Is Hinton, IA Tap Water Safe to Drink?
Graded A, with 2 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
90.6/100
waterverge.com Hinton, IA — Water Quality Report
Hinton's drinking water received a grade of A (90.6 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 935 residents using groundwater.
Lead levels were measured at 3.3 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 13 violations on record, including 1 health-based violation. 2 remain unresolved.
What to know about Hinton's water
Hinton ranks #168 out of 436 cities in Iowa for water quality, placing it mid-range in the state.
Hinton 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, Hinton may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Hinton, IA water safe to drink?
Hinton's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (90.6/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 935 residents using groundwater (wells).
Recent water quality updates for Hinton
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Hinton's water quality assessment. Grade: A (90.6/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: Consumer Confidence Rule.
Federal disaster declaration (FEMA DR-4421). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4184). Flood event — may have impacted local water infrastructure.
Contaminants: Coliform (TCR).
Key contaminant findings
Based on the most recent EPA sampling data for Hinton's water supply.
Well within EPA limits.
Violation history
Hinton's water system has 13 total violations on record, including 1 health-based violation. 2 remain unresolved. 2 violations were issued in the last 5 years.
Flood & environmental risk
Plymouth County has experienced 7 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 Missouri River At Sioux City, Perry Creek Near Millnerville, Perry Creek Near Hinton, Perry Creek At 38Th Street At Sioux City, Floyd River At James.
Where does Hinton's water come from?
Hinton's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 935 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Missouri River At Sioux City (river), Perry Creek Near Millnerville (river), Perry Creek Near Hinton (river), Perry Creek At 38Th Street At Sioux City (river), Floyd River At James (river).
What Hinton 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.
Hinton'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 Hinton
Industrial polluters nearby
Reported releases to surface water by facilities near Hinton, ranked by pounds discharged annually.
Total reported releases to surface water: 16 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
CARGILL FEED & NUTRITION SIOUX CITY SIOUX CITY, IA51105 | Zinc compounds | 15 | 7.4 mi |
SIOUX CITY FOUNDRY CO SIOUX CITY, IA51105 | Lead | 1 | 9.5 mi |
STANDARD READY MIX CONCRETE CO SIOUX CITY PLANT SIOUX CITY, IA51105 | Lead | 0 | 9.5 mi |
SMITHCO MANUFACTURING CO LE MARS, IA51031 | — | — | 9.7 mi |
PLYMOUTH ENERGY LLC MERRILL, IA51038 | — | — | 7.5 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Plymouth County has experienced 7 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. | 3.3 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Hinton compares by contaminant
Explore where Hinton ranks among all Iowa cities for specific contaminants.
Water source & infrastructure
Where Hinton's water comes from
Hinton'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 935 people through 1 water system.
Water bodies near Hinton
Hinton is located near 5 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Hinton
| System Name | PWSID | Population | Source |
|---|---|---|---|
| HINTON WATER SUPPLY | IA7528051 | 935 | GW |
How Hinton compares
Full Iowa rankings →Hinton's score of 90.6/100 is above the average of 72/100 among major Iowa cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Iowa rankings →About Hinton, IA
Wikipedia →Hinton is a city in Plymouth County, Iowa, United States. The population was 935 at the time of the 2020 census.
Learn more about your water
Guides and resources related to Hinton's water quality findings.
Explore water quality across Plymouth
Frequently asked questions
Is Hinton, IA tap water safe to drink?
Hinton's water quality earned a grade of A (90.6/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #168 out of 436 cities tested in Iowa.
What contaminants are in Hinton's water?
Lead was measured at 3.3 ppb (90th percentile). 13 violations are on record.
How is Hinton'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 Hinton?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Hinton's water come from?
Hinton's water is sourced from Groundwater. The city has 1 water system serving approximately 935 residents.
What health violations has Hinton's water system had?
Hinton has 1 health-based violation on record. The most recent violation was recorded in June 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 2 violations remain unresolved.
Is Hinton's groundwater at risk of contamination?
Hinton 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 13 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 Hinton's water compare to other cities?
Hinton ranks #168 out of 436 cities in Iowa (better than 61% of state cities) and #2140 out of 15744 cities nationally (86th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Hinton's small water system affect quality?
Hinton's system serves approximately 935 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 13 violations on record.