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Puerto Rico Local Compliance

Commonwealth of Puerto Rico

At AQUALIS, we know Commonwealth of Puerto Rico's sustainable water compliance standards and manage regulator relations for our clients.

It is our mission to help you become compliant with these stormwater, wastewater and drinking water regulations through inspections, maintenance, repairs and rehabilitation services. As your water compliance provider, we handle the regulatory guidelines specific to Commonwealth of Puerto Rico and ensure that our services meet the highest compliant procedures to keep you in compliance with local regulators.

Last Updated 08/07/2026

Puerto Rico NPDES Permit

EPA’s 1999 stormwater Phase II regulations established small municipal separate storm sewer systems (MS4s) in urbanized areas, as well as small MS4s outside the urbanized areas that are designated by the permitting authority, to obtain NPDES permit coverage for their stormwater discharges.

Region 2 issued the first Small MS4 General Permit (Small MS4 GP) for those public entities in 2006 for the Commonwealth of Puerto Rico. The current Small MS4 GP and Small MS4 GP Fact Sheet went into effect on July 1, 2016.

The issued general permit requires MS4s to continue implementing and updating their existing Stormwater Management Program. EPA developed a Storm Water Management Program template that is designed to assist MS4s in selecting and incorporating section(s) that provide guidance with the six minimum control measures of the Small MS4 GP. There is a Stormwater Management Program (English Version) and a Stormwater Management Program (Spanish Version).

View State Page

Resources

NPDES Small MS4 General Permit and Fact Sheet

View Ordinances

The information on this page is provided for general informational purposes only and is not legal advice. Regulations change frequently — AQUALIS makes no warranty as to the accuracy or completeness of this content, and any reliance on it is at your own risk. Consult a qualified professional or your local regulatory authority to confirm requirements applicable to your specific property.

Services Offered in Commonwealth of Puerto Rico and Surrounding Area

Case Studies

From Diagnosis to Repair: How AQUALIS Solved a Repeat Erosion Problem No One Else Could in Wilmington, NC

With proper evaluation, AQUALIS developed a new engineering solution and performed a repair, serving as the single point of contact from diagnosis through construction.

Storm Pipe Repair and Rehabilitation in Delray Beach, Fla.

A sinkhole in a Delray Beach roadway exposed a major failure in a 36-inch storm pipe. AQUALIS uncovered the pipe, identified an unexpected utility-related break and used a custom concrete repair to restore the stormwater system without replacing the otherwise sound pipe.

CIPP Lining and Structural Pipe Repair in Sebring, Fla.

AQUALIS rehabilitated failing stormwater infrastructure at a commercial property in Sebring, Florida, using CIPP lining and structural pipe repair. Three pipe runs were lined, while two collapsed sections were excavated and replaced to restore the system.

Multiphase Stormwater Infrastructure Rehabilitation in Atl. GA

AQUALIS helped an Atlanta, Georgia property owner rehabilitate aging stormwater infrastructure through a phased approach. The project addressed critical repairs while allowing the owner to plan for future stormwater improvements.

How a Hidden Pipe Failure Created a Sinkhole and Pond Erosion at a Commercial Property in Orange City, Fla.

A hidden stormwater pipe failure caused a sinkhole and pond erosion at a commercial property in Orange City, Florida. AQUALIS identified the damage through CCTV inspection and completed pipe and pond repairs to restore the stormwater system.

Lift Station Overhaul Restores Critical Sewage Infrastructure Tacoma, Wash.

AQUALIS completed a lift station overhaul for a critical wastewater system in Tacoma, Washington. The project replaced failing pumps, piping and electrical components, restoring reliable sanitary sewer service without disrupting terminal operations.

Green Infrastructure Protects Bridges in Fox Point, Wis.

Severe erosion threatened twin bridges spanning a ravine overlooking Lake Michigan. AQUALIS combined green and gray infrastructure to stabilize the slopes and protect critical infrastructure.

Comprehensive Lift Station Overhaul Restores Sanitary Service at Industrial Facility in Mount Vernon, Wash.

After years of continuous service, an industrial facility's sanitary lift station had reached the end of its serviceable life. AQUALIS executed a full overhaul, replacing the pumps, plumbing, controls and in-well hardware to return the station to reliable, code-compliant operation.

Sanitary Lift Station Grinder Installation and System Reliability Improvement in Katy, Texas

AQUALIS addressed recurring sanitary lift station failures at a retail facility in Katy, TX, by identifying the upstream solids issue driving repeated emergency callouts. The project included installation of an inline Muffin Monster grinder, controls integration and full site restoration to improve system reliability and reduce reactive maintenance.

Parking Lot Sinkhole Leads to Underground Pipeline Reconstruction in Springfield, Va.

A large sinkhole at a commercial property in Springfield, Virginia led to full reconstruction of the site’s underground stormwater detention system. AQUALIS managed the phased demolition, geotechnical evaluation, utility coordination and installation to restore long-term stability and performance.

Manhole Root Intrusion Repair and System Assessment in Miami, Fla.

Sediment buildup, buried structures and root intrusion prompted a Miami shopping center to partner with AQUALIS to inspect, clean and restore key components of its stormwater system

How Stormwater Pipe Inspection & UV Rehabilitation Restored Flow in New Bern, N.C.

A facility relies on an underground stormwater system to move runoff to a nearby retention basin. A 36-inch pipe plays a key role, but concerns emerged as flooding occurred during heavier rainfall.

Did you receive an NOV? Have an urgent need? We can help.

Notices of Violation (NOVs) or Corrective Notices should be taken seriously. Contact AQUALIS today to learn how to resolve the issue and comply with regulations.