DAVENPORT UTILITY AUTH

Compiled by PlainEnviro Editorial, Environmental Data Editorial Team · July 13, 2026

PWSID: OK3004104 · Davenport, OK · Serves 881 people

Health Violations

DAVENPORT UTILITY AUTH has 130 health-based violations out of 130 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served

881

Total Violations

130

Health Violations

130

Source Type

Surface Water

DAVENPORT UTILITY AUTH (PWSID OK3004104) is a cws water system drawing from a surface water source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 881 people in Davenport, OK, and is subject to primacy enforcement by the Oklahoma drinking-water program.

The system's federal compliance record contains 130 total violations, with 130 classified as health-based (MCL exceedances or treatment-technique failures). 3 distinct contaminants have been cited, including Total Trihalomethanes (TTHM), Haloacetic Acids (HAA5), Total Coliform (RTCR). Recorded violations span 1991–2025.

A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Oklahoma state drinking-water program's public portal.

System Details

EPA ID (PWSID): OK3004104
System Type: CWS
Water Source: Surface Water
Location: Davenport, OK
Population Served: 881
Health Violations: Yes (130)

What contaminants are in this water system?

Contaminant	Violations	Health-Based
Total Trihalomethanes (TTHM)	104	104
Haloacetic Acids (HAA5)	20	20
Total Coliform (RTCR)	6	6

Violation History (130)

Contaminant	Type	Health	Date	Enforcement
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2025	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2025	-
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2025	4027797
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2025	-
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2025	4027797
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2025	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2025	4027750
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2025	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2025	4027750
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2025	-
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2024	4027746
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2024	-
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2024	4027746
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2024	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	4027742
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	4027733
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	4027742
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	4027742
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	4027742
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	4027733
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	4027742
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	4027742
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	4027741
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	4027725
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	4027731
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	4027741
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	4027741
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	4027725
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	4027731
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	4027741
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	4027740
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	4027740
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	4027720
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	4027740
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	4027740
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	4027720
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	4027721
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	4027739
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	4027739
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	4027721
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	4027721
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	4027739
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	4027739
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	4027721
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	4027712
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2020	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2019	4027704
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2019	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2018	4027703
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2018	4027713
Haloacetic Acids (HAA5)	MCL	Yes	Jan 1, 2018	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2018	4027713
Haloacetic Acids (HAA5)	MCL	Yes	Oct 1, 2017	4027679
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2017	4027713
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2017	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2017	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2017	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2017	4027713
Haloacetic Acids (HAA5)	MCL	Yes	Oct 1, 2016	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2016	4027713
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2016	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2016	4027713
Haloacetic Acids (HAA5)	MCL	Yes	Apr 1, 2016	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2016	4027713
Haloacetic Acids (HAA5)	MCL	Yes	Jan 1, 2016	4027701
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2016	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2015	4027713
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2015	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2015	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2015	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2015	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2014	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2014	4027713
Haloacetic Acids (HAA5)	MCL	Yes	Apr 1, 2014	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2014	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2014	4027713
Haloacetic Acids (HAA5)	MCL	Yes	Jan 1, 2014	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2013	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2013	4027713
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2012	4027794
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2012	4027793
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2012	4027792
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2012	4027791
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2011	4027790
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2011	4027789
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2011	4027788
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2011	4027787
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2010	4027786
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2010	4027785
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2010	4027784
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2010	4027783
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2009	4027782
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2009	4027781
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2009	4027780
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2009	4027779
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2008	4027778
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2008	4027777
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2008	4027776

Showing 100 of 130 violations.

Frequently Asked Questions

Is DAVENPORT UTILITY AUTH water safe to drink?

DAVENPORT UTILITY AUTH has 130 health-based violations out of 130 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed. The system uses surface water water as its source.

How many people does DAVENPORT UTILITY AUTH serve?

DAVENPORT UTILITY AUTH serves 881 people in Davenport, OK. It is classified as a CWS water system.

What violations does DAVENPORT UTILITY AUTH have?

DAVENPORT UTILITY AUTH has 130 total violations on record spanning 1991–2025. 130 are health-based violations involving contaminants exceeding EPA limits.

What contaminants have been found in DAVENPORT UTILITY AUTH water?

Violations have been recorded for 3 contaminants. The most frequent: Total Trihalomethanes (TTHM), Haloacetic Acids (HAA5), Total Coliform (RTCR).

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About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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