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PROGRAMS: Public Water Supply Supervision

The Department of Planning & Natural Resources (DPNR) is responsible for implementing and enforcing drinking water regulations in the USVI.

The Public Water Supply Supervision (PWSS) program of DPNR/DEP assures that all public water systems comply with Title 19, Part VI, Chapter 51, Subchapter 1303 of the V.I.C (PDF File).

Surveillance & Technical Assistance

  • Perform Sanitary Surveys of Public Water Systems

A Sanitary Survey is an on-site review of the water source, facilities, equipment, operation and maintenance procedures and management practices of a public water system for the purposes of evaluating the adequacy of such for producing and distributing safe drinking water.

Annual Registration and Inspection of Tankers That Haul Water For Human Consumption.

  • Collect surveillance samples during each Sanitary Survey and water hauler inspection. These samples are analyzed by a DPNR/EPA certified lab for microbiological contamination.

  • Provide technical assistance to water purveyors and investigate water quality complaints by the public.

Surveillance samples are collected during each sanitary survey and water hauler inspection, and are analyzed by a DPNR/EPA certified lab for microbiological contamination.

Data Management

DEP/PWSS maintains an inventory of public water systems in the Territory. The inventory contains administrative & technical information for each public water system, including water quality monitoring data.

 

Public water systems are required to self-monitor the quality of water distributed by their facilities by having samples collected and analyzed by a DPNR/EPA certified lab. The analytical results must then be submitted to DEP/PWSS.

 

The PWSS program regulates and enforces the following self-monitoring requirements:  

1.       Total Coliform Rule 

  • Routine monthly microbiological monitoring of total Coliform, and/or fecal Coliform or E. coli under section 1303-41 of the Virgin Islands Rules Regulations (V.I.R.R.) 

  • Routine daily turbidity sampling under section 1303-42 of the VIRR. 

2.       Lead and Copper Rule 

  • Lead and Copper monitoring every six (6) months under 40 Code of Federal Regulations (CFR), Chapter 1, Subpart I and section 1303-58 through 1303-67 of the VIRR. 

3.       Phase Chemical Rule 

  • Volatile Organic Compounds (VOCs) monitoring at various frequencies under 1303 of the V.I.C. 

  • Inorganic Compounds (lOCs) monitoring at various frequencies under 1303 of the V.I.C. 

  • Synthetic Organic Compounds (SOCs) monitoring at various frequencies under 1303 of the V.I.C. 

  • Radionuclides monitoring quarterly in accordance with 1303 of the V.I.C. 

  • Dlicrobiological contaminants pose an acute health risk and must therefore be monitored by all public water systems.  

  • Other contaminants pose a chronic health risk and are therefore required to be monitored only by public water systems that serve the same people on a daily basis for at least six (6) months out of the year.

Enforcement 

DEP/PWSS issues Notices of Violation (NOVs), Administrative orders, and civil Penalties to public water systems which are not in compliance with the monitoring requirements of the Safe Drinking Water Act. 

DEP/PWSS prepares an annual report on the compliance status of all public water systems. This report is made available to the public.

January 2000
 

The largest source of public water supply in the USVI is provided by desalinization plants (saltwater conversion), operated by the Virgin Islands Water and Power Authority (WAPA). 

WAPA produces upward of eight (8) million gallons per day (MGD) of desalinated water from plants located on the Islands of St. Thomas, St. Croix and St. John. 

Other major public water sources in the USVI include cisterns/rainwater collection systems and groundwater wells.  Groundwater produced by WAPA currently supplies 0.5 MGD (June 2003) of additional public water supply on St. Croix, and can produce up to 1.0 MGD (when well fields are operating at or near capacity).

The use of reverse osmosis treatment units to produce potable water from brackish wells or seawater is limited, but increasing throughout the Territory.  Reverse osmosis is a water treatment method whereby water is forced through a semi-permeable membrane (type of filter) which filters out impurities. 


Virgin Islands Water and Power Authority (WAPA)
 

 
 

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