Is Spokane Valley, WA Tap Water Safe to Drink?
Graded C- — but Lead and PFOS were detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
59.1/100
waterverge.com Spokane Valley, WA — Water Quality Report
Spokane Valley's drinking water received a grade of C- (59.1 out of 100), indicating poor water quality. The city's 5 water systems serve approximately 33,957 residents using groundwater.
Lead levels were measured at 20.8 ppb (90th percentile), which exceeds the EPA action level of 15 ppb. UCMR 5 testing detected 1 PFAS compound, with levels exceeding EPA maximum contaminant levels in the water supply.
The system has 112 violations on record, including 10 health-based violations. 13 remain unresolved.
What to know about Spokane Valley's water
Spokane Valley ranks #195 out of 294 cities in Washington for water quality, placing it below average in the state.
Spokane Valley 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.
Of particular concern: PFAS "forever chemical" levels exceed the 2024 EPA maximum contaminant levels. These synthetic compounds don't break down naturally and require specialized filtration such as reverse osmosis or granular activated carbon.
Hexavalent chromium (chromium-6) was detected at 0.34 µg/L in UCMR 3 testing. While below California's 10 µg/L limit and with no federal MCL set, residents sensitive to this contaminant may consider reverse osmosis filtration.
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.
The system has seen 6 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Spokane Valley, WA water safe to drink?
Spokane Valley's drinking water has significant quality concerns based on EPA testing data. With a grade of C- (59.1/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 5 water systems serve approximately 33,957 residents using groundwater (wells).
Recent water quality updates for Spokane Valley
A timeline of significant water quality events, violations, and data updates.
PFAS levels exceed EPA maximum contaminant levels. Reverse osmosis or activated carbon filtration recommended.
Latest EPA compliance and testing data incorporated into Spokane Valley's water quality assessment. Grade: C- (59.1/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: LEAD AND COPPER RULE REVISIONS.
Contaminants: Consumer Confidence Rule.
Federal disaster declaration (FEMA DR-4309). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Spokane Valley's water supply.
Exceeds EPA action level. Lead service line replacement and point-of-use filtration recommended.
PFAS "forever chemicals" exceed EPA maximum contaminant levels. Reverse osmosis or granular activated carbon filtration strongly recommended.
Violation history
Spokane Valley's water system has 112 total violations on record, including 10 health-based violations. 13 remain unresolved. 6 violations were issued in the last 5 years.
Flood & environmental risk
Spokane County has experienced 7 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. Local water sources include Spokane River Below N Greene, Little Spokane River.
Where does Spokane Valley's water come from?
Spokane Valley's drinking water comes from groundwater (wells), supplied by 5 water systems serving approximately 33,957 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Spokane River Below N Greene (river), Little Spokane River (river).
What Spokane Valley residents can do
Recommended: Reverse osmosis system. This addresses the specific contaminants found in Spokane Valley'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.
Spokane Valley'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 ↓Forever chemicals overview
National PFAS report →Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Spokane Valley
Industrial polluters nearby
Reported releases to surface water by facilities near Spokane Valley, ranked by pounds discharged annually.
Total reported releases to surface water: 209 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
KAISER ALUMINUM WASHINGTON LLC SPOKANE VALLEY, WA99215 | Zinc compounds | 209 | 2.0 mi |
CENTRAL PRE-MIX CONCRETE PRODUCTS CO. SPOKANE, WA99216 | Lead | 0 | 2.5 mi |
HUNTWOOD INDUSTRIES LIBERTY LAKE, WA99019 | — | — | 6.9 mi |
CITYSERVICEVALCON LLC GREENACRES BULK FACILITY GREENACRES, WA99016 | — | — | 3.8 mi |
MICA BRICK PLANT MICA, WA99023 | — | — | 7.3 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites within 10 miles of Spokane Valley
Superfund sites nearby
Federally tracked hazardous-waste sites on the EPA National Priorities List. Proximity does not necessarily indicate tap-water contamination — the connection depends on hydrology and treatment.
- GENERAL ELECTRIC CO SPOKANE APPARATUS SERVICE SHOP5.2 mi
- GREENACRES LANDFILL5.4 mi
- MICA LANDFILL5.9 mi
- NORTH MARKET STREET7.6 mi
- KAISER ALUMINUM MEAD WORKS9.2 mi
Source: EPA Superfund National Priorities List
Drought conditions
D1 — moderate droughtSpokane County is currently in D1 (moderate 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
Spokane County has experienced 7 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 Spokane Valley'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. | 20.8 | 15 | ppb | Inorganic | Over Limit |
| 11Cl-PF3OUdS | ND | HI | µg/L | PFAS | Not Detected |
| 4:2 FTS | ND | HI | µg/L | PFAS | Not Detected |
| 6:2 FTS 6:2 FTSPFAS A fluorotelomer sulfonate commonly found at sites contaminated with aqueous film-forming foam (AFFF) used in firefighting. Health EffectsPotential liver toxicity and endocrine disruption. Less studied but identified as a contaminant of concern. EPA LimitNo individual MCL (not yet regulated) Common SourcesFirefighting foam (AFFF), airports, military bases, and industrial facilities. | ND | HI | µg/L | PFAS | Not Detected |
| 8:2 FTS | ND | HI | µg/L | PFAS | Not Detected |
| 9Cl-PF3ONS | ND | HI | µg/L | PFAS | Not Detected |
| ADONA | ND | HI | µg/L | PFAS | Not Detected |
| HFPO-DA HFPO-DA (GenX)PFAS A replacement for PFOA in manufacturing, marketed as safer but still a persistent "forever chemical." Also known as GenX. Health EffectsLiver and kidney effects, reproductive toxicity, immune system effects, and potential cancer risk. EPA Limit10 ppt MCL Common SourcesFluoropolymer manufacturing (used as PFOA replacement), industrial wastewater discharge. | ND | 0.01 | µg/L | PFAS | Not Detected |
| lithium LithiumInorganic A naturally occurring alkali metal found in groundwater. Monitored under UCMR 5 to assess occurrence in drinking water. Health EffectsKidney effects at high doses. Low-level exposure effects under study; some research suggests neurological effects. EPA LimitNo MCL (monitoring only under UCMR 5) Common SourcesNatural mineral deposits, geothermal water, and industrial discharge. | ND | HI | µg/L | PFAS | Not Detected |
| NEtFOSAA | ND | HI | µg/L | PFAS | Not Detected |
| NFDHA | ND | HI | µg/L | PFAS | Not Detected |
| NMeFOSAA | ND | HI | µg/L | PFAS | Not Detected |
| PFBA PFBAPFAS One of the shortest-chain PFAS compounds. Very mobile in water and difficult to remove with standard filtration. Health EffectsThyroid effects, potential developmental toxicity. Shorter half-life in body than long-chain PFAS. EPA LimitNo individual MCL (not yet regulated) Common SourcesDegradation of longer-chain PFAS, industrial discharge, and firefighting foam. | ND | HI | µg/L | PFAS | Not Detected |
| PFBS PFBSPFAS A short-chain PFAS used as a replacement for PFOS. While it clears the body faster than long-chain PFAS, it still persists in the environment. Health EffectsThyroid effects, reproductive and developmental toxicity, kidney effects. EPA LimitPart of Hazard Index (1.0) Common SourcesIndustrial discharge, firefighting foam, and as a replacement chemical in manufacturing. | ND | HI | µg/L | PFAS | Not Detected |
| PFDA | ND | HI | µg/L | PFAS | Not Detected |
| PFDoA | ND | HI | µg/L | PFAS | Not Detected |
| PFEESA | ND | HI | µg/L | PFAS | Not Detected |
| PFHpA PFHpAPFAS A medium-chain PFAS compound found in various environmental samples. Less studied than PFOA/PFOS but still considered a contaminant of concern. Health EffectsLiver effects, potential developmental toxicity, and endocrine disruption. EPA LimitPart of Hazard Index (1.0) Common SourcesDegradation of longer-chain PFAS, industrial discharge, and contaminated water sources. | ND | HI | µg/L | PFAS | Not Detected |
| PFHpS | ND | HI | µg/L | PFAS | Not Detected |
| PFHxA PFHxAPFAS A short-chain PFAS replacement chemical widely used after manufacturers phased out longer-chain PFAS. Very commonly detected in water. Health EffectsLiver and kidney effects, potential thyroid disruption. Considered less toxic than long-chain PFAS but still persistent. EPA LimitNo individual MCL (not yet regulated) Common SourcesIndustrial processes, firefighting foam (AFFF), food packaging, and textile treatment. | ND | HI | µg/L | PFAS | Not Detected |
| PFHxS PFHxSPFAS A medium-chain PFAS found in firefighting foam and consumer products. It has a long half-life in the human body, similar to long-chain PFAS. Health EffectsImmune system effects, thyroid disruption, and potential reproductive and developmental harm. EPA LimitPart of Hazard Index (1.0) Common SourcesFirefighting foam (AFFF), waterproof textiles, food packaging, and industrial discharge. | ND | HI | µg/L | PFAS | Not Detected |
| PFMBA | ND | HI | µg/L | PFAS | Not Detected |
| PFMPA | ND | HI | µg/L | PFAS | Not Detected |
| PFNA PFNAPFAS A long-chain PFAS compound used in manufacturing fluoropolymers. It bioaccumulates in the body and is very persistent in the environment. Health EffectsDevelopmental effects, liver toxicity, immune suppression, and potential cancer risk. EPA LimitPart of Hazard Index (1.0) Common SourcesFluoropolymer manufacturing, industrial emissions, and contaminated water sources. | ND | HI | µg/L | PFAS | Not Detected |
| PFOA PFOAPFAS A long-chain PFAS ("forever chemical") once widely used in nonstick coatings and firefighting foam. It persists in the body and environment for years. Health EffectsLinked to kidney and testicular cancer, thyroid disease, elevated cholesterol, and reproductive issues. EPA Limit4.0 ppt MCL Common SourcesIndustrial discharge, firefighting foam (AFFF), nonstick cookware manufacturing, and contaminated groundwater. | ND | 0.004 | µg/L | PFAS | Not Detected |
| PFOS PFOSPFAS A long-chain PFAS compound historically used in stain-resistant coatings and firefighting foam. One of the most studied and persistent PFAS chemicals. Health EffectsLiver damage, immune system suppression, thyroid disruption, increased cholesterol, and potential cancer risk. EPA Limit4.0 ppt MCL Common SourcesFirefighting foam (AFFF), industrial sites, stain-resistant fabric treatments, and contaminated groundwater. | 0.005 | 0.004 | µg/L | PFAS | Over MCL |
| PFPeA PFPeAPFAS A short-chain PFAS compound commonly detected in drinking water. One of the most frequently found PFAS in UCMR 5 monitoring. Health EffectsLess studied than PFOA/PFOS. Potential liver and thyroid effects. Research is ongoing. EPA LimitNo individual MCL (not yet regulated) Common SourcesIndustrial discharge, firefighting foam degradation, and consumer products. | ND | HI | µg/L | PFAS | Not Detected |
| PFPeS | ND | HI | µg/L | PFAS | Not Detected |
| PFTA | ND | HI | µg/L | PFAS | Not Detected |
| PFTrDA | ND | HI | µg/L | PFAS | Not Detected |
| PFUnA | ND | HI | µg/L | PFAS | Not Detected |
Lead level trend (90th percentile)
See how Spokane Valley compares by contaminant
Explore where Spokane Valley ranks among all Washington cities for specific contaminants.
Water source & infrastructure
Where Spokane Valley's water comes from
Spokane Valley'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 33,957 people through 5 water systems.
Water bodies near Spokane Valley
Spokane Valley is located near 2 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Spokane Valley
| System Name | PWSID | Population | Source |
|---|---|---|---|
| VERA WATER & POWER | WA5391450 | 24,692 | GW |
| EAST SPOKANE WATER DIST 1 | WA5321650 | 4,285 | GW |
| HUTCHINSON IRRIGATION DIST #16 | WA5335100 | 2,826 | GW |
| CARNHOPE IRRIGATION DISTRICT 7 | WA5311250 | 2,104 | GW |
| PINE HAYDEN SUBD | ID1280140 | 50 | GWP |
How Spokane Valley compares
Full Washington rankings →Spokane Valley's score of 59.1/100 is above the average of 53/100 among major Washington cities. It outscores 7 of 10 nearby cities.
Nearby cities
View Washington rankings →About Spokane Valley, WA
Wikipedia →Spokane Valley is a city in Spokane County, Washington, United States, and the largest suburb of Spokane. It is located east of Spokane, west of Coeur d'Alene, Idaho, and surrounds the city of Millwood on three sides. The city incorporated as the City of Spokane Valley on March 31, 2003. The population was 102,976 at the 2020 census, making it the ninth-most populous city in Washington State. Spokane Valley is named after the valley of the Spokane River, in which it is located. The city and the general area is colloquially referred to as "The Valley" by residents of the Spokane–Coeur d'Alene area.
Learn more about your water
Guides and resources related to Spokane Valley's water quality findings.
Explore water quality across Spokane
Frequently asked questions
Is Spokane Valley, WA tap water safe to drink?
Spokane Valley's water quality earned a grade of C- (59.1/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #195 out of 294 cities tested in Washington.
What contaminants are in Spokane Valley's water?
Lead was measured at 20.8 ppb (90th percentile). 1 PFAS compound was detected. 112 violations are on record.
How is Spokane Valley'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 Spokane Valley?
Yes — lead levels exceed the EPA action level of 15 ppb. We recommend an NSF 53-certified filter or reverse osmosis system. PFAS compounds exceed EPA limits — a reverse osmosis or activated carbon filter is recommended.
Where does Spokane Valley's water come from?
Spokane Valley's water is sourced from Groundwater. The city has 5 water systems serving approximately 33,957 residents.
What health violations has Spokane Valley's water system had?
Spokane Valley has 10 health-based violations on record. The most recent violation was recorded in November 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 13 violations remain unresolved.
Is Spokane Valley's groundwater at risk of contamination?
Spokane Valley 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 112 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 Spokane Valley's water compare to other cities?
Spokane Valley ranks #195 out of 294 cities in Washington (better than 34% of state cities) and #12206 out of 15744 cities nationally (23th percentile). The grade of C- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.