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WQARF | Lake Havasu & Holly - Overview


Lake Havasu Avenue and Holly Avenue | Overview

Revised On: Jan. 4, 2024 - 10:43 a.m.

Registry placement date: Dec. 4, 2017

Score: 50

County: Mohave


Lake Havasu City, approximately bounded to the north by Centers Avenue, to the south by Holly Avenue, to the east by San Juan Drive and to the west by Aviation Drive.

If you own a private well, live in or near the site boundaries, and have not had your well tested, please contact ADEQ.

Contaminants of Concern

Tetrachloroethene (PCE), trichloroethene (TCE), and their degradation products, nitrate and chromium

Action Taken

ADEQ completed the Preliminary Investigation (PI) for the site in 2015. The site was then listed on the WQARF registry in December 2017. The Remedial Investigation (RI) began in 2018, and included soil and soil-gas sampling, groundwater borings, and installation of monitoring wells to define the nature and extent of the contamination present at the site. Groundwater samples were also collected to test possible ways of treating the contaminated water at the site. The Final RI and Feasibility Study (FS) Work Plan were released Dec. 29, 2020. The FS Report was released in September 2022 and presented three possible cleanup scenarios.

ADEQ is currently evaluating the cleanup scenarios presented in the FS and is preparing the Proposed Remedial Action Plan (PRAP). The PRAP Report will present the proposed remedy for the site and will be released for public comment, anticipated to be in the first half of 2023.


An Early Response Action (ERA) using in situ bioremediation is currently underway to address groundwater contamination at the site. This ERA was undertaken to be protective of Lake Havasu City’s water supply and is anticipated to reduce the timeframe and costs associated with the final remedy at the site.

Community Advisory Board (CAB)

A Community Advisory Board (CAB) is currently being formed for this site. If interested in serving on the CAB, please contact the Community Involvement Coordinator.