Hi Desert Mwc
EPA ID: CA3600123 · 112 people served · 2 ZIP codes
Although compliance varies widely among water utilities nationally, Hi Desert Mwc stands out with zero EPA violations over five consecutive monitoring years, delivering safe tap water to 112 residents and showing no enforcement activity across the entire reporting span.
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 14 (2024) to 16 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Hi Desert Mwc Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Hi Desert Mwc serves a community with a median household income of $59,338 and an estimated 33,982 residents across its service area. Approximately 75% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 51% 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?
Hi Desert Mwc'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 1% of homes in San Bernardino County, California rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 4 detections recorded. 1 exceeds federal EPA limits (4 ppt for PFOA/PFOS). 1 exceeds state limits.
Comparable Water Systems
Similar-sized systems in California
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
Hi Desert Mwc (EPA ID: CA3600123) is a community water system in California that serves approximately 112 people from groundwater sources.
This system provides water to 2 ZIP codes across 1 community.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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 Hi Desert Mwc (CA3600123) on EPA.gov.
Frequently Asked Questions
Is Hi Desert Mwc water safe to drink?
Based on EPA records, Hi Desert Mwc has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Hi Desert Mwc serve?
Hi Desert Mwc serves approximately 112 people across 2 ZIP codes in California.
Where does Hi Desert Mwc get its water?
The primary water source is groundwater.