LEWISTON, ID · Nez Perce County
HATWAI Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of September 1, 1996. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in Nez Perce County, ID.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Idaho’s official records. Always confirm current status with Idaho before making decisions based on this information.
System facts
- System ID (PWSID)
- ID2350005
- System type
- Community Water System
- Population served
- 25
- Service connections
- 12
- Ownership
- privately owned
- Water source
- groundwater (wells)
HATWAI is one of 969 community water systems in Idaho in the 500 or fewer people size category, formerly serving 25 people from groundwater.
EPA's federal records list this system as inactive in 1996; the record below is historical.
As of August 1, 2026, its federal record holds 11 entries between 1984 and 1996, all of which EPA lists as closed. Nothing has been added since 1996.
Of the 11, 7 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Total Coliform Rules, synthetic organic chemicals, and inorganic chemicals.
Violation history
Monitoring, Routine Major (TCR)
—Coliform (TCR)
August 1, 1996 – August 31, 1996
ArchivedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
April 1, 1996 – April 30, 1996
ArchivedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
March 1, 1996 – March 31, 1996
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
May 1, 1995 – May 31, 1995
ArchivedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
July 1, 1994 – July 31, 1994
ArchivedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
September 1, 1993 – September 30, 1993
ArchivedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
January 1, 1993 – December 31, 1995
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
January 1, 1993 – December 31, 1995
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 1993 – December 31, 1995
ResolvedMonitoring, Regular
—2,4,5-TP
January 1, 1993 – December 31, 1995
ResolvedMaximum Contaminant Level Violation, Average
Health-basedNitrate
October 1, 1984 – September 30, 1985
Archived
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| August 1, 1996 – August 31, 1996 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| April 1, 1996 – April 30, 1996 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
| March 1, 1996 – March 31, 1996 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
| May 1, 1995 – May 31, 1995 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| July 1, 1994 – July 31, 1994 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
| September 1, 1993 – September 30, 1993 | Monitoring, Repeat Minor (TCR) | Coliform (TCR) | — | Archived |
| January 1, 1993 – December 31, 1995 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Resolved |
| January 1, 1993 – December 31, 1995 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Resolved |
| January 1, 1993 – December 31, 1995 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| January 1, 1993 – December 31, 1995 | Monitoring, Regular | 2,4,5-TP | — | Resolved |
| October 1, 1984 – September 30, 1985 | Maximum Contaminant Level Violation, Average | Nitrate | Health-based | Archived |
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
Enforcement actions
No enforcement actions on record for this system.
Last known contact on file (system is inactive)
Not on record
208-743-1005
LEWISTON, ID 83501