San Ysidro, NM: 19 Health Violations — 50/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-06-03
San Ysidro's water safety record falls below average in NM — compliance violations span multiple service areas, and several systems have recorded exceedances that trigger federal notification requirements under the Safe Drinking Water Act.
How San Ysidro Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for San Ysidro Residents
- Your city's water systems recorded 44 violations in the past 5 years.
- Average lead level: 0.0024 mg/L.
- Homes built before 1986: 71% — older plumbing may contain lead solder.
- Estimated remediation: $1,000 per household.
- CDC health risk index: 11.99.
San Ysidro's Water Providers
Across San Ysidro, NM, residential water comes from 3 primary utilities rather than a single consolidated provider. Each system operates independently — managing its own distribution infrastructure, rate schedules, and EPA compliance filings. Federal records track 4 water systems in the area, with these top providers accounting for the majority of residential connections.
Overview
We track water quality and home safety data for 1 ZIP code in San Ysidro, New Mexico, covering 4 community water systems serving approximately 983 people.
1 of 1 ZIP code (100%) have recorded EPA violations. 19 health-based violations documented.
Home Safety Score
Average Home Safety Score for San Ysidro: 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
San Ysidro water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0024 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 |
|---|---|---|---|
| Nickel | Inorganic | 24 | 1 |
| Barium | Inorganic | 20 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 14 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 8 | 1 |
| Lead and Copper Rule | Treatment Technique | 6 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 87053 | D | 44 | 19 | San Luis Cabezon Mdwca |
All ZIP Codes in San Ysidro
- 87053 [D] — 44 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.
San Ysidro Community Health Snapshot
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
What's in San Ysidro's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
San Ysidro Infrastructure Age
With 71% 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
Pre-1986 plumbing is not a rare legacy case in San Ysidro — it's the dominant profile. The median build year of 1974 indicates a housing stock where lead-soldered copper joints are a common structural feature of residences across the city.
Over half of homes in San Ysidro 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.
How Remediation Costs Compare in San Ysidro
Across San Ysidro, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in San Ysidro are relatively low compared to home values. The $300–$2,300 estimated range is a small fraction of median property value. Home values are 14% above the New Mexico average.
San Ysidro: Lead Risk & Vulnerable Populations
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.
Despite citywide averages serving as the standard public reference point, those aggregates cannot resolve what is happening at one specific faucet — and where 71% of San Ysidro homes come from before the solder rule or where utility samples sit at or above the action mark, the gap between system data and faucet reality matters more than it does in lower-exposure communities. An in-home draw closes that gap, with certified filtration through retailer networks available where confirmed faucet results warrant additional measures.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in San Ysidro
- 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 Nickel can reduce the most common contaminant found in San Ysidro's water.
- Check your home's plumbing. With 71% 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 San Ysidro, NM