CHANDLER

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

PWSID: OK1020702 · Chandler, OK · Serves 3,142 people

Health Violations

CHANDLER has 93 health-based violations out of 93 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served

3,142

Total Violations

Health Violations

Source Type

Surface Water

CHANDLER (PWSID OK1020702) 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 3,142 people in Chandler, OK, and is subject to primacy enforcement by the Oklahoma drinking-water program.

The system's federal compliance record contains 93 total violations, with 93 classified as health-based (MCL exceedances or treatment-technique failures). 7 distinct contaminants have been cited, including Total Trihalomethanes (TTHM), Chloroform, Haloacetic Acids (HAA5). Recorded violations span 1998–2024.

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): OK1020702
System Type: CWS
Water Source: Surface Water
Location: Chandler, OK
Population Served: 3,142
Health Violations: Yes (93)

What contaminants are in this water system?

Contaminant	Violations	Health-Based
Total Trihalomethanes (TTHM)	76	76
Chloroform	8	8
Haloacetic Acids (HAA5)	3	3
Turbidity	2	2
Total Coliform (RTCR)	2	2
Gross Alpha	1	1
Arsenic	1	1

Violation History (93)

Contaminant	Type	Health	Date	Enforcement
Gross Alpha	TT	Yes	Oct 17, 2024	9006540
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	9006503
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	9006503
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	9006503
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	9006503
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	9006503
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	9006503
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	9006502
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	9006502
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	9006494
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	9006502
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	9006502
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	9006502
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	9006494
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	9006502
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	9006501
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	9006501
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	9006491
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	9006501
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	9006501
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	9006501
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	9006491
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	9006501
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	9006500
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	9006500
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	9006479
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	9006500
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	9006500
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	9006479
Turbidity	TT	Yes	Aug 1, 2019	9006462
Turbidity	TT	Yes	Jul 1, 2019	9006462
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2018	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2018	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2017	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2017	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2017	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2017	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2016	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2016	9006463
Arsenic	TT	Yes	Apr 1, 2016	9006445
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2016	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2016	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2015	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2015	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2015	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2015	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2014	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2014	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2014	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2014	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2013	9006463
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2012	9006539
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2012	9006538
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2012	9006537
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2012	9006536
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2011	9006535
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2011	9006534
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2011	9006533
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2011	9006532
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2010	9006531
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2010	9006530
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2010	9006529
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2010	9006528
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2009	9006527
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2009	9006526
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2009	9006525
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2009	9006524
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2008	9006523
Chloroform	TT	Yes	Oct 1, 2008	9006426
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2008	9006522
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2008	9006521
Chloroform	TT	Yes	Jul 1, 2007	9006425
Chloroform	TT	Yes	Apr 1, 2007	9006424
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2007	9006520
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2007	9006519
Chloroform	TT	Yes	Jan 1, 2007	9006423
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2006	9006518
Chloroform	TT	Yes	Oct 1, 2006	9006422
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2006	9006517
Chloroform	TT	Yes	Jul 1, 2006	9006421
Chloroform	TT	Yes	Apr 1, 2006	9006419
Haloacetic Acids (HAA5)	MCL	Yes	Apr 1, 2006	9006420
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2006	9006516
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2006	9006515
Haloacetic Acids (HAA5)	MCL	Yes	Jan 1, 2006	9006418
Haloacetic Acids (HAA5)	MCL	Yes	Oct 1, 2004	9006416
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2004	9006514
Chloroform	TT	Yes	Oct 1, 2004	9006417
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2004	9006513
Total Coliform (RTCR)	MCL	Yes	Aug 1, 1998	9006410
Total Coliform (RTCR)	MCL	Yes	Jun 1, 1998	9006409

Frequently Asked Questions

Is CHANDLER water safe to drink?

CHANDLER has 93 health-based violations out of 93 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 CHANDLER serve?

CHANDLER serves 3,142 people in Chandler, OK. It is classified as a CWS water system.

What violations does CHANDLER have?

CHANDLER has 93 total violations on record spanning 1998–2024. 93 are health-based violations involving contaminants exceeding EPA limits.

What contaminants have been found in CHANDLER water?

Violations have been recorded for 7 contaminants. The most frequent: Total Trihalomethanes (TTHM), Chloroform, Haloacetic Acids (HAA5).

Nearby Water Systems

STROUD UTILITIES AUTHORITY

Stroud · 2,811 served

104 viol.

LINCOLN CO RW & SEWER DIST 4

Agra · 2,525 served

3 viol.

PRAGUE

Prague · 2,395 served

13 viol.

MEEKER PUBLIC WORKS AUTHORITY

Meeker · 1,044 served

3 viol.

DAVENPORT UTILITY AUTH

Davenport · 881 served

130 viol.

WELLSTON

Wellston · 825 served

Wellston · 575 served

Chandler · 400 served

18 viol.

Explore More

Oklahoma Water Systems → All States → Contaminants →

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.

Browse all → | Rankings →