Monitoring Violations ID

City of Lapwai

Name: Water Quality Data for City of Lapwai
Creator: ZipCheckup
License: https://creativecommons.org/licenses/by/4.0/

EPA ID: ID2350011 · 325 people served · 1 ZIP code

While corrective steps may be in progress, City of Lapwai currently shows 2 EPA violations unresolved — serving a population of approximately 325.

Data: EPA SDWIS Last verified: 2026-04-02

A · 94

Avg Safety Score

325

People Served

ZIP Code Served

Violations (5yr)

Groundwater

Water Source

0.001 mg/L

Max Lead Level

Zone 3

Radon Risk · Low

Contaminants Flagged

$190K

Median Home Value in Service Area

Service Area Map

Coverage area for City of Lapwai Source: EPA SDWIS service area boundaries.

Service area boundary — Grade A

Service Area Demographics

$60,885

Median Household Income

2,080

Service Area Population

20%

Disadvantaged Population

50th

Poverty Percentile

30th

Energy Burden Percentile

66%

Pre-1986 Housing

The City of Lapwai serves a community with a median household income of $60,885 and an estimated 2,080 residents across its service area. Approximately 66% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.

💧 Where Does Your Water Come From?

Groundwater

City of Lapwai's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.

Moderate Risk

Source Contamination Risk

70th

Wastewater Discharge Proximity

0th

Superfund Site Proximity

About 2% of homes in Nez Perce County, Idaho rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.

Wastewater Proximity Note: This service area ranks in the 70th percentile nationally for proximity to wastewater discharge points.

Infrastructure Risk

54 yr

Avg Pipe Age

Copper

Pipe Material

16 yr

Est. Remaining Life

Stable

Decay Status

Installed 77% of expected lifespan used End of life

Detected Contaminants

How City of Lapwai compares to EPA limits

What This Means For You

Consumer Confidence Report Rule at 2 mg/L exceeds the EPA maximum of mg/L.

Revised Total Coliform Rule at 2 presence exceeds the EPA maximum of presence.

Total Coliform at 1 presence exceeds the EPA maximum of presence.

Comparable Water Systems

Similar-sized systems in Idaho

City of Albion

325 people

C 6 violations

City of Parker

322 people

C 5 violations

Elk City Water and Sewer Assn

320 people

F 11 violations

Lansing Meadows

320 people

0 violations

Dietrich Water System

332 people

B 4 violations

Cost of Inaction

If water quality issues in this service area are not addressed, the estimated financial impact per household is:

Estimated Healthcare Costs $1,000

Annual per household (CDC est.)

Estimated Cumulative Cost Per Household

5 years

$5,000

10 years

$10,000

20 years

$20,000

Estimates based on published EPA, CDC, and peer-reviewed research. Individual costs vary by household size, property, and health factors. These are conservative lower-bound estimates intended for awareness, not financial advice.

System Overview

City of Lapwai (EPA ID: ID2350011) is a community water system in Idaho that serves approximately 325 people from groundwater sources.

This system serves ZIP code 83540 in Lapwai.

Average Home Safety Score: A (94/100)

Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.

Violation History

5 monitoring/reporting violations recorded. These are procedural violations (missed tests or late reports), not necessarily water safety issues.

Recent Violations

Date	Contaminant	Type	Status
February 18, 2025	Total Coliform	Monitoring	Resolved

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Contaminant	Category	Violations	Health-Based
Consumer Confidence Report Rule	Reporting Failure	2	No
Revised Total Coliform Rule	Microbiological	2	No
Total Coliform	Microbiological	1	No

Lead & Copper

EPA Lead and Copper Rule sampling data for ZIP codes served by this system:

ZIP Code	Lead Level	Exceeds Limit	Sample Date
83540	0.001 mg/L	No	N/A

Radon Risk in Service Area

Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)

Need help with your water quality?

Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400

Find the Right Water Filter

Free tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.

ZIP Codes Served

83540 — Lapwai

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Lapwai (ID2350011) on EPA.gov.

Frequently Asked Questions

Is City of Lapwai water safe to drink?

City of Lapwai has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.

How many people does City of Lapwai serve?

City of Lapwai serves approximately 325 people across 1 ZIP code in Idaho.

Where does City of Lapwai get its water?

The primary water source is groundwater.

Lead Service Line Inventory

Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:

Confirmed Lead

Galvanized — Replacement Required

Unknown Material

332

Confirmed Non-Lead

This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.

Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.

Federal Regulatory Status · 2026Q1

LCRR inventory submission: Reported all required service line types

Latest tap sample on 2021-01-01 did not exceed the federal lead action level.

Population served: 325

Reported to Idaho

Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026

ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.

Learn about lead in drinking water →

Frequently Asked Questions

Is water from City of Lapwai safe to drink? ▼

City of Lapwai earns a A safety grade with 5 violations in the past 5 years. Tap water meets EPA standards for most contaminants.

What contaminants are in City of Lapwai's water? ▼

Detected contaminants include Consumer Confidence Report Rule, Revised Total Coliform Rule, Total Coliform. Each is compared against EPA maximum contaminant levels (MCLs) in the detailed breakdown above.

Should I use a water filter? ▼

Given 3 contaminants above EPA limits, a certified water filter can provide an extra layer of protection. The best type depends on specific contaminants in your water.

How many people does City of Lapwai serve? ▼

City of Lapwai serves approximately 325 people with drinking water across 1 ZIP code.

What is City of Lapwai's water source? ▼

City of Lapwai draws water from groundwater sources. Source type affects which contaminants are most likely to be present.

Is there lead in City of Lapwai's water? ▼

The maximum detected lead level is 0.001 mg/L. This is within EPA action level guidelines.

What is the demographic profile of City of Lapwai's service area? ▼

The City of Lapwai service area has a median household income of $60,885. Demographic data is sourced from the U.S. Census Bureau and EPA EJScreen.

Where does City of Lapwai get its water? ▼

What You Can Do

Test your water

Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →

Check your specific ZIP code

Water quality can vary within a system. View nearest ZIP report →

Contact your utility

City of Lapwai (EPA ID: ID2350011) — request the latest Consumer Confidence Report or ask about specific contaminants.

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