HARLEM CITY OF
PWSID: MT0000239 · Harlem, MT · Serves 820 people
According to EPA Safe Drinking Water Information System (SDWIS), HARLEM CITY OF (PWSID MT0000239) in Harlem, MT is listed as a CWS water system covering about 820 people. The same extract lists 71 health-based violation records spanning 2016-2025. Those 71 health-based rows for HARLEM CITY OF cover contaminants such as TTHM, Total Haloacetic Acids (HAA5), Long Term 2 Enhanced Surface Water Treatment Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
HARLEM CITY OF has 71 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 4 distinct EPA contaminant codes appear in this system's record, including TTHM, Total Haloacetic Acids (HAA5), Long Term 2 Enhanced Surface Water Treatment Rule. Recorded violations span 2016–2025. Day-to-day primacy enforcement for this system runs through the Montana drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current 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)
- MT0000239
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Harlem, MT
- Population Served
- 820
- Health Violations
- Yes (71)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 63 | 63 |
| Total Haloacetic Acids (HAA5) | 5 | 5 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 2 | 2 |
| Revised Total Coliform Rule | 1 | 1 |
Violation History (71)
| Contaminant | Health | Date |
|---|---|---|
| TTHM | Yes | Oct 1, 2025 |
| TTHM | Yes | Oct 1, 2025 |
| Revised Total Coliform Rule | Yes | Aug 26, 2025 |
| TTHM | Yes | Jul 1, 2025 |
| TTHM | Yes | Jul 1, 2025 |
| TTHM | Yes | Jan 1, 2025 |
| TTHM | Yes | Oct 1, 2024 |
| TTHM | Yes | Oct 1, 2024 |
| TTHM | Yes | Oct 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2024 |
| Long Term 2 Enhanced Surface Water Treatment Rule | Yes | Jul 1, 2024 |
| Long Term 2 Enhanced Surface Water Treatment Rule | Yes | Jul 1, 2024 |
| TTHM | Yes | Jul 1, 2024 |
| TTHM | Yes | Jul 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| TTHM | Yes | Oct 1, 2023 |
| TTHM | Yes | Oct 1, 2023 |
| TTHM | Yes | Oct 1, 2023 |
| TTHM | Yes | Jul 1, 2023 |
| TTHM | Yes | Jul 1, 2023 |
| TTHM | Yes | Apr 1, 2023 |
| TTHM | Yes | Apr 1, 2023 |
| TTHM | Yes | Apr 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Oct 1, 2022 |
| TTHM | Yes | Oct 1, 2022 |
| TTHM | Yes | Oct 1, 2022 |
| TTHM | Yes | Jul 1, 2022 |
| TTHM | Yes | Jul 1, 2022 |
| TTHM | Yes | Jul 1, 2022 |
| TTHM | Yes | Apr 1, 2022 |
| TTHM | Yes | Apr 1, 2022 |
| TTHM | Yes | Apr 1, 2022 |
| TTHM | Yes | Jan 1, 2022 |
| TTHM | Yes | Jan 1, 2022 |
| TTHM | Yes | Oct 1, 2021 |
| TTHM | Yes | Jul 1, 2021 |
| TTHM | Yes | Apr 1, 2021 |
| TTHM | Yes | Jan 1, 2021 |
| TTHM | Yes | Oct 1, 2020 |
| TTHM | Yes | Jul 1, 2020 |
| TTHM | Yes | Apr 1, 2020 |
| TTHM | Yes | Jan 1, 2020 |
| TTHM | Yes | Oct 1, 2019 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Jan 1, 2019 |
| TTHM | Yes | Oct 1, 2018 |
| TTHM | Yes | Jul 1, 2018 |
| TTHM | Yes | Apr 1, 2018 |
| TTHM | Yes | Jan 1, 2018 |
| TTHM | Yes | Oct 1, 2017 |
| TTHM | Yes | Jul 1, 2017 |
| TTHM | Yes | Apr 1, 2017 |
| TTHM | Yes | Jan 1, 2017 |
| TTHM | Yes | Jul 1, 2016 |
| TTHM | Yes | Apr 1, 2016 |
| TTHM | Yes | Jan 1, 2016 |
Frequently Asked Questions
What does EPA SDWIS list for HARLEM CITY OF?
How many people does HARLEM CITY OF serve?
What violations does HARLEM CITY OF have?
What contaminants have been found in HARLEM CITY OF water?
Compare beyond Montana
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest HARLEM CITY OF on cumulative violation count (71) and EPA-reported population served (820). Violation-count peers include MORNING STAR PUBLIC WATER AUTHORITY, ARMONA COMMUNITY SERVICES DIST, SALEM WATER WORKS. Population peers include GRAND PORTAGE, EMERSON, VILLAGE OF, EMMONAK WATER SYSTEM.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
HARLEM CITY OF (MT0000239) is drawn from EPA SDWIS. Nearby county systems in this extract include FORT BELKNAP AGENCY WATER SYSTEM; HAYS/WHITE COW CANYON WS; MNIHNAPA WATER SYSTEM; PERRYS WATER SERVICE. Health-based rows (71 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.