Is Plummer, ID Tap Water Safe to Drink?
Graded F — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
44/100
waterverge.com Plummer, ID — Water Quality Report
Plummer's drinking water received a grade of F (44 out of 100), indicating failing water quality. The city's 5 water systems serve approximately 2,410 residents using groundwater.
Lead levels were measured at 6.1 ppb (90th percentile), which is within EPA limits but above recommended levels. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 1001 violations on record, including 24 health-based violations. 28 remain unresolved.
What to know about Plummer's water
Plummer ranks #128 out of 139 cities in Idaho for water quality, placing it among the lowest-rated in the state.
Plummer relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
While lead levels are within EPA limits, they are above the recommended 5 ppb threshold that health organizations consider ideal. A point-of-use filter adds an extra layer of protection.
As a small community water system, Plummer may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 17 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Plummer, ID water safe to drink?
Plummer's drinking water has significant quality concerns based on EPA testing data. With a grade of F (44/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 5 water systems serve approximately 2,410 residents using groundwater (wells).
Recent water quality updates for Plummer
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Plummer's water quality assessment. Grade: F (44/100).
1 health-based. Contaminants: Groundwater Rule.
Contaminants: TTHM, Total Haloacetic Acids (HAA5).
3 health-based. Contaminants: LEAD AND COPPER RULE REVISIONS.
Federal disaster declaration (FEMA DR-4313). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3244). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Plummer's water supply.
Within EPA limits but above the American Academy of Pediatrics recommended level of 1 ppb. An NSF 53-certified filter provides additional protection.
Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.
Violation history
Plummer's water system has 1,001 total violations on record, including 24 health-based violations. 28 remain unresolved. 17 violations were issued in the last 5 years.
Flood & environmental risk
Benewah County has experienced 4 federally declared disasters since 1964. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.
Where does Plummer's water come from?
Plummer's drinking water comes from groundwater (wells), supplied by 5 water systems serving approximately 2,410 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Plummer residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Plummer's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Run cold water for 30 seconds before drinking, especially in the morning. Lead and copper leach from household plumbing when water sits in pipes.
Plummer's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Plummer
Industrial polluters nearby
Reported releases to surface water by facilities near Plummer, ranked by pounds discharged annually.
Total reported releases to surface water: 0 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
STIMSON LUMBER CO PLUMMER OPERATION PLUMMER, ID83851 | Lead compounds | 0 | 0.5 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D2 — severe droughtBenewah County is currently in D2 (severe drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Benewah County has experienced 4 federally declared disasters since 1964. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Plummer's water supply, we recommend the following filter types.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 6.1 | 15 | ppb | Inorganic | Safe |
| Copper (90th percentile) CopperInorganic A metal that enters drinking water mainly through corrosion of copper plumbing. Small amounts are essential for health, but excess levels are harmful. Health EffectsGastrointestinal distress (nausea, vomiting, diarrhea) at short-term high levels; liver and kidney damage from long-term exposure. EPA Limit1.3 mg/L action level Common SourcesCorrosion of copper household plumbing, erosion of natural deposits. | 1.88 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level trend (90th percentile)
See how Plummer compares by contaminant
Explore where Plummer ranks among all Idaho cities for specific contaminants.
Water source & infrastructure
Where Plummer's water comes from
Plummer's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 2,410 people through 5 water systems.
Water systems serving Plummer
| System Name | PWSID | Population | Source |
|---|---|---|---|
| PLUMMER CITY OF | ID1050021 | 1,034 | GW |
| PLUMMER TRIBAL COMMUNITY | 101612110 | 515 | GW |
| HARRISON CITY OF | ID1280083 | 456 | GW |
| DESMET | 101600001 | 355 | GW |
| COEUR D'ALENE SUB-AGENCY | 101600002 | 50 | GW |
How Plummer compares
Full Idaho rankings →Plummer's score of 44/100 is on par with the average of 43/100 among major Idaho cities. It outscores 6 of 10 nearby cities.
Nearby cities
View Idaho rankings →About Plummer, ID
Learn more about your water
Guides and resources related to Plummer's water quality findings.
Explore water quality across Benewah
Frequently asked questions
Is Plummer, ID tap water safe to drink?
Plummer's water quality earned a grade of F (44/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #128 out of 139 cities tested in Idaho.
What contaminants are in Plummer's water?
Lead was measured at 6.1 ppb (90th percentile). 1001 violations are on record.
How is Plummer's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Plummer?
While lead levels are within EPA limits, a filter adds extra protection. Based on current data, basic filtration should suffice for additional peace of mind.
Where does Plummer's water come from?
Plummer's water is sourced from Groundwater. The city has 5 water systems serving approximately 2,410 residents.
What health violations has Plummer's water system had?
Plummer has 24 health-based violations on record. The most recent violation was recorded in December 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 28 violations remain unresolved.
Is Plummer's groundwater at risk of contamination?
Plummer uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 1001 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Plummer's water compare to other cities?
Plummer ranks #128 out of 139 cities in Idaho (better than 8% of state cities) and #14476 out of 15744 cities nationally (8th percentile). The grade of F reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.