Md 73 Quartz Mountain
EPA ID: CA2000690 · 375 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for Md 73 Quartz Mountain (CA2000690): no EPA violations recorded in the last five years. Water monitoring for Md 73 Quartz Mountain: clean, five years, 375 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Md 73 Quartz Mountain Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Md 73 Quartz Mountain serves a community with a median household income of $82,266 and an estimated 12,226 residents across its service area. Approximately 43% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 52% 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?
Md 73 Quartz Mountain'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.
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).
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
Md 73 Quartz Mountain (EPA ID: CA2000690) is a community water system in California that serves approximately 375 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.005 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by CA or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Md 73 Quartz Mountain (CA2000690) on EPA.gov.
Frequently Asked Questions
Is Md 73 Quartz Mountain water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Md 73 Quartz Mountain in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Md 73 Quartz Mountain serve?
Md 73 Quartz Mountain serves approximately 375 people across 2 ZIP codes in California.
Where does Md 73 Quartz Mountain get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Md 73 Quartz Mountain Water Quality Report, CA. https://zipcheckup.com/water-system/ca2000690/
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title = {{Md 73 Quartz Mountain Water Quality Report, CA}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ca2000690/}
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