ZipCheckup grade for 99301: B.

This ZIP has a few items worth a quick check.

Water Quality Report
B 79

Pasco, WA (99301): 54 Violations Recorded for Mapped Water Systems - 79/100

EPA data combined for 8 water systems mapped to this ZIP (largest mapped system: Pasco Water Department)

EPA records for the water systems mapped to 99301 in Pasco, WA contain 54 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

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score
B 79/100
Water Quality Concerns 54 non-health-based violation records in EPA data
Lead Risk Below action level 0.0019 mg/L, 90th percentile, sample period ending 2023-12-31
NFIP Claim History Claim records 1 claim
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 54 violations (non-health) (since 2021).
  • Lead The reported 90th-percentile lead result of 0.0019 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • Radon EPA Zone 2 - county-level radon potential, not a home measurement.
  • Flood 1 cumulative NFIP claim record. Claim evidence is historical, not current map coverage.
Contaminant Summary
Violations on record (not health-based)
54 violations 1 risk identified
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
B
ZIP-level Home Safety model score: 79 / 100
Home Safety Score higher than 59% of ZIP codes nationwide
8
Water Systems
115,102
People Served
0
Health Violations (since 2021)
Surface water
Water Source
0.0019 mg/L
Reported Lead Result
Zone 2
County Radon Potential · Moderate
$353K
Median Home Value16% below state median ($421K)

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Score Breakdown

Overall Home Safety Score: 79/100

This is the published model score. Component and domain values are shown independently; they are not added together on this page.

Canonical components

EPA water compliance
72/100
Observed
PFAS MCL screen
100/100
Observed
EPA radon zone
50/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
86/100
Indoor environment
50/100
Outdoor environment
100/100

Coverage: 4 of 4 components and 3 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (8) HIGH

Your Water System

ZIP code 99301 in Pasco, Washington is mapped to the water system Pasco Water Department (EPA ID: WA5366400). This system provides water to approximately 115,102 people from surface water sources.

There are 8 community water systems serving this area.

Water Systems Serving This Area

System Name EPA ID Population Source
Pasco Water Department WA5366400 115,102 Surface water
Community Sewer and Water District WA5305966 1,200 Groundwater
Eaton Park Subdivision WA5322285 70 Groundwater
White Bluff Water Association WA5396100 386 Groundwater
Pasco Heights Domestic Water Assn WA5366350 135 Groundwater

Other Water Quality Reports in Washington

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Pasco Water Department (WA5366400) on EPA.gov.

5 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.

📊 EPA Safe Drinking Water · View source →

UCMR 5 PFAS monitoring: no reportable detections in available records

Available federal UCMR5 records for water systems mapped to ZIP code 99301 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.

📊 EPA UCMR5 · View source →

Health Risks from Detected Contaminants

Fluoride

Moderate Risk

EPA reference value: 4 mg/L (estándar secundario: 2.0 mg/L)

Tooth & bone damage at high levels

At-risk groups: children aged 8 and younger during tooth development

Treatment options (verify a product is certified to reduce this contaminant): reverse osmosis, activated alumina, distillation · Find a filter →

Learn more about Fluoride in drinking water →

📊 EPA SDWIS + SDWA · View source →
Environmental Hazards (11) HIGH
Home & Infrastructure (7) OK
Cost & Community (9) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Pasco

Based on local data for ZIP 99301, 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 Pasco has 1 FEMA flood claim 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)

Service 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 99301 safe to drink?

EPA SDWIS records 54 violations since 2021 across the water systems mapped to ZIP 99301 (primary system: Pasco Water Department), 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 99301's water come from?

The recorded water source for Pasco Water Department, a system mapped to ZIP code 99301, is Surface water. This system serves approximately 115,102 people.

How does Pasco water compare to the national average?

Pasco's Home Safety Score ranks better than 59% of U.S. ZIP codes, and lower than 76% of ZIP codes within Washington.

How can I get my water tested in Pasco?

If Pasco Water Department 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 99301 tap water?

The Lead and Copper Rule record selected for 99301 reports a 90th-percentile lead result of 0.0019 mg/L for a water system mapped to this ZIP (record date 2023-12-31). 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 99301?

99301 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Franklin 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 99301?

FEMA records contain 1 flood insurance claim filed in ZIP code 99301; the recorded rated-zone value (the most frequent one if there are several claims) is C, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.

How to cite this page

APA ZipCheckup. (2026). Pasco, WA (99301): 54 Violations Recorded for Mapped Water Systems - 79/100. https://zipcheckup.com/report/99301/
BibTeX 
@misc{zipcheckup-report-99301,
  author = {{ZipCheckup}},
  title  = {{Pasco, WA (99301): 54 Violations Recorded for Mapped Water Systems - 79/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/99301/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 99301

ZIP Code City, State Distance Grade Violations
99302 Pasco, WA 1.1 mi N/A 0
99336 Kennewick, WA 4.0 mi C 2
99337 Kennewick, WA 5.0 mi C 8
99352 Richland, WA 8.8 mi C 39
99338 Kennewick, WA 10.0 mi C 39
99323 Burbank, WA 10.3 mi N/A 0
99354 Richland, WA 11.0 mi C 0
99353 West Richland, WA 13.5 mi B 22
99363 Wallula, WA 14.8 mi N/A 0
99330 Eltopia, WA 15.6 mi N/A 0

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Coverage: 16/17 risk factors Data sources →
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