Public water system · ID2350011
ActiveLapwai City of
At a glance
City of Lapwai (PWSID ID2350011) is an active community water system in Nez Perce County, Idaho. It reports serving 325 people through 332 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
325
Service connections
332
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Lapwai compare with other water systems in Nez Perce County?
By EPA's size categories, City of Lapwai is a very small system (500 people or fewer). Nez Perce County has 25 active public water systems. Its population served is well below the county average of 1,597 people per system, and accounts for 0.8% of the 39,929 people reported by systems filed under the county. Across Idaho, the 1,961 active systems average 899 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Lapwai is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Idaho has 765 active community water systems, 39% of the state's 1,961 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,861 Idaho systems (95%) list groundwater as their primary source.
Who owns and regulates City of Lapwai?
EPA lists City of Lapwai as owned by a local government. The ID state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 6 of the 25 active systems in Nez Perce County (24%) are also owned by a local government.
Does City of Lapwai have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2025. The violations listed here began between January 2025 and February 2025. By type: 12 monitoring and reporting. The contaminants or rules involved are E. coli, Tetrachloroethylene, Styrene and cis-1,2-Dichloroethylene. EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-02-18 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
City of Lapwai: frequently asked questions
Who runs City of Lapwai?
City of Lapwai (PWSID ID2350011) is a community water system owned by a local government. It is regulated by the ID state drinking water program.
How many people does City of Lapwai serve?
City of Lapwai reports serving 325 people through 332 service connections in Nez Perce County, Idaho.
Where does City of Lapwai get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does City of Lapwai have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is City of Lapwai's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find City of Lapwai's water quality report?
As a community water system, City of Lapwai must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Nez Perce County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lewiston Orchards Irrigation Dist | Nez Perce | 20,000 | Community | Groundwater |
| Lewiston City of | Nez Perce | 15,001 | Community | Surface water |
| Clearwater Paper Corporation | Nez Perce | 1,550 | Non-transient non-community | Groundwater |
| Federal Cartridge Company | Nez Perce | 765 | Non-transient non-community | Groundwater |
| Red Pheasant Water Company LLC | Nez Perce | 480 | Community | Groundwater |
| Culdesac City of | Nez Perce | 382 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Lapwai City of, PWSID ID2350011, Idaho”, https://aquacensus.com/water-systems/idaho/lapwai-city-of-id2350011 (data as of October 1, 2026).