Riverstone/rootcreek Water District
EPA ID: CA2010016 · 5,507 people served · 62 ZIP codes
For the full five-year period covered by EPA monitoring, Riverstone/rootcreek Water District has supplied tap water to 5,507 residents with no violations of any type on record.
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 6 (2021) to 120 (2024). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Riverstone/rootcreek Water District Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Riverstone/rootcreek Water District serves a community with a median household income of $65,977 and an estimated 729,213 residents across its service area. Approximately 64% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 61% 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?
Riverstone/rootcreek Water District'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 Madera 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 67th 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. 184 detections recorded. 54 exceed federal EPA limits (4 ppt for PFOA/PFOS). 37 exceed 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
Riverstone/rootcreek Water District (EPA ID: CA2010016) is a community water system in California that serves approximately 5,507 people from groundwater sources.
This system provides water to 62 ZIP codes across 2 communities.
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
This system serves 62 ZIP codes:
93636 · 93637 · 93638 · 93639 · 93650 93701 · 93702 · 93703 · 93704 · 93705 93706 · 93707 · 93708 · 93709 · 93710 93711 · 93712 · 93714 · 93715 · 93716 93717 · 93718 · 93720 · 93721 · 93722 93723 · 93724 · 93725 · 93726 · 93727 93728 · 93729 · 93730 · 93737 · 93740 93741 · 93744 · 93745 · 93747 · 93750 93755 · 93760 · 93761 · 93764 · 93765 93771 · 93772 · 93773 · 93774 · 93775 93776 · 93777 · 93778 · 93779 · 93786 93790 · 93791 · 93792 · 93793 · 93794 93844 · 93888
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Riverstone/rootcreek Water District (CA2010016) on EPA.gov.
Frequently Asked Questions
Is Riverstone/rootcreek Water District water safe to drink?
Based on EPA records, Riverstone/rootcreek Water District has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Riverstone/rootcreek Water District serve?
Riverstone/rootcreek Water District serves approximately 5,507 people across 62 ZIP codes in California.
Where does Riverstone/rootcreek Water District get its water?
The primary water source is groundwater.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.