Scwa - Laguna/vineyard
EPA ID: CA3410029 · 184,896 people served · 110 ZIP codes
Unlike fully compliant utilities, Scwa - Laguna/vineyard has 2 outstanding EPA violations for approximately 184,896 residents.
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 1 (2022) to 111 (2024). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Scwa - Laguna/vineyard Source: EPA SDWIS service area boundaries.
Service area boundary — Grade B
Service Area Demographics
The Scwa - Laguna/vineyard serves a community with a median household income of $85,327 and an estimated 1,157,512 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: 34% 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?
Scwa - Laguna/vineyard's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Sacramento 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 70th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How Scwa - Laguna/vineyard compares to EPA limits
What This Means For You
Consumer Confidence Report Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 248 detections recorded. 90 exceed federal EPA limits (4 ppt for PFOA/PFOS). 62 exceed state limits.
Chlorine residual was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →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
Scwa - Laguna/vineyard (EPA ID: CA3410029) is a community water system in California that serves approximately 184,896 people from surface water sources.
This system provides water to 110 ZIP codes across 7 communities.
Average Home Safety Score: B (70/100)
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 |
|---|---|---|---|
| October 1, 2024 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| October 1, 2023 | Stage 1 DBP Rule | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting Failure | 3 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Chlorine residual | Disinfectant | 1 | Yes |
Health Risk Details
Chlorine (Residual Disinfectant) (EPA limit: 4 mg/L (MRDL — Maximum Residual Disinfectant Level))
Irritation & DBP formation at high levels; protective at normal treatment levels At-risk groups: people with asthma or chemical sensitivities, kidney dialysis patients (water must be dechlorinated).
Removal methods: granular activated carbon (GAC), KDF media filter, carbon block filter. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
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: 18 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 92 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 110 ZIP codes:
94203 · 94204 · 94205 · 94206 · 94207 94208 · 94209 · 94211 · 94229 · 94230 94232 · 94234 · 94235 · 94236 · 94237 94239 · 94240 · 94244 · 94245 · 94246 94247 · 94248 · 94249 · 94250 · 94252 94254 · 94256 · 94257 · 94258 · 94259 94261 · 94262 · 94263 · 94267 · 94268 94269 · 94271 · 94273 · 94274 · 94277 94278 · 94279 · 94280 · 94282 · 94283 94284 · 94285 · 94286 · 94287 · 94288 94289 · 94290 · 94291 · 94293 · 94294 94295 · 94296 · 94297 · 94298 · 94299 95608 · 95624 · 95632 · 95655 · 95683 95742 · 95757 · 95758 · 95811 · 95812 95813 · 95814 · 95815 · 95816 · 95817 95818 · 95819 · 95820 · 95821 · 95822 95823 · 95824 · 95825 · 95826 · 95827 95828 · 95829 · 95830 · 95831 · 95832 95833 · 95834 · 95835 · 95836 · 95837 95838 · 95840 · 95841 · 95842 · 95851 95852 · 95853 · 95860 · 95864 · 95865 95866 · 95867 · 95887 · 95894 · 95899
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Scwa - Laguna/vineyard (CA3410029) on EPA.gov.
Frequently Asked Questions
Is Scwa - Laguna/vineyard water safe to drink?
Scwa - Laguna/vineyard has recorded 1 health-based violation 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 Scwa - Laguna/vineyard serve?
Scwa - Laguna/vineyard serves approximately 184,896 people across 110 ZIP codes in California.
Where does Scwa - Laguna/vineyard get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Above Current MCL
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS compounds were measured above the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
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.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
- #45 / 100 Highest Exposure Burden (U.S.)
- #16 / 48 Most Unresolved Health Violations (California)
- #5 / 50 Highest Exposure Burden (California)
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
Scwa - Laguna/vineyard (EPA ID: CA3410029) — request the latest Consumer Confidence Report or ask about specific contaminants.