Arroyo Grande, CA: 37 Violations - Home Safety 62/100
2 ZIP codes · 5 water systems · Updated
ZipCheckup grade for Arroyo Grande: C.
A mixed picture - some signals here are worth your attention.
Your top priority: consider a certified water filter (13 health violations on record). NSF certified filters →
Compared to top-scoring cities in CA, Arroyo Grande lands in the middle tier - some water systems meet standards cleanly, others carry documented violations, and performance can vary significantly across service areas.
How Arroyo Grande Compares
Data: EPA SDWIS
What You Should Know About Arroyo Grande Water
- Your city's water systems recorded 37 violations in the past 5 years.
- Average lead level: 0.017 mg/L - exceeds the EPA action level of 0.015 mg/L.
- Estimated remediation: $1,300 per household.
- CDC health risk index: 11.26.
Who Supplies Your Water in Arroyo Grande
Arroyo Grande, CA is covered by 3 major water utilities out of 5 federally tracked systems, each managing its own pipes, treatment processes, and EPA filings. What a household gets from the tap depends on which provider's system serves that address.
- C
- C
- C
Overview
We track home safety data for 2 ZIP codes in Arroyo Grande, California, covering 5 community water systems serving approximately 32,016 people. The EPA snapshots used for this build directly map water systems to 1 of 2 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 13 health-based violations appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Arroyo Grande: C (62/100)
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
Arroyo Grande water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0170 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 2 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Lead | Inorganic | 50 | 1 |
| Contaminant 1045 | Other | 14 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 4 | 1 |
| Consumer Confidence Report Rule | Reporting | 4 | 1 |
| Stage 1 DBP Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 93420 | C | 37 | 13 | City of Arroyo Grande Utilities Division |
All ZIP Codes in Arroyo Grande
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 Arroyo Grande
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 Arroyo Grande Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for Arroyo Grande Homeowners
At current valuations, Arroyo Grande sits in the low remediation-share tier - the equity impact of fixing documented issues is proportionally minor.
Remediation costs in Arroyo Grande are relatively low compared to home values. The $600–$2,100 estimated range is a small fraction of median property value. Home values are 18% above the California average.
Lead Exposure Risk for Children in Arroyo Grande
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 you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.
<strong>1 ZIP code</strong> (50% of the city) exceeds the EPA lead action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Arroyo Grande
Historical NFIP data for Arroyo Grande contains 40 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $28,657. 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 <strong>$1,300</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.
What You Can Do in Arroyo Grande
- Test your water at home. City-level data shows averages - your tap may differ. Lead testing is especially recommended given the area's lead levels.
- Install a certified water filter. Filters rated for Lead can reduce the most common contaminant found in Arroyo Grande's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Arroyo Grande, CA