System Snapshot
Available system-level context
This snapshot shows the identity and context fields currently available for HILO (PWSID HI0000101). Read it with the source links and limitations below.
System identity
- PWSID
- HI0000101
- State
- Hawaii
- Linked communities
- Hilo
- County context
- Not listed in current record
- System type
- Not listed in current record
- Source water
- Groundwater from Panaewa wells, Piihonua wells, Saddle Road Well A, and UH Hilo Well, as listed in the 2025 report
- Population served
- Not listed in current record
- Service connections
- Not listed in current record
- Latest reviewed report
- 2025 report link found
- Data updated
- 2026-07-30
Read these as system-level fields from reviewed public records. Confirm provider and address-specific questions with official utility, city, state, or EPA sources.
Report-Listed Rows
Report-listed rows summarized from the latest reviewed report
2 report-listed rows are summarized for HILO. A listed row is not the same thing as a current advisory or household tap result.
- Report year
- 2025
- Rows summarized
- 2
- Source tables represented
- 2
- Scope
- Past reporting period
| Substance and testing period | Reported value | Range in report | Limit or standard | Source table | Report-printed status |
|---|---|---|---|---|---|
| NitrateTesting period: 2025 | 0.37 ppmLevel Found | ND - 0.37 | MCL: 10; MCLG: 10 | Regulated Contaminant Data Tables - Inorganic ContaminantsPage 3Typical source, as printed: Runoff from fertilizer use; leaching from septic tanks and sewage; erosion of natural deposits | Violation: No, as printed for this report period |
| CopperTesting period: June 2025Sites above action level0/32 | 0.070 ppm90th Percentile | ND - 0.101 | Action Level: 1.3; MCLG: 1.3 | Lead and Copper Rule Compliance - Hilo Water System - June 2025Page 3Typical source, as printed: Corrosion of household plumbing systems; erosion of natural deposits | Violation: No, as printed for this sample period |
Report row
Nitrate
- Range in report
- ND - 0.37 ppm
- Level Found
- 0.37 ppm
- Testing period
- 2025
- Sites above action level
- Not applicable to this summarized entry
- Limit or standard
- MCL: 10; MCLG: 10
- Report-printed status
- Violation: No, as printed for this report period
Report row
Copper
- Range in report
- ND - 0.101 ppm
- 90th Percentile
- 0.070 ppm
- Testing period
- June 2025
- Sites above action level
- 0/32
- Limit or standard
- Action Level: 1.3; MCLG: 1.3
- Report-printed status
- Violation: No, as printed for this sample period
Source report notes
Source: County of Hawaii Department of Water Supply 2025 Hilo Water System Annual Water Quality Report. Retrieved 2026-07-30.
- Applies to: Nitrate
The source prints No in the 2025 violation column. This is reported annual-report evidence. It is not a present-day compliance, advisory, safety, address-level, or household-tap conclusion.
- Applies to: Copper
The preview preserves the 90th-percentile, range, and 0/32 context. This is reported annual-report evidence. It is not a present-day compliance, advisory, safety, address-level, or household-tap conclusion.
Review the linked source report for definitions, footnotes, and official wording.
Violation Records
Violation records shown on this page
This section shows 0 system-scoped violation detail records currently included for HILO. Annual reports and current notices can use different timing and terminology.
No system-scoped violation detail records are included in the available reviewed records for this system. This is not an official compliance finding. Check the official utility, state, or EPA source for current compliance and notice information.
Source notes for this system mention violation-related context, but this page does not currently display separate system-scoped violation detail records.
Important limitation
Profile summary note
This page summarizes public records reviewed by this site. It does not replace official notices, utility updates, or state drinking water information.
System profile limitations
- The bounded preview shows only Nitrate and Copper from physical PDF page 3. Other report content is not reproduced.
- The 2025 report lists the named groundwater wells and says source use can change with supply and demand. This is not a current source allocation, finished-water, or safety conclusion.
- Address-level service can vary. Confirm the serving provider with a bill, account portal, utility, city, or state source.
- The linked official notice, emergency, provider, and state pages can change after the July 30, 2026 review. This profile does not claim that no active notice exists.
- Annual-report values describe the source's printed monitoring period and are not a live status feed, household tap result, or safety conclusion. This summarized profile does not replace official utility or state notices.
- This page shows summarized entries from the available report. It does not include a complete contaminant or violation table.
- Missing fields are not findings. They mean the field is not shown on this page from the records currently available.
- This page summarizes available public records. It may not include every update, notice, or urgent official advisory.
Latest Reviewed Report
Latest reviewed report found by this site
The 2025 report found for HILO summarizes a past reporting period. It is not a live alert page.
2025 Hilo Water System Annual Water Quality Report
Open 2025 water quality report (opens in a new tab)The 2025 report link is available for HILO. Use the linked source report for the full table, definitions, footnotes, and official context. This page includes summarized entries from the available report. They are not a complete copy of the report table.
- Report year
- 2025
- Summarized entries shown
- 2
- Source name
- County of Hawaii Department of Water Supply 2025 Hilo Water System Annual Water Quality Report
- Source URL
- Open report source
- Source retrieved
- 2026-07-30
- Last reviewed
- 2026-07-30
Use the linked source report for the full table, definitions, footnotes, and official context.
Data coverage
This page summarizes selected public records for this public water system. It may not include every report, update, current notice, or address-level service detail.
- Latest reviewed report
- 2025 report link found
- Report-listed rows
- 2 summarized report entries shown
- Detailed violation records
- No detailed system-scoped records displayed
- Population served
- Not listed in current record
- Service connections
- Not listed in current record
- City context
- Hilo
- County context
- Not listed in current record
Local Context
City and state context for this system
HILO is linked here to Hilo for navigation. That relationship does not confirm the provider for a specific address; use a bill, utility portal, or official lookup source.
Linked local context
- Linked communities
- Hilo
- County context
- Not listed in current record
- State context
- Hawaii
Browse related context
County context is shown as a field when it appears in the current record. County pages are not currently available on this site.
Corrections
Suggest a correction or newer source
If you have a newer official report, utility source, or correction, send the source link for review. This helps keep profile summaries tied to public records.
Suggest an updateEvidence
Official sources and report links
Use official federal, state, utility, or report sources before treating a page as final.
Data methodology
Review source hierarchy, missing-data handling, and record limitations.
View Data methodologyData limitations
See why limited records, missing fields, and current notices need careful interpretation.
View Data limitations