ZipCheckup grade for 93665: A.
The model grade is high, but the records on this page include findings worth reviewing.
Your top priority: match a filter's certification to the violations (12 health-based violations). Check your ZIP → NSF certified filters
South Dos Palos, CA: 12 Health-Based Violations Recorded for Mapped Water Systems - 99/100
EPA data for City of Dos Palos
Health-based violation records by water system:
- City of Dos Palos (12)
EPA records for the water systems mapped to 93665 in South Dos Palos, CA contain 13 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 12 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 12 health-based violations and 1 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero.
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
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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 (8) CRITICAL
Your Water System
ZIP code 93665 in South Dos Palos, California is mapped to the water system City of Dos Palos (EPA ID: CA2410002). This system provides water to approximately 7,452 people from surface water 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
- 93620 (Dos Palos) - 3 mi - 13 violations recorded for mapped water systems
- 93622 (Firebaugh) - 12 mi - 2 violations recorded for mapped water systems
- 93635 (Los Banos) - 13 mi - 2 violations recorded for mapped water systems
- 95317 (El Nido) - 14 mi
- 93661 (Santa Rita Park) - 15 mi
- 95341 (Merced) - 20 mi - 2 violations recorded for mapped water systems
- 93640 (Mendota) - 20 mi - 2 violations recorded for mapped water systems
- 93610 (Chowchilla) - 23 mi
- 95340 (Merced) - 25 mi - 2 violations recorded for mapped water systems
- 95322 (Gustine) - 25 mi - 2 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 Dos Palos (CA2410002) 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.
Compliance History
UCMR 5 PFAS monitoring: no reportable detections in available records
Available federal UCMR5 records for water systems mapped to ZIP code 93665 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.
Health Risks from Detected Contaminants
Total Trihalomethanes (TTHM)
High RiskEPA reference value: 0.08 mg/L · 11 violations on record
Long-term exposure is associated with increased cancer risk, including bladder cancer; possible reproductive effects
At-risk groups: pregnant women, long-term consumers of chlorinated water
Treatment options (verify a product is certified to reduce this contaminant): granular activated carbon (GAC), carbon block filter, point-of-entry aeration · Find a filter →
Haloacetic Acids (HAA5)
High RiskEPA reference value: 0.06 mg/L · 1 violation on record
Increased risk of cancer
Treatment options (verify a product is certified to reduce this contaminant): granular activated carbon (GAC), carbon block filter, reverse osmosis · Find a filter →
Environmental Hazards (10) 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 (6) OK
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in South Dos Palos
Based on local data for ZIP 93665, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Gutter Installation & Repair
The median home in 93665 was built around 1966. 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 CostsWindow Replacement
The median build year of homes in South Dos Palos is 1966; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
Estimate Your Home Maintenance CostsRoofing Inspection & Repair
Homes built around 1966 may be on their second or third roof. A professional inspection can catch damage before leaks start.
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 93665 safe to drink?
EPA SDWIS records 13 violations since 2021 across the water systems mapped to ZIP 93665 (primary system: City of Dos Palos), including 12 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 93665's water come from?
The recorded water source for City of Dos Palos, a system mapped to ZIP code 93665, is Surface water. This system serves approximately 7,452 people.
How does South Dos Palos water compare to the national average?
South Dos Palos'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 South Dos Palos?
If City of Dos Palos 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.
What is the radon risk for 93665?
93665 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Merced County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
How to cite this page
ZipCheckup. (2026). South Dos Palos, CA: 12 Health-Based Violations Recorded for Mapped Water Systems - 99/100. https://zipcheckup.com/report/93665/
@misc{zipcheckup-report-93665,
author = {{ZipCheckup}},
title = {{South Dos Palos, CA: 12 Health-Based Violations Recorded for Mapped Water Systems - 99/100}},
year = {2026},
url = {https://zipcheckup.com/report/93665/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 93665
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 93620 | Dos Palos, CA | 2.9 mi | A | 13 |
| 93622 | Firebaugh, CA | 12.2 mi | B | 2 |
| 93635 | Los Banos, CA | 13.0 mi | A | 2 |
| 95317 | El Nido, CA | 14.0 mi | N/A | 0 |
| 93661 | Santa Rita Park, CA | 15.4 mi | N/A | 0 |
| 95341 | Merced, CA | 19.9 mi | B | 2 |
| 93640 | Mendota, CA | 20.4 mi | B | 2 |
| 93610 | Chowchilla, CA | 23.2 mi | C | 0 |
| 95340 | Merced, CA | 25.3 mi | B | 2 |
| 95322 | Gustine, CA | 25.3 mi | A | 2 |
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