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U.S. EPA Permits under the Clean Water Act

Puerto Rico Aqueduct and Sewer Authority
Patillas WTP NPDES No. PR0025526

NOTICE for PUBLIC COMMENT

PRASA Patillas Water Treatment Plant
Patillas, Puerto Rico

SUMMARY

The Puerto Rico Aqueduct and Sewer Authority (PRASA) has

applied for renewal of its National Pollutant Discharge Elimination System

(NPDES) permit for the Patillas Water Treatment Plant (WTP) in Patillas.

The Patillas Water Treatment Plant (WTP) is a conventional plant that
treats water from the Patillas Lake to provide clean drinking water to the
residents of the Municipality of Patillas and other municipalities located
in the southeastern portion of Puerto Rico. Wastewater from the
treatment plant is discharged to the Patillas Lake.

The NPDES permit ensures that the amount of discharge and the amount
of contaminants in the discharge remains below levels that are safe for
the environment and public health consumption.

How to Access the Draft
Permit Documents

Copies of the draft permit documents can

be found on EPA's website at:
www.eDa.qov/reqion02/water/Dermits.html

Hard copies are located at:

Casa Alcaldia de Patillas.

Chemicals

Water
from

Discharge
to river

Drinking
water

Sludge to
landfill

PRASA PATILLAS FLOW SCHEMATIC

This diagram summarizes the WTP process.
This is based on a scenario where there is
maximum water flowing in the treatment
plant. The actual amounts of water may be
less.

DRAFT PERMIT CONDITIONS

The permit establishes numeric water quality effluent limitations for several pollutants, including pH, dissolved oxygen,
temperature, taste and odor, color, turbidity sulfates, flow, suspended solids, and metals.

The permit limits the WTP's numeric flow effluent pursuant to Puerto Rico Environmental Quality Board (PREQB) and
other conditions.

Under NPDES the permit specifies requirements for recording and reporting monitoring results of the numeric effluent
limitations described above.

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U.S. EPA Permits under the Clean Water Act
Puerto Rico Aqueduct and Sewer Authority
Patillas WTP NPDES No. PR0025526

How to Submit Public Comments

Any interested parties can submit written
comments on the draft permit during the public
comment period, which is between Thursday
August 4th, 2016 and Tuesday September 6th,
2016.

During this time, a public hearing can also be
requested on these documents.

The request must:

1.Be	in writing

2.	State the issues that you want to be
raised in the hearing

3.	Be submitted to the Director of the
Caribbean Environmental Protection
Division Office

The submission of written comments and/or
requests for a public hearing can be sent to:

EPA Region 2 Caribbean Environmental
Protection Division Office
City View Plaza II
Suite 70000, #48 RD. 165 Km, 1.2
Guaynabo, PR 00968

If you would like to request additional information
or have questions about the permit, please
contact:

Yasmin Laguer
EPA Region 2, CEPD
787-977-5848
Laguer.Yasmin@epa.gov

Patillas Water Treatment Plant
Facility Location

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WTP PATILLAS

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