Porterville, CA (93258): 1 Health-Based Violation Recorded for Mapped Water Systems
EPA data combined for 2 water systems mapped to this ZIP (largest mapped system: Poplar Commission Service District)
Health-based violation records by water system:
EPA records for the water systems mapped to 93258 in Porterville, CA contain 2 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 1 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 health-based violation 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.
- PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
- Radon EPA Zone 2 - county-level radon potential, not a home measurement.
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Among all monitored safety indicators for 93258 in Porterville, 2 have been rated critical and the high-priority tier holds 0.
Score Breakdown
Overall Home Safety Score: Score unavailable
Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.
Canonical components
Required domains
Coverage: 3 of 4 components and 2 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) CRITICAL
Your Water System
ZIP code 93258 in Porterville, California is mapped to the water system Poplar Commission Service District (EPA ID: CA5410026). This system provides water to approximately 2,200 people from groundwater sources.
There are 2 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Poplar Commission Service District | CA5410026 | 2,200 | Groundwater |
| City of Porterville, | CA5410010 | 63,487 | Groundwater |
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Nearby Water Quality Reports
- 93257 (Porterville) - 3 mi - 41 violations recorded for mapped water systems
- 93270 (Terra Bella) - 5 mi - 1 violation recorded for mapped water systems
- 93267 (Strathmore) - 9 mi - 5 violations recorded for mapped water systems
- 93218 (Ducor) - 10 mi - 1 violation recorded for mapped water systems
- 93247 (Lindsay) - 13 mi - 39 violations recorded for mapped water systems
- 93265 (Springville) - 14 mi
- 93256 (Pixley) - 15 mi
- 93272 (Tipton) - 17 mi
- 93261 (Richgrove) - 17 mi
- 93219 (Earlimart) - 19 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 Poplar Commission Service District (CA5410026) 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.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 93258. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFOS, PFOA, PFPeA, PFBS, PFHxA, PFHpA, PFBA, PFHxS.
Highest measured level: 0.023 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (10) HIGH
Home & Infrastructure (7) MODERATE
Area data suggest possible HVAC concerns - talk to a local expert.
Call (844) 439-2761Paid Partner This is a free service. You will be connected with an independent service provider. We may receive compensation.
Cost & Community (8) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Frequently Asked Questions
Is the tap water in 93258 safe to drink?
EPA SDWIS records 2 violations since 2021 across the water systems mapped to ZIP 93258 (primary system: Poplar Commission Service District), including 1 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 93258's water come from?
The recorded water source for Poplar Commission Service District, a system mapped to ZIP code 93258, is Groundwater. This system serves approximately 2,200 people.
How can I get my water tested in Porterville?
If Poplar Commission Service District 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 93258?
93258 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Tulare County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 93258's water?
Yes, PFAS have been detected in samples from water systems mapped to 93258. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
How to cite this page
ZipCheckup. (2026). Porterville, CA (93258): 1 Health-Based Violation Recorded for Mapped Water Systems. https://zipcheckup.com/report/93258/
@misc{zipcheckup-report-93258,
author = {{ZipCheckup}},
title = {{Porterville, CA (93258): 1 Health-Based Violation Recorded for Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/93258/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 93258
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 93257 | Porterville, CA | 2.8 mi | D | 41 |
| 93270 | Terra Bella, CA | 5.4 mi | B | 1 |
| 93267 | Strathmore, CA | 8.8 mi | N/A | 5 |
| 93218 | Ducor, CA | 10.0 mi | N/A | 1 |
| 93247 | Lindsay, CA | 13.0 mi | C | 39 |
| 93265 | Springville, CA | 13.8 mi | N/A | 0 |
| 93256 | Pixley, CA | 14.9 mi | N/A | 0 |
| 93272 | Tipton, CA | 16.9 mi | N/A | 0 |
| 93261 | Richgrove, CA | 17.2 mi | N/A | 0 |
| 93219 | Earlimart, CA | 18.8 mi | B | 2 |
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