City of South Sioux City

Published drinking-water records and contacts for City of South Sioux City. System NE3104309. Review sources and dates; not a real-time water assessment.

System ID: NE3104309
State or territory: NE
Published population served: 14043
System type (source code): CWS

Published records and dates

PFAS / lithium (EPA UCMR 5): 240 — 2023-10-30 – 2024-08-05
Lead and copper monitoring summaries: 12 — 1992-07-01 – 2025-12-31
Nebraska selected chemical sample panels: 2 — 2026-02-23 – 2026-09-21

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
Substance	Published result	Reporting limit	Sample date	Sampling location
11Cl-PF3OUdS	< 0.005 µg/L	0.005 µg/L	2024-08-05	Connection to GU Source / 9999
4:2 FTS	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
6:2 FTS	< 0.005 µg/L	0.005 µg/L	2024-08-05	Connection to GU Source / 9999
8:2 FTS	< 0.005 µg/L	0.005 µg/L	2024-08-05	Connection to GU Source / 9999
9Cl-PF3ONS	< 0.002 µg/L	0.002 µg/L	2024-08-05	Connection to GU Source / 9999
ADONA	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
HFPO-DA	< 0.005 µg/L	0.005 µg/L	2024-08-05	Connection to GU Source / 9999
NEtFOSAA	< 0.005 µg/L	0.005 µg/L	2024-08-05	Connection to GU Source / 9999
NFDHA	< 0.02 µg/L	0.02 µg/L	2024-08-05	Connection to GU Source / 9999
NMeFOSAA	< 0.006 µg/L	0.006 µg/L	2024-08-05	Connection to GU Source / 9999
PFBA	< 0.005 µg/L	0.005 µg/L	2024-08-05	Connection to GU Source / 9999
PFBS	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
PFDA	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
PFDoA	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
PFEESA	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
PFHpA	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
PFHpS	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
PFHxA	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
PFHxS	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
PFMBA	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
PFMPA	< 0.004 µg/L	0.004 µg/L	2024-08-05	Connection to GU Source / 9999
PFNA	< 0.004 µg/L	0.004 µg/L	2024-08-05	Connection to GU Source / 9999
PFOA	< 0.004 µg/L	0.004 µg/L	2024-08-05	Connection to GU Source / 9999
PFOS	< 0.004 µg/L	0.004 µg/L	2024-08-05	Connection to GU Source / 9999
PFPeA	< 0.003 µg/L	0.003 µg/L	2024-08-05	Connection to GU Source / 9999
PFPeS	< 0.004 µg/L	0.004 µg/L	2024-08-05	Connection to GU Source / 9999
PFTA	< 0.008 µg/L	0.008 µg/L	2024-08-05	Connection to GU Source / 9999
PFTrDA	< 0.007 µg/L	0.007 µg/L	2024-08-05	Connection to GU Source / 9999
PFUnA	< 0.002 µg/L	0.002 µg/L	2024-08-05	Connection to GU Source / 9999
lithium	70.1 µg/L	9 µg/L	2024-08-05	Connection to GU Source / 9999

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
Substance	Published 90th percentile	Monitoring period	Source quarter
Lead (PB90)	0.0011 mg/L	2023-01-01 – 2025-12-31	2026Q3
Lead (PB90)	0.00366 mg/L	2020-01-01 – 2022-12-31	2026Q3
Lead (PB90)	0.00386 mg/L	2017-01-01 – 2019-12-31	2026Q3
Lead (PB90)	0.0055 mg/L	2014-01-01 – 2016-12-31	2026Q3
Lead (PB90)	0.00422 mg/L	2011-01-01 – 2013-12-31	2026Q3
Lead (PB90)	0.00451 mg/L	2008-01-01 – 2010-12-31	2026Q3
Lead (PB90)	0.00451 mg/L	2008-01-01 – 2010-10-31	2026Q3
Lead (PB90)	0.004 mg/L	2005-01-01 – 2007-12-31	2026Q3

Twelve most recent imported state laboratory records
Substance	Published result	Sample date	Location / source
NITRATE-NITRITE	0.301 mg/L	2026-09-21	EP1 / Nebraska selected chemical sample panels
NITRATE-NITRITE	0.329 mg/L	2026-02-23	EP1 / Nebraska selected chemical sample panels

State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.

Download state records with source notes (CSV)

Published compliance history

0 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
Nebraska selected chemical sample panels — last successful check: 2026-10-17

Administrative contact (EPA filing)

Hedquist, Lance: 402-494-7517

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records