Lolo Water and Sewer District
EPA ID: MT0000278 · 3,315 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for Lolo Water and Sewer District (MT0000278): 2 violations on record since 2021. Looking at the EPA enforcement file for Lolo Water and Sewer District, 2 violations are listed in the dataset, and none is recorded as open for the 3,315 people in its service area.
Data: EPA SDWIS
Service Area Map
Coverage area for Lolo Water and Sewer District Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Lolo Water and Sewer District have a median household income of $75,710 and about 20,567 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 48% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Lolo Water and Sewer District's water is classified in EPA records as a groundwater source. 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.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Montana
System Overview
Lolo Water and Sewer District (EPA ID: MT0000278) is a community water system in Montana that serves approximately 3,315 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 2 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| January 1, 2024 | Nitrate-Nitrite | Non-health-based | Resolved |
| July 1, 2022 | Consumer Confidence Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Nitrate-Nitrite | Monitoring & Reporting | 1 | No |
| Consumer Confidence Rule | Other (notice or report rule) | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 mg/L | No | 2027-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
3 of 3 ZIP records with known zones are in EPA Radon Zone 1.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by MT or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Lolo Water and Sewer District (MT0000278) on EPA.gov.
Frequently Asked Questions
Is Lolo Water and Sewer District water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Lolo Water and Sewer District; its 2 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Lolo Water and Sewer District serve?
Lolo Water and Sewer District serves approximately 3,315 people across 3 ZIP codes in Montana.
Where does Lolo Water and Sewer District get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Lolo Water and Sewer District (MT): 2 EPA Violations. https://zipcheckup.com/water-system/mt0000278/
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author = {{ZipCheckup}},
title = {{Lolo Water and Sewer District (MT): 2 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/mt0000278/}
}
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
Lolo Water and Sewer District (EPA ID: MT0000278) - request the latest Consumer Confidence Report or ask about specific contaminants.