Cole County Pwsd 4

Published drinking-water records and contacts for Cole County Pwsd 4. System MO3024163. Review sources and dates; not a real-time water assessment.

System ID: MO3024163
State or territory: MO
Published population served: 7568
System type (source code): CWS

Published records and dates

PFAS / lithium (EPA UCMR 5): 240 — 2025-06-16 – 2025-12-10
Lead and copper monitoring summaries: 22 — 1993-07-01 – 2024-12-31
Missouri DNR PFAS samples — non-UCMR classes: 83 — 2025-06-16 – 2025-06-16

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	2025-12-10	COLE COUNTY PWSD 4 / TP16717
4:2 FTS	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18437
6:2 FTS	< 0.005 µg/L	0.005 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP16717
8:2 FTS	< 0.005 µg/L	0.005 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18437
9Cl-PF3ONS	< 0.002 µg/L	0.002 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18437
ADONA	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP14685
HFPO-DA	< 0.005 µg/L	0.005 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18437
NEtFOSAA	< 0.005 µg/L	0.005 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18437
NFDHA	< 0.02 µg/L	0.02 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18503
NMeFOSAA	< 0.006 µg/L	0.006 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP16717
PFBA	< 0.005 µg/L	0.005 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP14685
PFBS	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18503
PFDA	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP14685
PFDoA	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP16717
PFEESA	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP14685
PFHpA	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP14685
PFHpS	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18503
PFHxA	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP14685
PFHxS	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP16717
PFMBA	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18503
PFMPA	< 0.004 µg/L	0.004 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP14685
PFNA	< 0.004 µg/L	0.004 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18437
PFOA	< 0.004 µg/L	0.004 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18437
PFOS	< 0.004 µg/L	0.004 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP14685
PFPeA	< 0.003 µg/L	0.003 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18503
PFPeS	< 0.004 µg/L	0.004 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18503
PFTA	< 0.008 µg/L	0.008 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP16717
PFTrDA	< 0.007 µg/L	0.007 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP16717
PFUnA	< 0.002 µg/L	0.002 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP14685
lithium	< 9 µg/L	9 µg/L	2025-12-10	COLE COUNTY PWSD 4 / TP18503

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)	0.00881 mg/L	2022-01-01 – 2024-12-31	2026Q3
Lead (PB90)	0.00387 mg/L	2020-01-01 – 2022-12-31	2026Q3
Lead (PB90)	0.00387 mg/L	2019-01-01 – 2021-12-31	2026Q3
Lead (PB90)	0.00387 mg/L	2019-01-01 – 2021-12-31	2026Q3
Lead (PB90)	0.0137 mg/L	2017-01-01 – 2019-12-31	2026Q3
Lead (PB90)	0.0137 mg/L	2016-01-01 – 2018-12-31	2026Q3
Lead (PB90)	0.0137 mg/L	2016-01-01 – 2018-12-31	2026Q3
Lead (PB90)	0.00821 mg/L	2014-01-01 – 2016-12-31	2026Q3

Twelve most recent imported state laboratory records
Substance	Published result	Sample date	Location / source
PERFLUOROHEXANOIC ACID (PFHXA)	< 3 NG/L	2025-06-16	WELL # 4 - 6701 N BOUNDARY RD TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROBUTANOIC ACID (PFBA)	< 5 NG/L	2025-06-16	WELL # 3 - 7821 FOREST HILL DR TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
PERFLUORO PFMBA	< 3 NG/L	2025-06-16	WELL # 4 - 6701 N BOUNDARY RD TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROHEXANE SULFONIC ACID 4:2 FTS	< 3 NG/L	2025-06-16	WELL # 5 - WEST DRIVE TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROHEXANE SULFONIC ACID 4:2 FTS	< 3 NG/L	2025-06-16	WELL # 4 - 6701 N BOUNDARY RD TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
9CL-PF3ONS	< 2 NG/L	2025-06-16	WELL # 4 - 6701 N BOUNDARY RD TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROUNDECANOIC ACID (PFUNA)	< 2 NG/L	2025-06-16	WELL # 3 - 7821 FOREST HILL DR TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROTETRADECANOIC ACID (PFTA)	< 8 NG/L	2025-06-16	WELL # 3 - 7821 FOREST HILL DR TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
NETFOSAA	< 5 NG/L	2025-06-16	WELL # 3 - 7821 FOREST HILL DR TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
PERFLUORO PFMPA	< 4 NG/L	2025-06-16	WELL # 4 - 6701 N BOUNDARY RD TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROHEXANE SULFONIC ACID (PFHxS)	< 3 NG/L	2025-06-16	WELL # 3 - 7821 FOREST HILL DR TREATMENT / Missouri DNR PFAS samples — non-UCMR classes
HFPO-DA	< 5 NG/L	2025-06-16	WELL # 3 - 7821 FOREST HILL DR TREATMENT / Missouri DNR PFAS samples — non-UCMR classes

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

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

Twenty most recent imported compliance records
Rule / record	Period	Recorded status	Health-based (EPA classification)	Source quarter
Revised Total Coliform Rule / Monitoring, Routine (RTCR)	2025-12-01 – 2025-12-31	Resolved	No	2026Q3

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
Missouri DNR PFAS samples — non-UCMR classes — last successful check: 2026-10-15

Administrative contact (EPA filing)

Humphrey, Wilford L: 573-395-4578

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