Report identity and source
- Public water system
- ANACONDA WATER DEPARTMENT
- PWSID
- MT0000016
- Report year
- 2025
- Official publisher/source
- Anaconda 2025 Annual Drinking Water Quality Report
- Source retrieved
- 2026-08-12
- Last reviewed
- 2026-08-13
Reviewed Report Rows
Ten reviewed rows from the 2025 report
Measurements, ranges, units, limit fields, status cells, likely-source wording, and table names remain scoped to the named annual-report rows.
Lead and Copper
| Report row | Reported measurement | Sites above action level | Testing period in report | Unit | Limit or standard field | Status printed for this row | Source page | Source table |
|---|---|---|---|---|---|---|---|---|
| Copper | 90th Percentile: 0.92 | 0 | 2025 | ppm | MCLG: 1.3 ppm; Action Level (AL): 1.3 ppm | Violation: N (row sample period) | 3 | Lead and Copper |
| Lead | 90th Percentile: 8 | 0 | 2025 | ppb | MCLG: 0 ppb; Action Level (AL): 15 ppb | Violation: N (row sample period) | 3 | Lead and Copper |
Report rowCopper
Reported measurement90th Percentile: 0.92
Sites above action level0
Testing period in report2025
Unitppm
Limit or standard fieldMCLG: 1.3 ppm; Action Level (AL): 1.3 ppm
Status printed for this rowViolation: N (row sample period)
Source page3
Source tableLead and Copper
Report rowLead
Reported measurement90th Percentile: 8
Sites above action level0
Testing period in report2025
Unitppb
Limit or standard fieldMCLG: 0 ppb; Action Level (AL): 15 ppb
Status printed for this rowViolation: N (row sample period)
Source page3
Source tableLead and Copper
Regulated Contaminants - Disinfectants and Disinfection By-Products
| Report row | Reported measurement | Range in report | Testing period in report | Unit | Limit or standard field | Status printed for this row | Source page | Source table |
|---|---|---|---|---|---|---|---|---|
| Chlorine | Highest Level Detected: 0.50 | .5 - .5 | 2025 | ppm | MRDLG: 4 ppm; MRDL: 4 ppm | Violation: N (row sample period) | 4 | Regulated Contaminants |
| Haloacetic Acids (HAA5) | Highest Level Detected: 0 | ND - .25 | 2025 | ppb | MCLG: No goal for the total; MCL: 60 ppb | Violation: N (row sample period) | 4 | Regulated Contaminants |
| Total Trihalomethanes (TTHM) | Highest Level Detected: 2 | 1.6 - 2.2 | 2025 | ppb | MCLG: No goal for the total; MCL: 80 ppb | Violation: N (row sample period) | 4 | Regulated Contaminants |
Report rowChlorine
Reported measurementHighest Level Detected: 0.50
Range in report.5 - .5
Testing period in report2025
Unitppm
Limit or standard fieldMRDLG: 4 ppm; MRDL: 4 ppm
Status printed for this rowViolation: N (row sample period)
Source page4
Source tableRegulated Contaminants
Report rowHaloacetic Acids (HAA5)
Reported measurementHighest Level Detected: 0
Range in reportND - .25
Testing period in report2025
Unitppb
Limit or standard fieldMCLG: No goal for the total; MCL: 60 ppb
Status printed for this rowViolation: N (row sample period)
Source page4
Source tableRegulated Contaminants
Report rowTotal Trihalomethanes (TTHM)
Reported measurementHighest Level Detected: 2
Range in report1.6 - 2.2
Testing period in report2025
Unitppb
Limit or standard fieldMCLG: No goal for the total; MCL: 80 ppb
Status printed for this rowViolation: N (row sample period)
Source page4
Source tableRegulated Contaminants
Regulated Contaminants - Inorganic Contaminants
| Report row | Reported measurement | Range in report | Testing period in report | Unit | Limit or standard field | Status printed for this row | Source page | Source table |
|---|---|---|---|---|---|---|---|---|
| Arsenic | Level detected: 2 | 2 - 2 | 2025 report period | ppb | MCL: 10 ppb | Violation: N (row report period) | 4 | Detected Contaminants |
| Barium | Highest Level Detected: 0.0280 | .028 - .028 | 2022 | ppm | MCLG: 2 ppm; MCL: 2 ppm | Violation: N (row sample period) | 4 | Detected Contaminants |
| Chromium | Highest Level Detected: 1 | 1 - 1 | 2022 | ppb | MCLG: 100 ppb; MCL: 100 ppb | Violation: N (row sample period) | 4 | Detected Contaminants |
| Fluoride | Highest Level Detected: 0.50 | .5 - .5 | 2022 | ppm | MCLG: 4 ppm; MCL: 4 ppm | Violation: N (row sample period) | 4 | Detected Contaminants |
| Nitrate (measured as nitrogen) | Level detected: 0.25 | 0.25 - 0.25 | 2025 report period | ppm | MCL: 10 ppm | Violation: N (row report period) | 4 | Detected Contaminants |
Report rowArsenic
Reported measurementLevel detected: 2
Range in report2 - 2
Testing period in report2025 report period
Unitppb
Limit or standard fieldMCL: 10 ppb
Status printed for this rowViolation: N (row report period)
Source page4
Source tableDetected Contaminants
Report rowBarium
Reported measurementHighest Level Detected: 0.0280
Range in report.028 - .028
Testing period in report2022
Unitppm
Limit or standard fieldMCLG: 2 ppm; MCL: 2 ppm
Status printed for this rowViolation: N (row sample period)
Source page4
Source tableDetected Contaminants
Report rowChromium
Reported measurementHighest Level Detected: 1
Range in report1 - 1
Testing period in report2022
Unitppb
Limit or standard fieldMCLG: 100 ppb; MCL: 100 ppb
Status printed for this rowViolation: N (row sample period)
Source page4
Source tableDetected Contaminants
Report rowFluoride
Reported measurementHighest Level Detected: 0.50
Range in report.5 - .5
Testing period in report2022
Unitppm
Limit or standard fieldMCLG: 4 ppm; MCL: 4 ppm
Status printed for this rowViolation: N (row sample period)
Source page4
Source tableDetected Contaminants
Report rowNitrate (measured as nitrogen)
Reported measurementLevel detected: 0.25
Range in report0.25 - 0.25
Testing period in report2025 report period
Unitppm
Limit or standard fieldMCL: 10 ppm
Status printed for this rowViolation: N (row report period)
Source page4
Source tableDetected Contaminants
Copper
- Likely source listed in report
- Erosion of natural deposits; Leaching from wood preservatives; Corrosion of household plumbing systems.
- Source table
- Lead and Copper
Preservation and source notes
- Source-printed values and Violation N are preserved without a current compliance or household-tap conclusion. Annual-report values describe only the cited report sample period. They are not a current compliance feed, advisory determination, address-level result, household-tap result, or safety conclusion.
Lead
- Likely source listed in report
- Corrosion of household plumbing systems; Erosion of natural deposits.
- Source table
- Lead and Copper
Preservation and source notes
- Source-printed values and Violation N are preserved without a current compliance or household-tap conclusion. Annual-report values describe only the cited report sample period. They are not a current compliance feed, advisory determination, address-level result, household-tap result, or safety conclusion.
Chlorine
- Likely source listed in report
- Water additive used to control microbes.
- Source table
- Regulated Contaminants
Preservation and source notes
- Annual-report values describe only the cited report sample period. They are not a current compliance feed, advisory determination, address-level result, household-tap result, or safety conclusion.
- Footnote: The source defines this highest level as the highest running annual average calculated each month during the CCR year; the range is the min/max of the monthly average during the CCR year.
Haloacetic Acids (HAA5)
- Likely source listed in report
- By-product of drinking water disinfection.
- Source table
- Regulated Contaminants
Preservation and source notes
- Annual-report values describe only the cited report sample period. They are not a current compliance feed, advisory determination, address-level result, household-tap result, or safety conclusion.
Total Trihalomethanes (TTHM)
- Likely source listed in report
- By-product of drinking water disinfection.
- Source table
- Regulated Contaminants
Preservation and source notes
- Annual-report values describe only the cited report sample period. They are not a current compliance feed, advisory determination, address-level result, household-tap result, or safety conclusion.
Arsenic
- Likely source listed in report
- Not listed for this report row
- Source table
- Detected Contaminants
Preservation and source notes
- N is not paraphrased as present-day compliance or safety. Annual-report values describe only the cited report sample period. They are not a current compliance feed, advisory determination, address-level result, household-tap result, or safety conclusion.
Barium
- Likely source listed in report
- Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.
- Source table
- Detected Contaminants
Preservation and source notes
- Annual-report values describe only the cited report sample period. They are not a current compliance feed, advisory determination, address-level result, household-tap result, or safety conclusion.
Chromium
- Likely source listed in report
- Discharge from steel and pulp mills; Erosion of natural deposits.
- Source table
- Detected Contaminants
Preservation and source notes
- Annual-report values describe only the cited report sample period. They are not a current compliance feed, advisory determination, address-level result, household-tap result, or safety conclusion.
Fluoride
- Likely source listed in report
- Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories.
- Source table
- Detected Contaminants
Preservation and source notes
- Annual-report values describe only the cited report sample period. They are not a current compliance feed, advisory determination, address-level result, household-tap result, or safety conclusion.
Nitrate (measured as nitrogen)
- Likely source listed in report
- Not listed for this report row
- Source table
- Detected Contaminants
Preservation and source notes
- 25 ppm, range 0.25 - 0.25, MCL 10 ppm, source-printed Violation N. N is not paraphrased as present-day compliance or safety. Annual-report values describe only the cited report sample period. They are not a current compliance feed, advisory determination, address-level result, household-tap result, or safety conclusion.
Report Context
Context attributed to the source report
These summaries are limited to the named annual report and do not assert live system, compliance, or advisory status.
Report identity
The cover identifies Anaconda Water Department, PWSID MT0000016, and the January 1 through December 31, 2025 reporting period.
Source-water context
The report classifies the system as ground water and lists six wells. This source context does not establish a provider for a particular address.
Reviewed non-result material
Pages 1 through 3 include contact, health, source-water, and definition material; page 5 contains only the continuation of the official UCMR data-finder link. These sections add no further local result rows.
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Source-period disclosures kept separate from live status
These items preserve report wording and scope. They do not create violation records, advisory records, or a current-status conclusion.
Annual report is not a live status page
The result rows describe collection years printed in the 2025 annual report. They do not establish current compliance, current advisories, conditions at an address, household-tap results, or water safety.
Current status is not asserted. Check official current sources for notices or instructions.
Unregulated monitoring remains narrative context
The report states that unregulated contaminants were sampled in 2024 with all analytes under detection limits, but prints no analyte rows. The narrative is not converted into structured results or a current-status conclusion.
Current status is not asserted. Check official current sources for notices or instructions.
Evidence
Official report and system source paths
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Utility website
Report identity and field provenance
- Official annual report document: Anaconda 2025 Annual Drinking Water Quality Report Official DOCX visually reviewed through all five rendered pages; source SHA-256 5c8288368ebe6accc2f0561cb14a290f83074552b84f5c08656e7b858c0cbe43.
- Anaconda Water Department and PWSID MT0000016 binding: Anaconda 2025 Annual Drinking Water Quality Report The cover prints Anaconda Water Department and MT0000016 together.
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Methodology
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