Santa Rosa, CA: 3 Health Violations - Home Safety 96/100
8 ZIP codes · 17 water systems · Updated
ZipCheckup grade for Santa Rosa: A.
No federal data flags a major home-safety concern for this ZIP.
How does Santa Rosa tap water hold up under EPA scrutiny? Above average for CA - documented violations are uncommon and the safety grade reflects a clean overall record.
How Santa Rosa Compares
Data: EPA SDWIS
Water Quality Map: Santa Rosa, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
How ZIP codes in Santa Rosa score across all safety grades.
What You Should Know About Santa Rosa Water
- Your city's water systems recorded 13 violations in the past 5 years.
- Average lead level: 0.0035 mg/L.
- Homes built before 1986: 64% - older plumbing may contain lead solder.
- Estimated remediation: $1,457 per household.
- CDC health risk index: 11.32.
Who Supplies Your Water in Santa Rosa
17 water systems are tracked federally in Santa Rosa, CA. The top 3 providers collectively serve most residential addresses, but because they operate independently, infrastructure maintenance standards and compliance histories differ from one service zone to another.
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Overview
We track home safety data for 8 ZIP codes in Santa Rosa, California, covering 17 community water systems serving approximately 210,635 people. The EPA snapshots used for this build directly map water systems to 6 of 8 ZIP codes.
5 of 6 ZIP codes with a reported violation count in the available EPA record (83%) have recorded EPA violations. 3 health-based violations appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Santa Rosa: A (96/100)
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
Santa Rosa water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0035 mg/L (EPA action level: 0.015 mg/L)
- 0 of 6 ZIP codes with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 8 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Technique | 13 | 3 |
| Barium | Inorganic | 6 | 3 |
| Stage 1 DBP Rule | Treatment Technique | 6 | 1 |
| Consumer Confidence Report Rule | Reporting | 5 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 95404 | A | 11 | 3 | City of Santa Rosa, |
| 95405 | A | 3 | 2 | City of Santa Rosa, |
| 95409 | A | 3 | 1 | City of Santa Rosa, |
| 95407 | A | 2 | 0 | City of Santa Rosa, |
| 95403 | A | 1 | 0 | City of Santa Rosa, |
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 95401 | A | City of Santa Rosa, | 175,396 |
All ZIP Codes in Santa Rosa
- 95401 [A]
- 95402
- 95403 [A] - 1 violation
- 95404 [A] - 11 violations ⚠
- 95405 [A] - 3 violations ⚠
- 95406
- 95407 [A] - 2 violations
- 95409 [A] - 3 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.
Health Outcomes in Santa Rosa
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
Top Contaminants in Santa Rosa Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Santa Rosa
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
What does a median build year of 1977 mean for water safety in Santa Rosa? It means the majority of the city's residential plumbing was installed before 1986, when lead solder was federally banned, and a large share may predate 1970, when lead pipes were commonly used - making plumbing age a central variable in household-level lead risk across much of the city.
Over half of homes in Santa Rosa 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.
Cost Context: What Remediation Means for Santa Rosa Homeowners
Setting Santa Rosa remediation figures against its property market, the resulting ratio sits comfortably in the low tier - a classification that reflects the kind of household financial position where most homeowners can identify documented issues, schedule the work, and absorb the cost without it registering as a significant budget disruption.
Remediation costs in Santa Rosa are relatively low compared to home values. The $971–$2,100 estimated range is a small fraction of median property value. Home values are 2% above the California average.
Lead Exposure Risk for Children in Santa Rosa
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.
If 64% of the Santa Rosa inventory comes from before the federal ban on lead-bearing solder - and if utility samples sit at or near 0.015 mg/L - the gap between citywide averages and one specific faucet becomes a practical concern rather than a theoretical one. That is why one-home reads exist as a separate measurement. A certified filter through retailer networks addresses confirmed exposure where it appears in a household.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Santa Rosa
Historical NFIP data for Santa Rosa contains 128 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $18,963. Among ZIP codes with claim records, 57% 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 <strong>$1,457</strong> 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 Santa Rosa, CA