Is Wilder, ID Tap Water Safe to Drink?
Graded A, with 3 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
91.3/100
waterverge.com Wilder, ID — Water Quality Report
Wilder's drinking water received a grade of A (91.3 out of 100), indicating excellent water quality. The city's 2 water systems serve approximately 3,940 residents using groundwater.
Lead levels were measured at 1.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 31 violations on record, including 3 health-based violations. 3 remain unresolved.
What to know about Wilder's water
Wilder ranks #19 out of 139 cities in Idaho for water quality, placing it above average in the state.
Wilder 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.
Water quality score
See methodology →Is Wilder, ID water safe to drink?
Wilder's drinking water has significant quality concerns based on EPA testing data. With a grade of A (91.3/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 3,940 residents using groundwater (wells).
Recent water quality updates for Wilder
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Wilder's water quality assessment. Grade: A (91.3/100).
Contaminants: Asbestos.
Contaminants: TTHM, Total Haloacetic Acids (HAA5).
Federal disaster declaration (FEMA DR-4342). Flood event — may have impacted local water infrastructure.
Contaminants: Lead and Copper Rule.
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 Wilder's water supply.
Well within EPA limits.
Violation history
Wilder's water system has 31 total violations on record, including 3 health-based violations. 3 remain unresolved. 1 violation was issued in the last 5 years.
Flood & environmental risk
Canyon County has experienced 2 federally declared disasters since 2005. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Conway Gulch Below 1St, Dixie Drain Nr Wilder, Boise River Nr Parma, Sand Run Gulch Nr Parma.
Where does Wilder's water come from?
Wilder's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 3,940 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Conway Gulch Below 1St (river), Dixie Drain Nr Wilder (river), Boise River Nr Parma (river), Sand Run Gulch Nr Parma (river).
What Wilder residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Wilder'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.
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 Wilder
Industrial polluters nearby
Reported releases to surface water by facilities near Wilder, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
FORTERRA STRUCTURAL SPECIALTY PRODUCTS - CALDWELL CALDWELL, ID83607 | — | — | 5.9 mi |
SUNROC CORP - NOTUS HOT MIX ASPHALT PLANT CALDWELL, ID83607 | — | — | 4.9 mi |
HOMEDALE BEAM & DECK PLANT HOMEDALE, ID83628 | — | — | 5.2 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Canyon County has experienced 2 federally declared disasters since 2005. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
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. | 1.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Wilder compares by contaminant
Explore where Wilder ranks among all Idaho cities for specific contaminants.
Water source & infrastructure
Where Wilder's water comes from
Wilder'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 3,940 people through 2 water systems.
Water bodies near Wilder
Wilder is located near 4 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Wilder
| System Name | PWSID | Population | Source |
|---|---|---|---|
| PARMA CITY OF | ID3140089 | 2,250 | GW |
| WILDER CITY OF | ID3140138 | 1,690 | GW |
How Wilder compares
Full Idaho rankings →Wilder's score of 91.3/100 is above the average of 43/100 among major Idaho cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Idaho rankings →About Wilder, ID
Learn more about your water
Guides and resources related to Wilder's water quality findings.
Explore water quality across Canyon
Frequently asked questions
Is Wilder, ID tap water safe to drink?
Wilder's water quality earned a grade of A (91.3/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #19 out of 139 cities tested in Idaho.
What contaminants are in Wilder's water?
Lead was measured at 1.0 ppb (90th percentile). 31 violations are on record.
How is Wilder'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 Wilder?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Wilder's water come from?
Wilder's water is sourced from Groundwater. The city has 2 water systems serving approximately 3,940 residents.
What health violations has Wilder's water system had?
Wilder has 3 health-based violations on record. The most recent violation was recorded in January 2023. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 3 violations remain unresolved.
Is Wilder's groundwater at risk of contamination?
Wilder 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 31 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 Wilder's water compare to other cities?
Wilder ranks #19 out of 139 cities in Idaho (better than 86% of state cities) and #1757 out of 15744 cities nationally (89th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.