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PUBLIC WATER SYSTEM REPORT

Is SIOUX CITY WATER SUPPLY Water Safe to Drink in 2026?

Iowa · PWSID IA9778054 · Surface water

Population served
85,791
Cities served
SIOUX CITY
State / jurisdiction
Iowa (IA)
PWSID
IA9778054
F
TAP WATER GRADE
High Risk
Model score 26/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
133 violation record(s) in the latest EPA SDWA quarterly snapshotPFAS above EPA MCL (UCMR5 regulated compounds)
CONTAMINANTS — EPA UCMR5 MONITORING
Compound
Level (ppt)
EPA limit
Health guideline
Status
PFHxSregulated
35.0
10 ppt
Exceeds
Above health advisory
PFHxA
33.0
—
Within / n/a
Unregulated (monitored)
PFPeA
22.0
—
Within / n/a
Unregulated (monitored)
PFBS
21.0
—
Within / n/a
Unregulated (monitored)
PFPeS
14.0
—
Within / n/a
Unregulated (monitored)
PFBA
9.2
—
Within / n/a
Unregulated (monitored)
PFOAregulated
6.0
4 ppt
Exceeds
Above health advisory
PFHpA
4.8
—
Within / n/a
Unregulated (monitored)
PFOSregulated
4.3
4 ppt
Exceeds
Above health advisory

Source: EPA UCMR5 · ppt = parts per trillion · MCL = enforceable limit for regulated PFAS

Official Consumer Confidence Report (CCR)

The official 2026 CCR for SIOUX CITY WATER SUPPLY has not yet been published on WaterCheckup.

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Residents: Your public water system is required by EPA to publish an annual CCR by July 1st each year. Contact SIOUX CITY WATER SUPPLYdirectly to request a copy, or check the EPA's national CCR portal at cfpub.epa.gov/ccr.

VIOLATIONS HISTORY (FEDERAL SNAPSHOT)

EPA’s national SDWA quarterly files associate 133 violation-related records with this system in the same reporting quarter as the public water system snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.

Get alerts if this system's EPA data changes:
WHAT TO DO ABOUT IT

Based on SIOUX CITY WATER SUPPLY's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.

Clean water splash — certified water filter recommendations

Certified Filter Recommendations

Matched to what's actually in your water

TOP PICKS FOR SIOUX CITY WATER SUPPLY
⚠ EPA violations / contaminants in monitoring data
#1
Waterdrop G3P600 RO
EDITORS PICK
Waterdrop  ·  ~$439
Tankless 600 GPD, removes 99%+ PFAS & lead, 10-stage filtration. Smart faucet TDS display.
WHY THIS FOR SIOUX CITY WATER SUPPLY · Chosen for SIOUX CITY WATER SUPPLY because PFAS was detected at 35 ppt in UCMR5 — above the 4 ppt limit for some regulated compounds — and this system shows 133 violation record(s) in the latest federal snapshot. RO removes 99%+ of PFAS at the tap.
#2
Aquasana SmartFlow RO
MOST CERTIFIED
Aquasana  ·  ~$449
WQA Gold Seal + NSF 42/53/58/401. Most certifications of any under-sink RO. Removes 90+ contaminants.
#3
AquaTru Under-Sink RO
EASIEST FILTER CHANGE
AquaTru  ·  ~$375
NSF 42/53/58 certified. Quick-change filters, no tools. Compact tankless design, 4-stage filtration.
Not sure which filter is right for you? Take the 3-question quiz →
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