Is Lawton, IA Tap Water Safe to Drink?
Graded A, with 1 unresolved violation on record. See what was cited — and what it means for your tap. What to do next ↓
91/100
waterverge.com Lawton, IA — Water Quality Report
Lawton's drinking water received a grade of A (91 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 943 residents using groundwater.
Lead levels were measured at 4.3 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 10 violations on record, including 3 health-based violations. 1 remains unresolved.
What to know about Lawton's water
Lawton ranks #161 out of 436 cities in Iowa for water quality, placing it mid-range in the state.
Lawton 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.
As a small community water system, Lawton may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Lawton, IA water safe to drink?
Lawton's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (91/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 943 residents using groundwater (wells).
Recent water quality updates for Lawton
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Lawton's water quality assessment. Grade: A (91/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
Federal disaster declaration (FEMA DR-4421). Flood event — may have impacted local water infrastructure.
Contaminants: Gross Alpha, Excl. Radon and U.
Federal disaster declaration (FEMA DR-4184). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Lawton's water supply.
Well within EPA limits.
Violation history
Lawton's water system has 10 total violations on record, including 3 health-based violations. 1 remain unresolved. 2 violations were issued in the last 5 years.
Flood & environmental risk
Woodbury County has experienced 8 federally declared disasters since 1965. 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 Floyd River At James, Elliott Creek At Lawton.
Where does Lawton's water come from?
Lawton's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 943 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Floyd River At James (river), Elliott Creek At Lawton (river).
What Lawton residents can do
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.
Lawton'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 Lawton
Industrial polluters nearby
Reported releases to surface water by facilities near Lawton, ranked by pounds discharged annually.
Total reported releases to surface water: 15 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
CARGILL FEED & NUTRITION SIOUX CITY SIOUX CITY, IA51105 | Zinc compounds | 15 | 9.7 mi |
HUBBARD FEEDS INC SIOUX CITY, IA51106 | — | — | 10.0 mi |
CHESTERMAN CO SIOUX CITY, IA51106 | — | — | 9.9 mi |
KAY DEE LLC - KAY DEE FEED FACILITY SIOUX CITY, IA51106 | — | — | 9.1 mi |
PURINA ANIMAL NUTRITION LLC - SIOUX CITY IA SIOUX CITY, IA51106 | — | — | 8.3 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Woodbury County has experienced 8 federally declared disasters since 1965. 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. | 4.3 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Lawton compares by contaminant
Explore where Lawton ranks among all Iowa cities for specific contaminants.
Water source & infrastructure
Where Lawton's water comes from
Lawton'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 943 people through 1 water system.
Water bodies near Lawton
Lawton is located near 2 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Lawton
| System Name | PWSID | Population | Source |
|---|---|---|---|
| LAWTON WATER SUPPLY | IA9743065 | 943 | GW |
How Lawton compares
Full Iowa rankings →Lawton's score of 91/100 is above the average of 72/100 among major Iowa cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Iowa rankings →About Lawton, IA
Wikipedia →Lawton is a city in Woodbury County, Iowa, Iowa, United States. It is part of the Sioux City metropolitan area. The population was 943 at the time of the 2020 census.
Learn more about your water
Guides and resources related to Lawton's water quality findings.
Explore water quality across Woodbury
Frequently asked questions
Is Lawton, IA tap water safe to drink?
Lawton's water quality earned a grade of A (91/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #161 out of 436 cities tested in Iowa.
What contaminants are in Lawton's water?
Lead was measured at 4.3 ppb (90th percentile). 10 violations are on record.
How is Lawton'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 Lawton?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Lawton's water come from?
Lawton's water is sourced from Groundwater. The city has 1 water system serving approximately 943 residents.
What health violations has Lawton's water system had?
Lawton has 3 health-based violations on record. The most recent violation was recorded in June 2023. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 1 violation remains unresolved.
Is Lawton's groundwater at risk of contamination?
Lawton 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 10 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 Lawton's water compare to other cities?
Lawton ranks #161 out of 436 cities in Iowa (better than 63% of state cities) and #1954 out of 15744 cities nationally (88th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Lawton's small water system affect quality?
Lawton's system serves approximately 943 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 10 violations on record.