ZipCheckup grade for 83854: C.
A mixed picture - some signals here are worth your attention.
Your top priority: test this home for radon. Check your ZIP → EPA radon map
Post Falls, ID (83854): 2 Health-Based Violations Recorded for Mapped Water Systems - 61/100
EPA data combined for 14 water systems mapped to this ZIP (largest mapped system: City of Post Falls)
Health-based violation records by water system:
- City of Post Falls (1)
- ID1280220 (1)
EPA records for the water systems mapped to 83854 in Post Falls, ID contain 12 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 2 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 2 health-based violations and 10 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.001 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
- Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
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Across water quality, environmental, and home-safety datasets reviewed for 83854 in Post Falls, the high-priority classification covers 1 finding - none crossed the threshold required for a critical designation based on the classification criteria applied.
Score Breakdown
Overall Home Safety Score: 61/100
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) CRITICAL
Your Water System
ZIP code 83854 in Post Falls, Idaho is mapped to the water system City of Post Falls (EPA ID: ID1280147). This system provides water to approximately 20,285 people from groundwater sources.
There are 14 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| City of Post Falls | ID1280147 | 20,285 | Groundwater |
| City of Coeur D Alene | ID1280053 | 54,115 | Groundwater |
| Hayden Lake Irrigation District | ID1280087 | 9,375 | Groundwater |
| City of Rathdrum | ID1280152 | 10,358 | Groundwater |
| Hauser Lake Water Assn Inc. | ID1280084 | 1,575 | Groundwater |
Other Water Quality Reports in Idaho
- 83201 (Pocatello) - 3 violations recorded for mapped water systems
- 83202 (Pocatello) - 22 violations recorded for mapped water systems
- 83203 (Fort Hall)
- 83204 (Pocatello) - 3 violations recorded for mapped water systems
- 83205 (Pocatello)
- 83206 (Pocatello)
- 83209 (Pocatello) - 3 violations recorded for mapped water systems
- 83210 (Aberdeen)
- 83211 (American Falls) - 11 violations recorded for mapped water systems
- 83212 (Arbon)
- 83213 (Arco)
- 83214 (Arimo)
- 83215 (Atomic City)
- 83217 (Bancroft)
- 83218 (Basalt)
- 83220 (Bern)
- 83221 (Blackfoot) - 93 violations recorded for mapped water systems
- 83223 (Bloomington)
- 83226 (Challis)
- 83227 (Clayton)
Nearby Water Quality Reports
- 83877 (Post Falls) - <1 mi
- 99025 (Newman Lake, WA) - 6 mi - 17 violations recorded for mapped water systems
- 83815 (Coeur D Alene) - 7 mi - 1 violation recorded for mapped water systems
- 83814 (Coeur D Alene) - 7 mi - 23 violations recorded for mapped water systems
- 83858 (Rathdrum) - 7 mi - 32 violations recorded for mapped water systems
- 83816 (Coeur D Alene) - 8 mi
- 99027 (Otis Orchards, WA) - 8 mi - 17 violations recorded for mapped water systems
- 99019 (Liberty Lake, WA) - 8 mi - 10 violations recorded for mapped water systems
- 83835 (Hayden) - 10 mi - 5 violations recorded for mapped water systems
- 99016 (Greenacres, WA) - 11 mi - 14 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 Post Falls (ID1280147) on EPA.gov.
4 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 83854.
Detected compounds: PFPeA, PFHxA.
Highest measured level: 0.008 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) MODERATE
Home & Infrastructure (6) OK
Cost & Community (9) 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 83854 safe to drink?
EPA SDWIS records 12 violations since 2021 across the water systems mapped to ZIP 83854 (primary system: City of Post Falls), including 2 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 83854's water come from?
The recorded water source for City of Post Falls, a system mapped to ZIP code 83854, is Groundwater. This system serves approximately 20,285 people.
How does Post Falls water compare to the national average?
Post Falls's Home Safety Score ranks lower than 81% of U.S. ZIP codes, and lower than 84% of ZIP codes within Idaho.
How can I get my water tested in Post Falls?
If City of Post Falls 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 83854 tap water?
The Lead and Copper Rule record selected for 83854 reports a 90th-percentile lead result of 0.001 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 83854?
83854 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Kootenai 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 83854's water?
Yes, PFAS have been detected in samples from water systems mapped to 83854. 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). Post Falls, ID (83854): 2 Health-Based Violations Recorded for Mapped Water Systems - 61/100. https://zipcheckup.com/report/83854/
@misc{zipcheckup-report-83854,
author = {{ZipCheckup}},
title = {{Post Falls, ID (83854): 2 Health-Based Violations Recorded for Mapped Water Systems - 61/100}},
year = {2026},
url = {https://zipcheckup.com/report/83854/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 83854
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 83877 | Post Falls, ID | <1 mi | N/A | 0 |
| 99025 | Newman Lake, WA | 6.0 mi | N/A | 17 |
| 83815 | Coeur D Alene, ID | 6.8 mi | C | 1 |
| 83814 | Coeur D Alene, ID | 7.2 mi | D | 23 |
| 83858 | Rathdrum, ID | 7.5 mi | D | 32 |
| 83816 | Coeur D Alene, ID | 7.8 mi | N/A | 0 |
| 99027 | Otis Orchards, WA | 8.3 mi | N/A | 17 |
| 99019 | Liberty Lake, WA | 8.4 mi | C | 10 |
| 83835 | Hayden, ID | 10.5 mi | C | 5 |
| 99016 | Greenacres, WA | 11.2 mi | C | 14 |
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