Customer Service News

New Rate Structure Change



SGWASA PFAS Information


FOR IMMEDIATE RELEASE:

March 16, 2023 (Butner, NC): During the months of September, October, and November 2022, the Department of Environmental Quality (DEQ) collected water samples at SGWASA's water treatment plant to analyze PFAS levels. The testing and analysis effort by the DEQ was part of a state-wide program to test water utilities. The term PFAS describes a class of compounds commonly referred to as “forever chemicals”, as they do not break down and remain constant in the environment through the water and land. PFAS can be found in products and materials used regularly by most citizens, such as lotion, wax paper, water bottles, cleaning products, non-stick cookware, floss, and more.

Recently, the South Granville Water & Sewer Authority (SGWASA) received the fall 2022 DEQ PFAS test results.  Water samples were collected at two sites at the water plant. One sample site was at the raw (unfinished) water location for water coming into the water plant from Lake Holt. The other sample was collected at the finished drinking water location for water coming out of the SGWASA water plant.  The DEQ has provided the test results for all water utilities that were tested, including SGWASA, at the following website: DEQ public water systems sampling results 

In 2019, the North Carolina Per and Polyfuoroalkyl Substances Testing (PFAST) Network performed statewide sampling. SGWASA participated in this testing project. For more information on this testing and the testing results, please view the following website: https://www.sgwasa.org/news/post/4729/   

Following are the results from the 2022 DEQ water quality sampling for PFAS.  The test results are provided in a table for easy viewing and interpretation.  The 2019 PFAST Network PFAS test results are also provided as a comparison to the most recent 2022 DEQ water testing results.

***Note: The 2022 Water Treatment Plant Upgrade allowed SGWASA to increase the amount of carbon used in the water purification process, thus providing for improved water quality and lower PFAS values in the Finished Drinking Water, as shown in the table below. 

 
Raw Water Intake PFOA PFOS PFOA/PFOS Total Total PFAS
Raw Water-PFAS 9/26/22 (ng/L) 10.1 19.7 29.8 39.3
Raw Water -PFAS 10/19/22 (ng/L) 10.7 23.5 34.2 41.3
Raw Water-PFAS 11/17/22 (ng/L) 10.7 27.9 38.6 53.1
Average (ng/L) 10.5 23.7 34.2 44.6
Finished Drinking Water PFOA PFOS PFOA/PFOS Total Total PFAS
Test Finished Water PFAS 9/26/22 (ng/L) 6.7 15.2 21.9 40.6
Test Finished Water PFAS 10/19/22 (ng/L) 6.8 16.0 22.8 43.6
Test Finished Water PFAS 11/17/22 (ng/L) 8.5 17.4 25.9 45.1
Average (ng/L) 7.3 16.2 23.5 43.1
Finished Drinking Water Test Results Comparison PFOA PFOS Total PFOA/PFOS Total PFAS
Test Finished Drinking Water PFAS 6/11/2019 (ng/L) 11.8 22.5 34.3 49.4
* Test Finished Drinking Water Average PFAS 9/26/22 thru 11/17/22 (ng/L) 7.3 16.2 23.5 43.1
Data Difference Between Test Dates -4.5 -6.3 -10.8 -6.3
* Note: 2022 Water Treatment Plant Upgrade allowed SGWASA to increase the amount of carbon used in the water purification process, thus providing for improved water quality and lower PFAS values. 

On March 14, 2023, the Environmental Protection Agency (EPA)  announced the proposed National Primary Drinking Water Regulation (NPDWR) for six perfluoroalkyl and poly-fluoroalkyl substances (PFAS).

SGWASA remains proactive in combatting the impact of PFAS being deposited into our ecosystem. Our top priority is to provide quality water and sanitary sewer services to our customers in an efficient, sustainable, and environmentally conscious manner. We are concerned about PFAS discoveries in the environment and are taking an aggressive approach to testing, managing, and processing PFAS contributing to SGWASA’s drinking water source: Lake Holt.

The authority has prioritized upgrading SGWASA's treatment facility to align with the EPA’s updated regulations, testing, and processing methods. The SGWASA Board approved $41,300 to ECS Southeast, LLP, to perform additional PFAS water testing in Lake Holt during the next year. 

For more information on PFAS, please see the EPA’s website at https://www.epa.gov/pfas.

Please stay up to date on this topic via the SGWASA website.


Issued 3/16/23 by the South Granville Water and Sewer Authority 

Krystle Lee, PIO & Board Secretary

919-575-3367

klee@sgwasa.org


Help Prevent Sewer Sanitary Overflows


Improper disposal of fats, oils, and grease (FOG) cause hazard to public health and the sewer systems. 


Sewer overflows and backups can cause health hazards and pose threat to the environment. Use these easy safety standards to help prevent fats, oils, and grease from overwhelming the water mains and sewer lines.


The second leading cause of all sewer overflows is grease blockages. Grease can get into the sewer from household drains as well as from poorly maintained grease traps in restaurants and other businesses.


Follow these three easy steps to aid in reducing the amount of FOG found impacting sewer systems.





For more information, please call (919) 575-3111 ext. 101. or email sthomas@sgwasa.org.


What Are SGWASA's Levels for PFOA and PFOS? See Results Here.


SGWASA Utility Customers:

 

On June 15, the US EPA reduced its health advisory levels (“HAL”) for two chemicals - PFOA and PFOS from 70 parts per trillion to interim levels of 0.004 and 0.02 parts per trillion.  SGWASA is committed to adhering to all state and federal water quality standards. SGWASA’s drinking water meets all current State and federal regulatory requirements, and therefore remains safe for consumption.  


The EPA’s interim HALs are guidance and not regulatory requirements.  EPA’s Interim HALs are meant to identify the amount of a chemical a person can be exposed to for their entire life (70 years) without it causing any adverse health impacts.  Results greater than the Health Advisory Levels do not mean that there is an emergency or violation.  Accordingly, exceedances of these interim levels for some period going forward while EPA adopts regulatory requirements and water systems figure out how to meet those requirements, does not mean that public health is at risk or that public drinking water is unsafe.  For more information on PFAS, please review the following website link: https://www.epa.gov/pfas/pfas-explained   


What are SGWASA's Levels for PFOA and PFOS? 


Check out the following information from the North Carolina PFAS Testing Network. 



The source for the following information is: 

https://ncpfast.renci.org/media/reports2/SOUTH_GRANVILLE_WTR_SEWER_AUTHORITY_NC0239107_2019-06-11_X2019_08_02_10_59_58.html 


NC PFAST Quantitative Screening Results for Raw Drinking Water From The North Carolina PFAS Testing Unit


SOUTH GRANVILLE WTR&SEWER AUTHORITY (NC0239107), 2019-06-11

Disclaimer: The PFAS measurements reported here represent initial laboratory findings that have not been subjected to full validation and quality assurance/quality control procedures and should be considered preliminary.

As part of the North Carolina Per and Polyfuoroalkyl Substances Testing (PFAST) Network statewide sampling effort (ncpfastnetwork.com), a raw water sample collected from SOUTH GRANVILLE WTR&SEWER AUTHORITY (NC0239107) on 2019-06-11 by the Ferguson Lab was analyzed for 47 PFAS chemicals by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Concentrations of individual PFAS are reported in units of parts-per-trillion (ppt, i.e., nanogram of chemical per liter water).

PFAS compounds are not currently regulated as drinking water contaminants by the United States Environmental Protection Agency (US EPA) or the North Carolina Department of Environmental Quality (NC DEQ) and thus the measurements reported here are not intended to be used in enforcement actions. The US EPA has established a lifetime health advisory level (HAL) of 70 ppt for combined perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) in drinking water. In addition, the NC DHHS has established a provisional health goal based on risk assessment for GenX in drinking water of 140 ppt. These advisory levels can serve as reference values when evaluating PFAS concentrations reported below for raw drinking water.

Reporting Limit (RL): This is the lowest concentration that can be confidently quantified in water samples for an individual PFAS chemical. This level is a function of instrument sensitivity, reproducibility, and precision. The RL typically (but not always) represents the lowest concentration point on the calibration curve, and it is always higher (often much higher) than the method detection limit (MDL) for a given PFAS analyte.

Sum of PFOS and PFOA

The sum of PFOA and PFOS was 34.3 ppt. This represents 49% of the EPA HAL of 70 ppt for PFOA + PFOS.

GenX

GenX was not detected above its reporting limit.

Total PFAS

The total PFAS concentration was 49.4 ppt.

Summary of findings

Figure 1: Concentrations of individual PFAS compounds.


Table 1 Concentrations of PFAS compounds detected in parts-per-trillion (ppt). Gray values indicate compounds below the reporting limit (RL). Bold rows indicate occurence in excess of the EPA Health Advisory Limit (HAL) for PFOS + PFOA of 70 ppt.



Please stay up to date on this topic and other news topics by monitoring our website at www.sgwasa.org 

Issued 8/5/22 by the South Granville Water and Sewer Authority
Scott N. Schroyer, Executive Director
919-575-3367


customerservice@sgwasa.org


US EPA’s Recent Interim Health Advisory Levels for PFOA and PFOS


SGWASA Utility Customers:

 

On June 15, the US EPA reduced its health advisory levels (“HAL”) for two chemicals - PFOA and PFOS from 70 parts per trillion to interim levels of 0.004 and 0.02 parts per trillion.  A part per trillion is 1 drop of water in an Olympic size swimming pool (660,430 gallons of water).  This is an incredible reduction from the 2016 HAL (70 drops of PFOA/PFOS in the Olympic-sized pool now down to just a tiny fraction of one drop) that leaves many water systems and well water users around the country above the interim HALs. These levels are so low they cannot even be measured.

 

SGWASA is committed to adhering to all state and federal water quality standards and SGWASA’s drinking water meets all State and federal regulatory requirements, and therefore remains safe for consumption. 


What Are SGWASA's Levels for PFOA and PFOS? Click Here.

 

With respect to PFAS, water utilities, such as SGWASA, are “passive receivers” of PFAS. We do not produce or manufacture PFAS. Instead, these chemicals are present in source waters that are treated to produce drinking water.  PFAS chemicals have been used in all sorts of products that the public interacts with daily.   The products range from takeout food containers, non-stick cookware, cosmetics, waterproof clothing, fabric softener, to a whole host of other consumer/household products. For more information on PFAS, please review the following website link: https://www.epa.gov/pfas/pfas-explained   

 

Following the June 15, 2022 announcement by the US EPA regarding the HAL’s for PFOA and PFOS, SGWASA has been engaged with Hazen & Sawyer consultants to assist us on our journey with PFAS/PFOS compliance, communications, testing (we anticipate PFAS testing this fall; results to the public will follow), and mitigation strategies to adhere to state and federal water quality standards. Hazen & Sawyer guided SGWASA in a similar manner most recently with the $14,000,000 water treatment plant disinfection byproducts improvement project that was completed earlier this year.  This project shows SGWASA’s commitment to our customers to provide improved water quality that meets state and federal water quality standards. 

 

The EPA’s interim HALs are guidance and not regulatory requirements.   EPA’s Interim HALs are meant to identify the amount of a chemical a person can be exposed to for their entire life (70 years) without it causing any adverse health impacts.  Results greater than the Health Advisory Levels do not mean that there is an emergency or violation.  Accordingly, exceedances of these interim levels for some period going forward while EPA adopts regulatory requirements and water systems figure out how to meet those requirements, does not mean that public health is at risk or that public drinking water is unsafe.  

 

For now, please know that SGWASA continues to work diligently to characterize any PFAS chemicals in our systems and to minimize or eliminate the loadings. Furthermore, SGWASA will continue to strive to minimize PFAS levels while the US EPA adopts regulatory levels that we will then ensure we meet.   We expect those regulatory levels will be higher than the Interim HALs for PFOS and PFOA which were announced recently. 

 

SGWASA continues to keep customers informed about this important topic by publishing information on our website, in our utility bills, and at the monthly Board of Directors meetings. 

 

 

 


Please stay up to date on this topic and other news topics by monitoring our website at www.sgwasa.org 

Issued: 7/27/22

Updated:8/10/22  

By: The South Granville Water and Sewer Authority
Scott N. Schroyer, Executive Director
919-575-3367
customerservice@sgwasa.org

 

 


SGWASA Customer Service Hours



  • Business Office hours are 8:30 am – 4:30 pm Monday thru Friday.

  • New Customers - Utility Service Application Processing
    • Please complete your application and place it in drop box, located in the parking lot. 
    • Should an application require an in-person processing, then these can occur by appointment only on Tuesday, Wednesday, and Thursday at specific hours of the day.  Please review the following: 
      • 30-minute appointment blocks will be scheduled based on availability. 
      • Please contact Customer Service via phone 919-575-3367 or via email at customerservice@sgwasa.org to arrange an appointment.

  • Utility Disconnections For Non-Payment - Reconnection
    • Payments received by 3:00pm on cutoff day will be reconnected the same day. 
    • Payments received after 3:00pm on cutoff day will be reconnected the next business day.