Lincoln Water Quality at a Glance
Is Lincoln Water Safe to Drink?
Generally Yes, With Some Caution — Lincoln’s water met all federal standards in 2025 and comes from high-quality Platte River wellfields. However, disinfection byproducts (TTHMs at 32 ppb and HAA5 at 21.8 ppb) present a moderate long-term cancer risk. Arsenic is now detected at up to 7.7 ppb — approaching the 10 ppb federal limit — and around 6,000 homes built before 1950 may still have lead service lines. The city’s Lead Safe Lincoln programme is replacing these at no cost. Check our Nebraska state water quality page for broader context.
⚠️ Key Concerns for Lincoln Residents
- Disinfection Byproducts: TTHMs averaging 32 ppb and HAA5 at 21.8 ppb from chloramine treatment — both below EPA limits but exceeding independent health guidelines
- Arsenic Levels: 7.1–7.7 ppb detected in 2025 — approaching the federal limit of 10 ppb; naturally occurring from geological sources
- Lead Service Lines: Around 6,000 lines in homes built before 1950; city’s free Lead Safe Lincoln replacement programme is underway, with 263 completed by mid-2025
- Individual Contaminants: Independent testing found bromate, bromodichloromethane, and dibromoacetic acid exceeding health guidelines
Read the full report below for detailed analysis, city-specific data, and actionable recommendations for Lincoln residents.
Advertisement — Report continues below
Great water report.
Here’s how to make it perfect.
Your water quality report shows strong results — and that’s genuinely good news. But even treated municipal water picks up residual chlorine, microplastics, and sediment between the treatment plant and your tap. A filter takes great water and makes it flawless.
✅ Improves taste, smell & clarity — removes residual chlorine and sediment that reach your glass after treatment
✅ NSF/ANSI 42, 58 & 372 certified — independently tested, not just manufacturer claims
✅ Installs in 30 minutes, no plumber — fills a glass in 8 seconds, smart LED filter monitor
Renting or can’t drill? The Waterdrop K19 Countertop RO — plug in, fill the tank, done. No installation, no drilling, no plumber.
Advertisement — this page contains affiliate links. If you buy through these links, we may earn a commission at no extra cost to you.
Lincoln, Nebraska — Water Quality Report 2026: PFAS Testing, Infrastructure & Safety
Lincoln Water System (LWS) has been delivering safe, reliable drinking water to Nebraska’s capital city since 1883. Operating as part of the City’s Transportation and Utilities Department, the system serves approximately 304,000 residents across Lincoln and surrounding areas, maintaining more than 1,370 miles of distribution lines, multiple pumping stations, and advanced treatment facilities. In 2025, the system delivered an average of 37.6 million gallons of water per day — pumping more than 13.7 billion gallons total from Platte River wellfields near Ashland, roughly 20 miles northeast of Lincoln.
Lincoln sources its water from wells along the Platte River near Ashland. Approximately half is pure groundwater; the remainder is classified as groundwater under the direct influence of surface water. The water is pumped to treatment facilities where it undergoes comprehensive processing before reaching your tap. Lincoln’s water consistently met all federal and state quality standards in 2025 with no violations recorded — though elevated arsenic, disinfection byproducts, and ongoing lead service line replacement remain the system’s headline challenges. For a wider view of water quality across the state, see our Nebraska drinking water overview.
Lincoln Water Quality: Current Status (2025–2026)
Latest Testing Results
- Comprehensive Monitoring: Lincoln Water System conducted thousands of water quality tests in 2025, maintaining compliance with all EPA and Nebraska Department of Water, Energy, and Environment (NDWEE) regulations — and recording no violations for the year.
- Testing Scope: Lincoln’s water is tested for more than 100 regulated and unregulated contaminants, including PFAS under EPA’s mandatory UCMR 5 programme, with monitoring at treatment facilities and across the distribution network. Nebraska’s statewide UCMR 5 review identified only three systems exceeding PFAS MCLs — Lincoln was not among them.
- Compliance Status: All federal and state drinking water standards were met in 2025. Independent testing continues to show some contaminants — including bromate, bromodichloromethane, and dibromoacetic acid — at levels exceeding health guidelines, though not legal limits. Check our US water quality overview for national context.
Water Sources
- Platte River Wellfields: Primary source located near Ashland, approximately 20 miles northeast of Lincoln. More than 13.7 billion gallons were pumped in 2025 to serve Lincoln’s 304,000 residents.
- Groundwater Composition: Roughly half of Lincoln’s supply is pure groundwater; the other half is groundwater under the direct influence of surface water. The source is naturally high quality but contains iron and manganese requiring treatment.
- Future Expansion — Water 2.0: Lincoln’s landmark “Water 2.0” initiative will develop a second water source from the Missouri River, designed to serve the city’s needs through 2075 and beyond — the largest public works project in Lincoln’s history.
Advanced Treatment Technology
- Dual Treatment Processes: Lincoln operates two parallel treatment processes — a proven aeration, chlorination, detention and filtration method in use since the 1930s, and a newer ozone-based process that uses ozone as a powerful oxidizer and disinfectant.
- Disinfection Protocol: The system uses chloramine (formed by combining chlorine and ammonia) as its primary residual disinfectant. Unlike free chlorine, chloramine persists throughout the distribution network — but it cannot be removed simply by letting water stand, and it produces its own disinfection byproducts. NSF-certified point-of-use filters can reduce these effectively.
- Quality Assurance: Real-time monitoring throughout the treatment and distribution network tracks water quality parameters continuously. Fluoride is added at 0.8–1.5 ppm to support dental health.
Infrastructure Modernisation
- System Capacity: Lincoln’s water infrastructure includes 1,370+ miles of water mains, 12,823 fire hydrants, and 29,344 valves. The system is projected to serve Lincoln adequately for the next 20–25 years.
- Lead Service Line Programme: The Lead Safe Lincoln initiative — launched in July 2024 — had replaced 263 lead service lines by August 2025. The city aims to replace all ~6,000 affected lines by 2035, funded partly by $32.6 million in federal Bipartisan Infrastructure Law loans, at no cost to property owners. Track active boil water and drinking water notices in Lincoln and across the US on our live tracker.
- “Water 2.0” Project: Missouri River wellfield development will secure Lincoln’s water supply through at least 2075 — the city’s most significant infrastructure investment to date.
Customer Protection Initiatives
Lincoln Water System provides extensive customer support, including free lead test kits (one per year per address), the Lead Safe Lincoln free service line replacement programme, and transparent annual water quality reporting. The city’s Water Management Plan sets permanent conservation measures including designated outdoor watering days and a ban on irrigation between 10 a.m. and 6 p.m. The utility’s investments in advanced treatment, lead pipe replacement, and future source planning reflect a long-term commitment to safe, reliable drinking water for Lincoln residents. Compare Lincoln’s profile with nearby Omaha and other Nebraska communities.
Recommendations for Lincoln Residents
Test Your Water
If your home was built before 1950, or has pre-1986 plumbing, lead testing is particularly advisable. Lincoln Water System offers one free lead test kit per year per address — call 402-441-7571 (option 2) or visit lincoln.ne.gov/DrinkingWater. The Lead Safe Lincoln programme replaces eligible lines at no cost. See our water alert news for the latest on Lincoln and national drinking water issues.
Conserve Water
Follow Lincoln’s permanent outdoor irrigation schedule — odd-numbered addresses water Tuesday, Thursday, Saturday; even-numbered addresses on Wednesday, Friday, Sunday. No irrigation between 10 a.m. and 6 p.m. Water-efficient fixtures and prompt leak repairs can save thousands of gallons annually and reduce bills.
Consider Home Filtration
Lincoln’s water meets all standards, but disinfection byproducts and rising arsenic levels (up to 7.7 ppb) make a point-of-use filter a sensible choice for drinking and cooking water. Look for NSF-certified filters for arsenic and DBP reduction — see our water filter recommendations for options suited to Lincoln’s water profile.
Follow Irrigation Guidelines
Adhere to Lincoln’s Permanent Conservation Measures: irrigate on your assigned days only, avoid watering between 10 a.m. and 6 p.m. to minimise evaporation, and eliminate runoff onto streets and sidewalks. Current restrictions and drought-stage updates are at lincoln.ne.gov/water or call 402-441-7551. During declared drought stages, additional limits on car washing, pressure washing, and pool filling may apply.
Report Issues
Contact Lincoln Water System Customer Service at 402-441-7551 for water main breaks, pressure problems, or quality concerns — available 24/7 for emergencies. Prompt reporting of leaks and discolouration helps conserve water and maintain system integrity. For drinking water safety notices affecting your area, our live boil water notices tracker is updated in real time.
Frequently Asked Questions
Is Lincoln’s tap water safe to drink in 2026?
Yes — Lincoln’s tap water met all federal and state drinking water standards in 2025, with no violations recorded by Lincoln Water System. The water comes from naturally high-quality Platte River groundwater near Ashland and undergoes comprehensive dual-process treatment before reaching your tap.
That said, independent testing identifies some contaminants — including arsenic (up to 7.7 ppb), disinfection byproducts, and individual compounds like bromodichloromethane — at levels that exceed health guidelines even if they remain below legal limits. Residents in older homes with lead service lines should check their eligibility for the Lead Safe Lincoln free replacement programme. See how Lincoln compares to other cities on our national water quality page.
Why does my water sometimes taste or smell different?
Occasional taste and odour changes in Lincoln’s water can occur for several reasons:
1. Disinfection: Lincoln uses chloramine (chlorine + ammonia) as a residual disinfectant. Unlike free chlorine, chloramine does not dissipate when water is left to stand — so the taste may persist even after running the tap. It can be particularly noticeable in hot water.
2. Seasonal variation: Natural changes in Platte River source water — during heavy rain or drought — can alter taste and odour, even after treatment.
3. Home plumbing: Infrequently used faucets or ageing internal pipework can introduce taste or odour concerns unrelated to the utility’s supply.
If concerns persist, contact Lincoln Water System at 402-441-7551. Running cold water for a minute or two from an unused tap often helps. An NSF-certified carbon filter at the point of use is the most effective solution for ongoing taste issues.
Is there lead in Lincoln’s water system?
Lincoln Water System treats the public water supply to meet all lead and copper regulations. The key risk is not the water itself leaving the treatment plant — it’s lead leaching from ageing service lines and internal plumbing before it reaches your tap.
• Lead service lines: Around 6,000 properties — predominantly those built before 1950 — have lead or lead-contaminated galvanised service lines. Replacement work expanded in 2025 into Near South, Everett, Irvingdale, Capitol View and South Salt Creek neighbourhoods.
• Progress: By August 2025, 263 lines had been replaced through the Lead Safe Lincoln programme. The city aims to complete all ~6,000 replacements by 2035, funded in part by $32.6 million in Bipartisan Infrastructure Law loans.
• Historical testing: 2022 lead sampling found levels ranging from non-detectable to 18.4 ppb, with 90% of homes below 1.80 ppb — well under the EPA action level of 15 ppb.
• Free testing: One free lead test kit per year per address — call 402-441-7571 (option 2). Monitor current drinking water alerts on our live US boil water notices tracker.
Are there water restrictions in Lincoln?
Lincoln operates under year-round Permanent Conservation Measures:
Permanent Conservation Measures:
• Irrigation limited to three days per week — odd-numbered addresses: Tuesday, Thursday, Saturday; even-numbered addresses: Wednesday, Friday, Sunday
• No outdoor watering between 10 a.m. and 6 p.m.
• No water waste (runoff onto streets or sidewalks)
Drought Response:
During declared drought conditions, Lincoln Water System may impose additional limits on outdoor irrigation, vehicle washing, pressure washing, and pool filling. Current status is available at lincoln.ne.gov/water or by calling 402-441-7551. You can also check our water alert news for drought and restriction updates across the US.
Quality News About Your Water
Get the comprehensive water quality news coverage you need with our dedicated US Water News Service. From coast to coast, we deliver in-depth reporting and expert analysis on PFAS contamination, EPA regulatory changes, infrastructure developments, and emerging water safety issues affecting communities nationwide. While mainstream media only covers the biggest stories, we provide the detailed, ongoing coverage that helps you understand the full scope of America’s water challenges.
What’s actually in your tap water? Enter your ZIP code for a full breakdown of contaminants detected in your local supply
Drinking water from a well? Check our directory here for more information
Contaminants of Concern
Disinfection Byproducts
Source: Formed when chloramine reacts with naturally occurring organic matter in source water; levels can be higher during warmer months when organic content rises.
Health Effects: Long-term exposure at elevated levels is associated with increased risk of certain cancers, and may affect liver, kidney, and central nervous system function. Independent health guidelines are more stringent than EPA legal limits.
Current Levels: TTHMs averaging 32 ppb (highest locational running annual average); HAA5 at 21.8 ppb. Both remain below EPA MCLs but exceed independent health benchmarks. Individual compounds including bromodichloromethane, bromate, and dibromoacetic acid have also been detected above health guidelines. EPA Limits: 80 ppb for total trihalomethanes; 60 ppb for haloacetic acids. An NSF-certified reverse osmosis or activated carbon filter is the most effective way to reduce DBPs at the tap.
Arsenic
Source: Naturally occurring in soil and bedrock across parts of Nebraska; enters groundwater through geological erosion rather than industrial contamination.
Health Effects: Long-term exposure at elevated concentrations is associated with increased cancer risk and can affect cardiovascular, pulmonary, immunological, neurological, and endocrine systems. The EPA acknowledges ongoing research into health effects at levels well below 10 ppb.
Current Status: Lincoln’s 2025 Annual Report confirms arsenic at 7.1–7.7 ppb — slightly higher than the 7.1–7.2 ppb range recorded in 2024, and approaching the EPA MCL. Lincoln Water System continues to evaluate treatment and removal options. EPA Limit: 10 ppb. Reverse osmosis filtration is effective at reducing arsenic to below detectable levels — see our filter guide for recommended units. For comparison, see how Nebraska stacks up on our Nebraska water quality page.
Please read – our information
The information presented on cleanairandwater.net is compiled from official water quality reports, trusted news sources, government websites, and public health resources. While we strive for accuracy and thoroughness in our presentations, we are not scientists, engineers, or qualified water quality professionals.
Our mission is to present water quality information in an accessible, real-world format that helps people understand what’s in their water and make informed decisions about their health and safety. We believe that complex environmental information should be available to everyone in a format that’s easy to understand.
We make every effort to ensure our content is current and accurate, but we cannot guarantee that all information is complete or error-free. This website should not replace official communications from your local water utility or health department. We always recommend consulting official sources for the most up-to-date information regarding your specific water system.
Clean Air and Water is not liable for any unintentional errors, omissions, or outdated information. The content on this site is provided for informational purposes only and should not be considered professional advice.
