Lewiston Water Quality
Idaho
The tap water in Lewiston, Idaho is served by 9 EPA-regulated water systems covering approximately 36,074 people. 45 health-based violations are on record, most recently for 5200 in 2024. Data source: EPA Safe Drinking Water Information System.
Drinking water in Lewiston, Idaho is delivered through 9 EPA-regulated community water systems serving an estimated 36,074 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
The SDWIS record for Lewiston shows 45 total violations across all 9 systems, of which 45 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 5200, 8000, 0700, 1040, 3100. 12 TRI-reporting industrial facilities are also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Idaho drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| LEWISTON ORCHARDS IRRIGATION DIST | 20,000 | 0 | Clean |
| LEWISTON CITY OF | 15,001 | 0 | Clean |
| RED PHEASANT WATER COMPANY LLC | 480 | 1 | Health |
| COUGAR RIDGE WATER & SEWER | 173 | 0 | Clean |
| EAGLES POINTE SUBDIVISION | 110 | 0 | Clean |
| WAHA GLEN WATER DIST | 100 | 0 | Clean |
| EATON MOBILE HOME COURT | 94 | 14 | Health |
| RED ROCK WATER LLC | 60 | 29 | Health |
| VIEW POINT SUBDIVISION | 56 | 1 | Health |
Does this city have health-based water violations?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 8000 | 2019-08-01 |
| 0700 | 2018-11-02 |
| 0700 | 2018-11-02 |
| 0700 | 2018-11-02 |
| 0700 | 2018-11-02 |
| 1040 | 2018-01-01 |
| 1040 | 2017-07-01 |
| 1040 | 2016-10-01 |
| 0700 | 2016-07-20 |
| 1040 | 2016-07-01 |
| 1040 | 2016-04-01 |
| 1040 | 2016-01-01 |
| 1040 | 2015-10-01 |
| 0700 | 2015-07-09 |
| 1040 | 2015-07-01 |
| 1040 | 2015-07-01 |
| 1040 | 2014-10-01 |
| 3100 | 2013-11-01 |
| 3100 | 2013-10-01 |
| 0700 | 2012-11-01 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
| 0700 | 2011-07-21 |
TRI Facilities in Lewiston
| Facility | Total Releases |
|---|---|
| Clearwater Paper Corp-Ppd & Cpd Idaho | 6.1M lbs |
| Federal Cartridge Co-Cci | 1.6M lbs |
| P Kay Metal Lewiston | 891.9K lbs |
| Federal Cartridge Co-Southport | 619.0K lbs |
| Idaho Forest Group-Lewiston | 251.5K lbs |
| Freedom Munitions LLC | 8.8K lbs |
| Coleman Oil Co | 8.0K lbs |
| Freedom Munitions LLC | 4.3K lbs |
| Federal Cartridge Co-Speer | 1.6K lbs |
| Poe Asphalt Paving Inc. | 151 lbs |
Frequently Asked Questions
Is Lewiston, Idaho water safe to drink? ▼
How many water violations does Lewiston have? ▼
What contaminants were found in Lewiston water? ▼
How many water systems serve Lewiston? ▼
Where does Lewiston get its drinking water? ▼
Are there pollution sources near Lewiston? ▼
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.