Is Hull, IA Tap Water Safe to Drink?
Graded A- — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
87.5/100
waterverge.com Hull, IA — Water Quality Report
Hull's drinking water received a grade of A- (87.5 out of 100), indicating good water quality. The city's 2 water systems serve approximately 2,409 residents using purchased ground water.
Lead levels were measured at 1.8 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 3 violations on record, including 1 health-based violation. 1 remains unresolved.
What to know about Hull's water
Hull ranks #287 out of 436 cities in Iowa for water quality, placing it below average in the state.
Hull purchases its water from a regional wholesaler, meaning quality depends on both the supplier's treatment and the local distribution system's condition.
As a small community water system, Hull may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Hull, IA water safe to drink?
Hull's tap water meets most EPA standards but has areas that warrant attention. With a grade of A- (87.5/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 2 water systems serve approximately 2,409 residents using groundwater (wells).
Recent water quality updates for Hull
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Hull's water quality assessment. Grade: A- (87.5/100).
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.
1 health-based. Contaminants: Coliform (TCR).
Contaminants: Coliform (TCR).
Key contaminant findings
Based on the most recent EPA sampling data for Hull's water supply.
Well within EPA limits.
Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.
Violation history
Hull's water system has 3 total violations on record, including 1 health-based violation. 1 remain unresolved.
Flood & environmental risk
Sioux County has experienced 6 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 Burr Oak Creek Near Perkins.
Where does Hull's water come from?
Hull's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 2,409 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Burr Oak Creek Near Perkins (river).
What Hull 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.
Hull'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 Hull
Industrial polluters nearby
Reported releases to surface water by facilities near Hull, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
AGROPUR INC HULL, IA51239 | — | — | 0.4 mi |
VALLEY PLATING INC. ROCK VALLEY, IA51247 | — | — | 9.1 mi |
GROSCHOPP INC. SIOUX CENTER, IA51250 | — | — | 6.9 mi |
PELLA CORP SIOUX CENTER OPERATIONS SIOUX CENTER, IA51250 | — | — | 6.7 mi |
SIOUXLAND ENERGY COOPERATIVE SIOUX CENTER, IA51250 | — | — | 8.7 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Sioux County has experienced 6 federally declared disasters since 1965. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Hull'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. | 1.8 | 15 | ppb | Inorganic | Safe |
| Copper (90th percentile) CopperInorganic A metal that enters drinking water mainly through corrosion of copper plumbing. Small amounts are essential for health, but excess levels are harmful. Health EffectsGastrointestinal distress (nausea, vomiting, diarrhea) at short-term high levels; liver and kidney damage from long-term exposure. EPA Limit1.3 mg/L action level Common SourcesCorrosion of copper household plumbing, erosion of natural deposits. | 1.80 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level trend (90th percentile)
See how Hull compares by contaminant
Explore where Hull ranks among all Iowa cities for specific contaminants.
Water source & infrastructure
Where Hull's water comes from
Hull purchases its water supply from a regional wholesale provider rather than treating raw water directly.
Water quality depends on both the wholesaler's treatment standards and the condition of Hull's local distribution pipes and storage facilities.
Purchased water systems are common in suburban areas and smaller communities that lack the infrastructure for independent treatment.
The system is operated by local government ownership and serves approximately 2,409 people through 2 water systems.
Water bodies near Hull
Hull is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Hull
| System Name | PWSID | Population | Source |
|---|---|---|---|
| HULL WATER SUPPLY | IA8444063 | 2,384 | GWP |
| LEWIS AND CLARK REGIONAL WATER SYSTEM | IA8486701 | 25 | GWP |
How Hull compares
Full Iowa rankings →Hull's score of 87.5/100 is above the average of 72/100 among major Iowa cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Iowa rankings →About Hull, IA
Learn more about your water
Guides and resources related to Hull's water quality findings.
Explore water quality across Sioux
Frequently asked questions
Is Hull, IA tap water safe to drink?
Hull's water quality earned a grade of A- (87.5/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #287 out of 436 cities tested in Iowa.
What contaminants are in Hull's water?
Lead was measured at 1.8 ppb (90th percentile). 3 violations are on record.
How is Hull'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 Hull?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Hull's water come from?
Hull's water is sourced from Purchased ground water. The city has 2 water systems serving approximately 2,409 residents.
What health violations has Hull's water system had?
Hull has 1 health-based violation on record. The most recent violation was recorded in August 2005. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 1 violation remains unresolved.
Is Hull's groundwater at risk of contamination?
Hull 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 3 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 Hull's water compare to other cities?
Hull ranks #287 out of 436 cities in Iowa (better than 34% of state cities) and #4018 out of 15744 cities nationally (75th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.