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Community Water System · PWS AZ0408022

Lake Havasu City Of

Lake Havasu City, Arizona 86404 - drinking water served from groundwater sources to 54,610 people, tracked in EPA SDWIS and UCMR5.

54,610
People served
312
EPA violations
3
Health-based
1 PFAS
UCMR5 result

The verdict

EPA records 312 drinking-water violations at Lake Havasu City Of, 1% of them health-based - above the Arizona per-system average, and UCMR5 testing detected 1 PFAS compound.

312
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
54,610
People served by this system
1
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lake Havasu City Of

Lake Havasu City Of is a local-owned community water system that delivers drinking water to 54,610 residents in Lake Havasu City, Arizona (Mohave County) through 29,600 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 312 total violations for this system , of which 3 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 290 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Chlorine, recorded in 10 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 3 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Arizona, EPA tracks 1,493 public water systems serving 7,322,166 people, with 228,944 cumulative violations and 15,663 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 153.3 violations. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%).

Lake Havasu City Of's 312 violations sit above the Arizona average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
54,610
Total Violations
312
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
29,600
County
Mohave
School/Daycare
No
MCL Violations
3
Monitoring Violations
290
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 10 2020
2,4-D MR 8 2008
2,4,5-TP MR 8 2008
Consumer Confidence Rule Other 8 2015
Endrin MR 8 2008
Methoxychlor MR 8 2008
Nitrate MR 8 2019
BHC-GAMMA MR 8 2008
Toxaphene MR 8 2008
Endothall MR 7 2008
OXAMYL MR 7 2008
Picloram MR 7 2008
Dinoseb MR 7 2008
Hexachlorocyclopentadiene MR 7 2008
Carbofuran MR 7 2008
Heptachlor MR 7 2008
Heptachlor epoxide MR 7 2008
HEXACHLOROBENZENE MR 7 2008
Pentachlorophenol MR 7 2008
1,2-DIBROMO-3-CHLOROPROPANE MR 7 2008
ETHYLENE DIBROMIDE MR 7 2008
Chlordane MR 7 2008
Dalapon MR 7 2008
Arsenic MR 7 2019
LASSO MR 5 2008
Benzo(a)pyrene MR 5 2008
Glyphosate MR 4 2008
Di(2-ethylhexyl) adipate MR 4 2008
Simazine MR 4 2008
Di(2-ethylhexyl) phthalate MR 4 2008

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
NMeFOSAA 9/17/2025 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 9/17/2025 <7.00 ppt 7.00 ppt Not Detected
PFTA 9/17/2025 <8.00 ppt 8.00 ppt Not Detected
8:2 FTS 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFBS 9/17/2025 3.00 ppt 3.00 ppt Detected
PFHpA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpS 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
NFDHA 9/17/2025 <20.00 ppt 20.00 ppt Not Detected
PFEESA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
4:2 FTS 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
ADONA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/17/2025 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/17/2025 <2.00 ppt 2.00 ppt Not Detected
PFHxA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFDA 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFNA 9/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFHxS 9/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFBA 9/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFDoA 3/19/2025 <3.00 ppt 3.00 ppt Not Detected
PFUnA 3/19/2025 <2.00 ppt 2.00 ppt Not Detected
ADONA 3/19/2025 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 3/19/2025 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 3/19/2025 <5.00 ppt 5.00 ppt Not Detected
PFHxA 3/19/2025 <3.00 ppt 3.00 ppt Not Detected
PFDA 3/19/2025 <3.00 ppt 3.00 ppt Not Detected
PFOA 3/19/2025 <4.00 ppt 4.00 ppt Not Detected
PFOS 3/19/2025 <4.00 ppt 4.00 ppt Not Detected
PFNA 3/19/2025 <4.00 ppt 4.00 ppt Not Detected
PFHpS 3/19/2025 <3.00 ppt 3.00 ppt Not Detected
PFTA 3/19/2025 <8.00 ppt 8.00 ppt Not Detected
NEtFOSAA 3/19/2025 <5.00 ppt 5.00 ppt Not Detected
PFPeS 3/19/2025 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 3/19/2025 <7.00 ppt 7.00 ppt Not Detected
PFEESA 3/19/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 3/19/2025 <3.00 ppt 3.00 ppt Not Detected
PFMBA 3/19/2025 <3.00 ppt 3.00 ppt Not Detected
NFDHA 3/19/2025 <20.00 ppt 20.00 ppt Not Detected
PFMPA 3/19/2025 <4.00 ppt 4.00 ppt Not Detected
HFPO-DA 3/19/2025 <5.00 ppt 5.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Lake Havasu City Of.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID AZ0408022 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Arizona Drinking Water Authority

Arizona DEQ, Drinking Water Program is the primacy agency that licenses and inspects Lake Havasu City Of under EPA-delegated authority.

Open AZ regulator portal

Source: Arizona DEQ, Drinking Water Program

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2024 Groundwater Rule MR 2 SDWIS / AZ0408022 / 0700
2021 Revised Total Coliform Rule RPT 4 SDWIS / AZ0408022 / 8000
2020 Chlorine MR 10 SDWIS / AZ0408022 / 0999
2019 Nitrate MR 8 SDWIS / AZ0408022 / 1040
2019 Arsenic MR 7 SDWIS / AZ0408022 / 1005
2019 TTHM MR 4 SDWIS / AZ0408022 / 2950
2019 Total Haloacetic Acids (HAA5) MR 4 SDWIS / AZ0408022 / 2456
2015 Consumer Confidence Rule Other 8 SDWIS / AZ0408022 / 7000
2014 TTHM MCL 2 SDWIS / AZ0408022 / 2950
2008 2,4-D MR 8 SDWIS / AZ0408022 / 2105
2008 2,4,5-TP MR 8 SDWIS / AZ0408022 / 2110
2008 Endrin MR 8 SDWIS / AZ0408022 / 2005
2008 Methoxychlor MR 8 SDWIS / AZ0408022 / 2015
2008 BHC-GAMMA MR 8 SDWIS / AZ0408022 / 2010
2008 Toxaphene MR 8 SDWIS / AZ0408022 / 2020

How Lake Havasu City Of Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Lake Havasu City Of Arizona avg Federal benchmark
Total violations 312 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 10.5 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 95.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 54,610 4,904 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,493 regulated public water systems in Arizona.

Federal MCL reference, Safe Drinking Water Act thresholds
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Lake Havasu City Of water safe to drink?
Lake Havasu City Of (PWS ID: AZ0408022) has 312 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 54,610 people using Groundwater sources.
How many people does Lake Havasu City Of serve?
Lake Havasu City Of serves 54,610 people in Lake Havasu City, Arizona. It is a Local-owned system using Groundwater water sources with 29,600 service connections.
What type of violations does Lake Havasu City Of have?
Lake Havasu City Of has 312 total violations: 3 health-based violations (MCL exceedances or treatment failures), 290 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lake Havasu City Of water?
Yes. UCMR5 testing detected 1 PFAS compound in Lake Havasu City Of's water supply: PFBS. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Lake Havasu City Of use?
Lake Havasu City Of uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from?
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.