PlainEnviro

MNIHNAPA WATER SYSTEM

PWSID: 083090047 · Harlem, MT · Serves 220 people

Health Violations

MNIHNAPA WATER SYSTEM has 3 health-based violations out of 3 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served
220
Total Violations
3
Health Violations
3
Source Type
Groundwater

MNIHNAPA WATER SYSTEM (PWSID 083090047) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 220 people in Harlem, MT, and is subject to primacy enforcement by the Montana drinking-water program.

The system's federal compliance record contains 3 total violations, with 3 classified as health-based (MCL exceedances or treatment-technique failures). 3 distinct contaminants have been cited, including E. coli, Arsenic, Fluoride. Recorded violations span 2014–2020.

A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Montana state drinking-water program's public portal.

System Details

EPA ID (PWSID)
083090047
System Type
CWS
Water Source
Groundwater
Location
Harlem, MT
Population Served
220
Health Violations
Yes (3)

What contaminants are in this water system?

Contaminant Violations Health-Based
E. coli 1 1
Arsenic 1 1
Fluoride 1 1

Violation History (3)

Contaminant Health Date
E. coli Yes Aug 1, 2020
Arsenic Yes Feb 1, 2016
Fluoride Yes Jun 2, 2014

Frequently Asked Questions

Is MNIHNAPA WATER SYSTEM water safe to drink?
MNIHNAPA WATER SYSTEM has 3 health-based violations out of 3 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed. The system uses groundwater water as its source.
How many people does MNIHNAPA WATER SYSTEM serve?
MNIHNAPA WATER SYSTEM serves 220 people in Harlem, MT. It is classified as a CWS water system.
What violations does MNIHNAPA WATER SYSTEM have?
MNIHNAPA WATER SYSTEM has 3 total violations on record spanning 2014–2020. 3 are health-based violations involving contaminants exceeding EPA limits.
What contaminants have been found in MNIHNAPA WATER SYSTEM water?
Violations have been recorded for 3 contaminants. The most frequent: E. coli, Arsenic, Fluoride.

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Explore More

Montana Water Systems → All States → Contaminants →

About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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