ZipCheckup grade for 96021: A.
Checked records flag no major concern; missing data is unknown.
Corning, CA (96021): 1 Violation Recorded for Mapped Water Systems - 99/100
EPA data for City of Corning
EPA records for the water systems mapped to 96021 in Corning, CA contain 1 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 1 violation (non-health) (since 2021).
- Lead The reported 90th-percentile lead result of 0.0011 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
- Flood 55 cumulative NFIP claim records. Check the current FEMA map for a specific address.
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Score Breakdown
Overall Home Safety Score: 99/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) MODERATE
Your Water System
ZIP code 96021 in Corning, California is mapped to the water system City of Corning (EPA ID: CA5210001). This system provides water to approximately 8,244 people from groundwater sources.
Other Water Quality Reports in California
- 90001 (Los Angeles)
- 90002 (Los Angeles)
- 90003 (Los Angeles)
- 90004 (Los Angeles)
- 90005 (Los Angeles)
- 90006 (Los Angeles)
- 90007 (Los Angeles)
- 90008 (Los Angeles)
- 90009 (Los Angeles)
- 90010 (Los Angeles)
- 90011 (Los Angeles)
- 90012 (Los Angeles)
- 90013 (Los Angeles)
- 90014 (Los Angeles)
- 90015 (Los Angeles)
- 90016 (Los Angeles)
- 90017 (Los Angeles)
- 90018 (Los Angeles)
- 90019 (Los Angeles)
- 90020 (Los Angeles)
Nearby Water Quality Reports
- 96090 (Tehama) - 8 mi
- 96035 (Gerber) - 8 mi
- 96092 (Vina) - 9 mi
- 96055 (Los Molinos) - 10 mi
- 96078 (Proberta) - 11 mi
- 95963 (Orland) - 14 mi - 1 violation recorded for mapped water systems
- 96029 (Flournoy) - 16 mi
- 95927 (Chico) - 16 mi
- 95951 (Hamilton City) - 17 mi
- 96080 (Red Bluff) - 17 mi - 5 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Corning (CA5210001) on EPA.gov.
3 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
UCMR 5 PFAS monitoring: no reportable detections in available records
Available federal UCMR5 records for water systems mapped to ZIP code 96021 show no PFAS detections among the compounds tested, at the program's reporting levels.
The EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR5) required community and non-transient non-community water systems serving 3,300 or more people to test for 29 PFAS compounds and lithium between 2023 and 2025. Systems with no detections at the federal minimum reporting level had no results at or above that reporting level.
Environmental Hazards (11) HIGH
Home & Infrastructure (6) MODERATE
Possible home maintenance concerns - talk to a local expert.
Call (855) 384-4856Paid Partner This is a free service. You will be connected with an independent service provider. We may receive compensation.
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Corning
Based on local data for ZIP 96021, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Home & Flood Insurance
The ZIP code for this report in Corning has 55 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.
Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote
Check Your Flood Zone (Free)FEMA flood map lookup - see if your property is in a flood zone
Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)
Gutter Installation & Repair
The median home in 96021 was built around 1987. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsRoofing Inspection & Repair
Active weather alerts in California increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 96021 safe to drink?
EPA SDWIS records 1 violation since 2021 across the water systems mapped to ZIP 96021 (primary system: City of Corning), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 96021's water come from?
The recorded water source for City of Corning, a system mapped to ZIP code 96021, is Groundwater. This system serves approximately 8,244 people.
How does Corning water compare to the national average?
Corning's Home Safety Score ranks better than 91% of U.S. ZIP codes, and at or above 92% within California.
How can I get my water tested in Corning?
If City of Corning supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 96021 tap water?
The Lead and Copper Rule record selected for 96021 reports a 90th-percentile lead result of 0.00108 mg/L for a water system mapped to this ZIP (record date 2025-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 96021?
96021 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Tehama County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
What does the NFIP claim history show for ZIP 96021?
FEMA records contain 55 flood insurance claims filed in ZIP code 96021; the recorded rated-zone value (the most frequent one if there are several claims) is A, which is claims evidence and may differ from the current FEMA map zone for a property. This is a substantial claim history, but claim count is not a count of distinct events or properties. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Corning, CA (96021): 1 Violation Recorded for Mapped Water Systems - 99/100. https://zipcheckup.com/report/96021/
@misc{zipcheckup-report-96021,
author = {{ZipCheckup}},
title = {{Corning, CA (96021): 1 Violation Recorded for Mapped Water Systems - 99/100}},
year = {2026},
url = {https://zipcheckup.com/report/96021/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 96021
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 96090 | Tehama, CA | 7.8 mi | N/A | 0 |
| 96035 | Gerber, CA | 8.0 mi | N/A | 0 |
| 96092 | Vina, CA | 9.1 mi | N/A | 0 |
| 96055 | Los Molinos, CA | 9.8 mi | N/A | 0 |
| 96078 | Proberta, CA | 10.6 mi | N/A | 0 |
| 95963 | Orland, CA | 14.0 mi | B | 1 |
| 96029 | Flournoy, CA | 15.8 mi | N/A | 0 |
| 95927 | Chico, CA | 15.8 mi | N/A | 0 |
| 95951 | Hamilton City, CA | 16.5 mi | N/A | 0 |
| 96080 | Red Bluff, CA | 17.4 mi | B | 5 |
Nearby ZIP Code Reports
2026 Rankings for Your Area
Overall safety breakdown
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ZIP 96021 scores in the top tier nationally.