Rapelje Water District

Published drinking-water records and contacts for Rapelje Water District. System MT0000313. Review sources and dates; not a real-time water assessment.

System ID: MT0000313
State or territory: MT
Published population served: 70
System type (source code): CWS

Published records and dates

Lead and copper monitoring summaries: 13 — 1993-07-01 – 2025-12-31
Montana selected chemical sample panels: 29 — 2026-01-05 – 2026-09-09

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
Substance	Published 90th percentile	Monitoring period	Source quarter
Lead (PB90)	0.003 mg/L	2023-01-01 – 2025-12-31	2026Q3
Lead (PB90)	0.001 mg/L	2019-01-01 – 2021-12-31	2026Q3
Lead (PB90)	0.004 mg/L	2013-01-01 – 2015-12-31	2026Q3
Lead (PB90)	0.002 mg/L	2012-01-01 – 2014-12-31	2026Q3
Lead (PB90)	0.022 mg/L	2011-01-01 – 2013-12-31	2026Q3
Copper (CU90)	2.36 mg/L	2011-01-01 – 2013-12-31	2026Q3
Lead (PB90)	0.001 mg/L	2011-01-01 – 2011-12-31	2026Q3
Lead (PB90)	0.011 mg/L	2005-01-01 – 2007-12-31	2026Q3

Twelve most recent imported state laboratory records
Substance	Published result	Sample date	Location / source
NITRATE-NITRITE	< .01 mg/L	2026-09-09	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	0.02 mg/L	2026-09-09	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	0.05 mg/L	2026-09-09	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	< .01 mg/L	2026-08-03	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	< .01 mg/L	2026-07-17	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	< .01 mg/L	2026-07-17	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	< .01 mg/L	2026-07-17	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	< .01 mg/L	2026-07-02	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	< .01 mg/L	2026-06-11	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	< .01 mg/L	2026-06-11	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	< .01 mg/L	2026-06-11	EPOUN / Montana selected chemical sample panels
NITRATE-NITRITE	< .01 mg/L	2026-06-01	EPOUN / Montana selected chemical sample panels

State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.

Download state records with source notes (CSV)

Published compliance history

71 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / record	Period	Recorded status	Health-based (EPA classification)	Source quarter
Nitrate Rule / Monitoring, Regular	2024-07-01 – 2024-09-30	Resolved	No	2026Q3
Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R	2018-10-01 – —	Resolved	No	2026Q3
Nitrate Rule / Monitoring, Regular	2018-04-01 – 2018-06-30	Resolved	No	2026Q3
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample	2007-04-01 – 2007-06-30	Archived	Yes	2026Q3
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample	2007-01-01 – 2007-03-31	Archived	Yes	2026Q3
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample	2006-10-01 – 2006-12-31	Archived	Yes	2026Q3
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample	2006-07-01 – 2006-09-30	Archived	Yes	2026Q3
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample	2006-04-01 – 2006-06-30	Archived	Yes	2026Q3
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample	2005-10-01 – 2005-12-31	Archived	Yes	2026Q3
Nitrate Rule / Monitoring, Regular	2004-10-01 – 2004-12-31	Archived	No	2026Q3
Nitrate Rule / Monitoring, Regular	2003-10-01 – 2003-12-31	Archived	No	2026Q3
Nitrate Rule / Monitoring, Regular	2003-07-01 – 2003-09-30	Archived	No	2026Q3
Nitrate Rule / Monitoring, Regular	2003-04-01 – 2003-06-30	Archived	No	2026Q3
Nitrate Rule / Monitoring, Regular	2002-10-01 – 2002-12-31	Archived	No	2026Q3
Nitrate Rule / Monitoring, Regular	2002-04-01 – 2002-06-30	Archived	No	2026Q3
Volatile Organic Chemicals / Monitoring, Regular	2002-01-01 – 2004-12-31	Archived	No	2026Q3
Volatile Organic Chemicals / Monitoring, Regular	2002-01-01 – 2004-12-31	Archived	No	2026Q3
Volatile Organic Chemicals / Monitoring, Regular	2002-01-01 – 2004-12-31	Archived	No	2026Q3
Volatile Organic Chemicals / Monitoring, Regular	2002-01-01 – 2004-12-31	Archived	No	2026Q3
Volatile Organic Chemicals / Monitoring, Regular	2002-01-01 – 2004-12-31	Archived	No	2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
Montana selected chemical sample panels — last successful check: 2026-09-30; latest refresh needs attention; previous records retained

Administrative contact (EPA filing)

Zahn, James A: 406-663-2210

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records