01The verdict: is Wisner water safe?
Wisner's tap water meets most EPA standards but has areas that warrant attention. With a grade of D+ (51/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 1,239 residents using groundwater (wells).
2 unresolved violations on record
EPA records show open compliance items for this system. Most are administrative, but unresolved items are worth watching.
See what was cited ↓Monitoring is on schedule
The system is meeting its EPA monitoring and reporting requirements — testing is happening when it should.
See the score ↓Lead is approaching its limit
Measured at 11.1 ppb — 74% of the 15 ppb limit. Within the rules, but with less headroom than you'd want.
See the ledger ↓Wisner's drinking water received a grade of D+ (51 out of 100), indicating poor water quality. The city's 1 water system serves approximately 1,239 residents using groundwater.
Lead levels were measured at 11.1 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 48 violations on record, including 45 health-based violations. 2 remain unresolved.
Wisner ranks #194 out of 196 cities in Nebraska for water quality, placing it among the lowest-rated in the state. Wisner 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, Wisner may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities. The system has seen 16 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
02What's in Wisner's water
Every contaminant flagged in Wisner, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.
Near Limit — EPA Action Level: 15 ppb
Within EPA limits but above the American Academy of Pediatrics recommended level of 1 ppb — no lead level is considered safe for children. An NSF 53-certified filter provides additional protection, and running the cold tap 30 seconds after stagnation reduces exposure.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. | 11.1 | 15 | ppb | Inorganic | Near Limit |
Cities ranked by 90th-percentile lead PF PFAS in Nebraska
Cities ranked by compounds detected Cu Copper in Nebraska
Cities ranked by 90th-percentile copper
03Wisner's ten-year track record
Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 48 violations on record, including 45 health-based violations. 2 remain unresolved.
6 of the last ten years were clean. The numbered years had EPA violations — red when any were health-based, amber when they were paperwork or missed-testing issues.
▲ Up 7.7 ppb since 2004. Latest reading: 11 ppb (2023) — 74% of the action level. Sampled at higher-risk homes (90th percentile).
04Where Wisner's water comes from
Wisner's drinking water is drawn from underground aquifers through wells.
Groundwater
Underground aquifers reached by wells — naturally filtered, but can carry minerals like arsenic and nitrate.
Local treatment
Groundwater generally needs less treatment — typically disinfection and, where needed, mineral removal.
1 system
1 water system, operated under local government ownership.
1,239 people
Residents served across Wisner's service area.
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 1,239 people through 1 water system.
| System name | PWSID | Population | Source |
|---|---|---|---|
| WISNER, CITY OF | NE3103903 | 1,239 | Groundwater |
Water bodies near Wisner
These water bodies shape the regional watershed and can indirectly affect groundwater quality.
05Pressure on Wisner's watershed
Outside forces that shape what reaches the treatment plant. None of these is a verdict on the tap by itself — but each adds pressure worth knowing about.
Flood & storm history
9 federal disaster declarations on record for Cuming County. Flooding and severe storms can overwhelm treatment plants, cause sewage overflows, and push runoff into supplies.
Drought
Cuming County is in D1 (moderate drought) per the U.S. Drought Monitor (week of Jul 2026). Drought can raise disinfection-byproduct levels and taste/odor issues as utilities draw from lower reservoirs.
06How Wisner compares
Scores for nearby Nebraska cities on one line, with the average marked.
dashed line = Nebraska average (66/100)
Wisner scores 51/100 — below the Nebraska average of 66/100. It outscores 1 of 10 nearby cities. Full Nebraska rankings →
56.5 / 100CLincoln, NE
56.5 / 100BGrand Island, NE
78.6 / 100CPapillion, NE
68 / 100CKearney, NE
70 / 100CFremont, NE
67 / 100
Compare all cities in the county — grades, violations, and contaminant data side by side.→
07What to do at home
Steps matched to what testing actually found in Wisner's water — not generic advice.
Filter drinking & cooking water
Basic carbon filter for extra protection. Lead detected at 11.1 ppb
Compare tested filters →Flush taps & check your service line
Lead leaches from pipes as water sits. Run cold water 30 seconds before drinking (especially mornings), and ask the utility whether your address still has a lead service line.
Lead risks explained →Watch for Wisner alerts
This area has a history of flood declarations — after severe weather, watch for boil-water advisories from the utility, and check the live alerts on this page.
All water alerts →Frequently asked questions
Is Wisner, NE tap water safe to drink?
Wisner's water quality earned a grade of D+ (51/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #194 out of 196 cities tested in Nebraska.
What contaminants are in Wisner's water?
Lead was measured at 11.1 ppb (90th percentile). 48 violations are on record.
How is Wisner'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 Wisner?
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 Wisner's water come from?
Wisner's water is sourced from Groundwater. The city has 1 water system serving approximately 1,239 residents.
What health violations has Wisner's water system had?
Wisner has 45 health-based violations on record. The most recent violation was recorded in October 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 2 violations remain unresolved.
Is Wisner's groundwater at risk of contamination?
Wisner 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 48 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 Wisner's water compare to other cities?
Wisner ranks #194 out of 196 cities in Nebraska (better than 1% of state cities) and #12710 out of 15382 cities nationally (17th percentile). The grade of D+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Wisner's small water system affect quality?
Wisner's system serves approximately 1,239 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 48 violations on record.