Is Worley, ID Tap Water Safe to Drink?
Graded F — but Lead was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
36/100
waterverge.com Worley, ID — Water Quality Report
Worley's drinking water received a grade of F (36 out of 100), indicating failing water quality. The city's 4 water systems serve approximately 1,416 residents using groundwater.
Lead levels were measured at 17.0 ppb (90th percentile), which exceeds the EPA action level of 15 ppb. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 138 violations on record, including 24 health-based violations. 19 remain unresolved.
What to know about Worley's water
Worley ranks #138 out of 139 cities in Idaho for water quality, placing it among the lowest-rated in the state.
Worley 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.
Lead levels exceed the EPA action level of 15 ppb, which typically indicates aging lead service lines or lead solder in the distribution system. An NSF 53-certified filter is strongly recommended for drinking and cooking water.
As a small community water system, Worley may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 27 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Worley, ID water safe to drink?
Worley's drinking water has significant quality concerns based on EPA testing data. With a grade of F (36/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 4 water systems serve approximately 1,416 residents using groundwater (wells).
Recent water quality updates for Worley
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Worley's water quality assessment. Grade: F (36/100).
1 health-based. Contaminants: Lead and Copper Rule.
Contaminants: Groundwater Rule.
Contaminants: Lead and Copper Rule.
Federal disaster declaration (FEMA DR-4313). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-1781). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Worley's water supply.
Exceeds EPA action level. Lead service line replacement and point-of-use filtration recommended.
Violation history
Worley's water system has 138 total violations on record, including 24 health-based violations. 19 remain unresolved. 27 violations were issued in the last 5 years.
Flood & environmental risk
Kootenai County has experienced 5 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 Worley's water come from?
Worley's drinking water comes from groundwater (wells), supplied by 4 water systems serving approximately 1,416 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Worley residents can do
Recommended: NSF 53-certified pitcher or under-sink filter. This addresses the specific contaminants found in Worley'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.
Worley'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 Worley
Industrial polluters nearby
Reported releases to surface water by facilities near Worley, 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 | 5.5 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D2 — severe droughtKootenai 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
Kootenai County has experienced 5 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 Worley'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. | 17.0 | 15 | ppb | Inorganic | Over Limit |
Lead level trend (90th percentile)
See how Worley compares by contaminant
Explore where Worley ranks among all Idaho cities for specific contaminants.
Water source & infrastructure
Where Worley's water comes from
Worley'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 1,416 people through 4 water systems.
Water systems serving Worley
| System Name | PWSID | Population | Source |
|---|---|---|---|
| WORLEY CITY OF | ID1280206 | 591 | GW |
| CAVE BAY COMMUNITY SYSTEM | ID1280041 | 458 | GW |
| CONKLING PARK WATER ASSN | ID1280054 | 309 | GW |
| SM UTILITIES | ID1280294 | 58 | GW |
How Worley compares
Full Idaho rankings →Worley's score of 36/100 is below the average of 43/100 among major Idaho cities. It outscores 1 of 10 nearby cities. 9 of 10 nearby cities score higher.
Nearby cities
View Idaho rankings →About Worley, ID
Learn more about your water
Guides and resources related to Worley's water quality findings.
Explore water quality across Kootenai
Frequently asked questions
Is Worley, ID tap water safe to drink?
Worley's water quality earned a grade of F (36/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #138 out of 139 cities tested in Idaho.
What contaminants are in Worley's water?
Lead was measured at 17.0 ppb (90th percentile). 138 violations are on record.
How is Worley'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 Worley?
Yes — lead levels exceed the EPA action level of 15 ppb. We recommend an NSF 53-certified filter or reverse osmosis system. Based on current data, basic filtration should suffice for additional peace of mind.
Where does Worley's water come from?
Worley's water is sourced from Groundwater. The city has 4 water systems serving approximately 1,416 residents.
What health violations has Worley's water system had?
Worley 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. 19 violations remain unresolved.
Is Worley's groundwater at risk of contamination?
Worley 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 138 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 Worley's water compare to other cities?
Worley ranks #138 out of 139 cities in Idaho (better than 1% of state cities) and #15504 out of 15744 cities nationally (2th percentile). The grade of F reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.