Lake Siskiyou M.w.c.
EPA ID: CA4700549 · 277 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Lake Siskiyou M.w.c. (CA4700549): no EPA violations recorded in the last five years. Federal monitoring records confirm Lake Siskiyou M.w.c. has operated without any EPA violations for the full five-year window - covering every contaminant category and reporting cycle across a service area of approximately 277 residents, with no gaps in the compliance record.
Data: EPA SDWIS
Service Area Map
Coverage area for Lake Siskiyou M.w.c. Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Lake Siskiyou M.w.c. serves a community with a median household income of $63,222 and an estimated 7,800 residents across its service area. Approximately 66% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 86% 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?
Lake Siskiyou M.w.c.'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
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
Lake Siskiyou M.w.c. (EPA ID: CA4700549) is a community water system in California that serves approximately 277 people from groundwater sources.
This system serves ZIP code 96067 in Mount Shasta.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.00089 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.
- 96067 - Mount Shasta
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Lake Siskiyou M.w.c. (CA4700549) on EPA.gov.
Frequently Asked Questions
Is Lake Siskiyou M.w.c. water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Lake Siskiyou M.w.c. 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 Lake Siskiyou M.w.c. serve?
Lake Siskiyou M.w.c. serves approximately 277 people across 1 ZIP code in California.
Where does Lake Siskiyou M.w.c. get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Lake Siskiyou M.w.c. Water Quality Report, CA. https://zipcheckup.com/water-system/ca4700549/
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