quincy
Historical NFIP data for Quincy contains 12 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $7,508. 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. The $500 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
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 Quincy, CA