San Luis Cabezon Mdwca
EPA ID: NM3501823 · 320 people served · 2 ZIP codes
EPA compliance records for San Luis Cabezon Mdwca show 22 unresolved violations — findings that remain open and are tracked at the federal level, covering a service territory of approximately 320 people.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 3 (2021) to 3 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for San Luis Cabezon Mdwca Source: EPA SDWIS service area boundaries.
Service area boundary — Grade D
Service Area Demographics
The San Luis Cabezon Mdwca serves a community with a median household income of $58,222 and an estimated 12,257 residents across its service area. Approximately 60% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 41% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
San Luis Cabezon Mdwca's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 2% of homes in Sandoval County, New Mexico rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Wastewater Proximity Note: This service area ranks in the 70th percentile nationally for proximity to wastewater discharge points.
Infrastructure Risk
Detected Contaminants
How San Luis Cabezon Mdwca compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 2 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Surface Water Treatment Rule at 7 mg/L exceeds the EPA maximum of mg/L.
Barium at 10 mg/L exceeds the EPA maximum of 2 mg/L.
Stage 2 DBP Rule at 4 mg/L exceeds the EPA maximum of mg/L.
Nickel at 12 mg/L (secondary standard: 2.0 mg/L) exceeds the EPA maximum of 4 mg/L (secondary standard: 2.0 mg/L). Tooth & bone damage at high levels. Consider reverse osmosis filtration.
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
San Luis Cabezon Mdwca (EPA ID: NM3501823) is a community water system in New Mexico that serves approximately 320 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Average Home Safety Score: D (50/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 12, 2025 | Contaminant 0700 | Health-based | Unresolved |
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Unresolved |
| April 8, 2025 | Contaminant 0700 | Health-based | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unresolved |
| October 1, 2024 | Surface Water Treatment Rule | Monitoring | Unresolved |
| July 1, 2024 | Nickel | Health-based | Unresolved |
| July 1, 2024 | Surface Water Treatment Rule | Monitoring | Unresolved |
| April 1, 2024 | Nickel | Health-based | Unresolved |
| January 1, 2024 | Nickel | Health-based | Unresolved |
| November 1, 2023 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| October 1, 2023 | Nickel | Health-based | Unresolved |
| October 1, 2023 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| October 1, 2023 | Surface Water Treatment Rule | Monitoring | Unresolved |
| July 1, 2023 | Nickel | Health-based | Unresolved |
| July 1, 2023 | Surface Water Treatment Rule | Monitoring | Unresolved |
| April 1, 2023 | Barium | Health-based | Resolved |
| January 1, 2023 | Barium | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Nickel | Inorganic | 12 | Yes |
| Barium | Inorganic | 10 | Yes |
| Surface Water Treatment Rule | Treatment Failure | 7 | No |
| Stage 2 DBP Rule | Treatment Failure | 4 | Yes |
| Lead and Copper Rule | Treatment Failure | 3 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | No |
| Contaminant 0700 | Other Violation | 2 | Yes |
| Total Coliform | Microbiological | 1 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
| Revised Total Coliform Rule | Microbiological | 1 | No |
Health Risk Details
Fluoride (EPA limit: 4 mg/L (secondary standard: 2.0 mg/L))
Tooth & bone damage at high levels At-risk groups: children under 8 during tooth development, elderly with compromised bone density, people with kidney disease.
Removal methods: reverse osmosis, activated alumina, distillation. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 87053 | 0.0024 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for San Luis Cabezon Mdwca (NM3501823) on EPA.gov.
Frequently Asked Questions
Is San Luis Cabezon Mdwca water safe to drink?
San Luis Cabezon Mdwca has recorded 19 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does San Luis Cabezon Mdwca serve?
San Luis Cabezon Mdwca serves approximately 320 people across 2 ZIP codes in New Mexico.
Where does San Luis Cabezon Mdwca get its water?
The primary water source is groundwater.
Water Source & Treatment
Where this water originates and how it's treated before reaching your tap.
Source: SAN LUIS CABEZON MDWCA Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility. Treatment and source data are sourced from the utility's published CCR filings.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
San Luis Cabezon Mdwca (EPA ID: NM3501823) — request the latest Consumer Confidence Report or ask about specific contaminants.