WATER Quality


The Tribal Council, in adopting the WQCP, intends for the Forest Management Plan, the PDPO, Riparian Protection and Surface Mining Ordinance, and other Plans and Ordinances developed to improve the waters of the Reservation to be implemented as anti-degradation policies. These Tribal regulatory documents are to be used as the mechanism to identify the actions needed to protect surface and ground waters of the Reservation.    


The purpose of TEPA’s water quality standards are to:

The main objectives of TEPA’s monitoring efforts are to enable all of our water bodies to meet their respective designated uses. Collected data has and will continue to be used in development and implementation of future water quality standards, with an understanding of the unique characteristics of each water body with regard to natural water quality, existing and historical beneficial uses, and potential water quality problems and hazardous risks that may be posed to human health.

A number of streams within the Reservation are affected by certain land management practices including timber harvesting, cattle grazing, and runoff from agricultural pesticides (including those used on marijuana plots). TEPA is responsible for implementing measures to lessen the effects of these activities.

Monitoring the quality of all waters within the exterior boundaries of the Hoopa Valley Reservation is the responsibility of TEPA. This includes drinking water that must meet all applicable health-based standards. The following EPA goals to improve drinking water and water quality on American Indian Lands were described in their National Water Practices and End of Year Performance Report FY 2013. (SEE BELOW)


EPA National Water Program Guidance Addendum FY 2015

EPA Proposed Budget FY 2015 (Oct. 1, 2014 - Sept. 30, 2015)

Water Elements of EPA Strategic Plan FY 2014 - 2018

EPA GOALS are to protect and restore waters to ensure safe drinking water and that aquatic ecosystems sustain fish, plants, and wildlife and promote recreational and subsistence activities. Goals include:


Water Quality Control Plan Hoopa Valley Reservation 2002 - 2008

Case Studies in Tribal Water Quality Standards Programs - EPA 2006

Water Quality Monitoring by TEPA 2008-2012

EPA National Water Program Guidance 2014  

The public drinking water systems regulated by EPA and delegated states and tribes, provide drinking water to 90 percent of Americans. Providing safe drinking water is a partnership that involves EPA, the states, tribes, water systems and their operators.  Private, individual household wells, are not regulated by EPA.

Water pollution prevention and control measures are critical to improving water quality and reducing the need for costly wastewater and drinking water treatment. Because water pollution can come from many different sources, a variety of pollution prevention and control measures are needed to monitor and mediate the following:

EPA Fiscal Year 2013 National Water Program Performance Results

The Hoopa Valley Tribal EPA monitors Nutrients on the Klamath River at Saints Rest Bar from mid May to mid October.  The graph for Water Years 2012 through 2015 show exceedances for both Total Nitrogen and Total Phosphorus from approximately mid June through the end of the sample season in October.

Klamath River “Saints Rest Bar”

The Hoopa Valley Tribal EPA monitors Nutrients on the Klamath River at Saints Rest Bar from mid May to mid October.  For Water Year 2016, the data shows exceedances for Total Nitrogen from May 11th to June 8th.  The graph for Total Phosphorus shows that the Klamath at Saints Rest remains under the threshold for this parameter.

The Hoopa Valley Tribal EPA Collects E. Coli samples from six major tributaries to the Trinity River and at two locations on the Trinity River within the reservation boundaries.  The graph below shows exceedances for Hostler, Campbell and Soctish creeks.  TEPA monitors E. Coli as a safeguard for recreational users during the summer months from June 1st through October 1st.  High E. Coli concentrations found in recreational waters can be attributed to illegal campsites too close to waterways, wild and domestic animals defecating in or near the water or refuse left by users including dirty diapers.

TEPA records Trinity River temperatures at the Red Rock Continuous Data Recorder (CDR) station from June 1st through October 15th. Current reading show high river temperatures for the period of 7/23/16 – 8/24/16. River temperatures above 21.1 °C exceeds the Hoopa Valley Tribe’s temperature standard for this time of the year, which poses a serious risk to salmon species migrating in the river.   

Hoopa Trinity River Temperatures

Redrock CDR Site

Blue-Green Algae Cyanobacteria