Wakefield Community Letter 2022

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Town of Wakefield
DEPARTMENT OF PUBLIC WORKS
 

Public Water Supply
# 3305000

The Town of Wakefield uses an average of 2.07 million gallons of water per day. Most of the Town’s water is supplied by the MWRA through three separate connections and meters. The Broadway Treatment and Pumping Facility is used to supplement the MWRA supply and aid in times of high demand, such as during the summer or in firefighting circumstances. The Broadway Facility is also equipped to temporarily supply the entire Town in the event of an emergency interruption of one of the MWRA connections. The additional supply provided by the Broadway Facility is an indispensable part of Wakefield’s system.

WATER DEPARTMENT STAFF AND OPERATIONS

The Wakefield Public Works Water Division maintains and operates the Broadway Treatment Facility, approximately 110 miles of water mains, 900 fire hydrants, the Linden Street booster station, the Hart’s Hill standpipe, pressure reducing valves, blow-off valves, and multiple gate and service valves. We maintain our system by detecting leaks, repairing water main breaks, replacing old water mains, water meters, and hydrants, flushing water mains, and responding to the needs and concerns of our residents. Throughout the year, we conduct a thorough water sampling and testing program that complies with all State and Federal requirements. We also maintain an active Cross Connection Control Program, inspecting facilities and testing devices to protect the water system from contamination.

WATER ANALYSIS

Wakefield and the MWRA analyze water samples regularly to ensure compliance with drinking water standards. In 2022, we tested for more than 100 substances and only detected 6 regulated contaminants, all of which were reported below federal and state standards. Table 1 shows the detected amount of each contaminant. Not listed are the more than 100 regulated substances that were not detected in our water. For those persons who are restricting their sodium intake, we would like to provide supplemental information. Our most recent sodium testing in 2021 indicates a sodium level of 87.8 ppm, equal to 21 milligrams per 8 ounce serving. A “low” sodium diet allows consumption of water with 140 milligrams of sodium per 8 ounce serving. The Town of Wakefield successfully maintains lead and copper levels well below the EPA requirements. If you have any questions about lead in your drinking water and would like to have it tested, contact the Department of Public Works.

TOTAL COLIFORM RESULTS

Coliforms are bacteria that are naturally present in the environment. Coliforms are bacteria that are naturally present in the environment and are used as an indicator that other, potentially harmful, waterborne pathogens may be present or that a potential pathway exists through which contamination may enter the drinking water distribution system. We found coliforms indicating the need to look for potential problems in water treatment or distribution. When this occurs, we are required to conduct assessments to identify any problems that were found during these assessments. During the past year two Level 2 Assessments were required to be completed. A Level 2 Assessment is a very detailed study of the water system to identify potential problems and determine (if possible) why total coliform bacteria have been found in our water system on multiple occasions. Two Level 2 Assessments were completed. In addition, we were required to take 2 corrective actions, and we completed 2 of these actions. Water main replacement was ongoing near the positive coliform sampling sites. After deep cycling the standpipe tank and flushing parts of the distribution system, subsequent samples came back negative. We continue to monitor the water carefully each week for coliform bacteria and as required by our approved DEP Sampling Schedule for other contaminants.

UNREGULATED PFAS CONTAMINANTS

PFAS6 is a group of 6 different contaminants that are regulated by MassDEP as a group. Other PFAS chemicals are unregulated. Two of the 12 unregulated PFAS contaminants were detected

SubstanceAverage DetectedRange of Highest LevelLevel Detects Allowed
PFBS3.43 ppt2.6 - 4.4 pptNot Regulated
PFHxA3.63 ppt2.5 - 4.6 pptNot Regulated

SOURCE WATER ASSESSMENT

The DEP conducted a Source Water Assessment Program (SWAP) in 2004 to assess the susceptibility of the Crystal Lake supply to contamination. Based on their findings, DEP assigned a high susceptibility rank to Crystal Lake. However, the Town maintains treatment at Crystal Lake that meets or exceeds all drinking water standards and conducts extensive monitoring as described in this report to mitigate risk of contamination. The complete SWAP report is available at the Department of Public Works or online at: http://mass.gov/eea/docs/dep/water/drinking/swap/nero/3305000.pdf. To find out about public meetings, please call (781) 246-6318.

TABLE REGULATED CONTAMINANTS

 
ParameterUnitsMCL (Highest Level Allowed)Highest Level FoundMCLGViolationHow it gets in the water
Turbidity1NTUTT = 5 NTU0.6NSNOSoil runoff
Fluorideppm40.734NOWater additive that promotes strong teeth
Chlorineppm41.81 avg.
Range: 0.14-2.73
4NOWater disinfectant
Nitrateppm100.410NORunoff from fertilizer use; leaching from septic tanks; erosion of natural deposits
Total Trihalomethanesppb802353NSNOByproducts of drinking water disinfection
range of detection: 7.5-85.9^4
Haloacetic Acidsppb602293NSNOByproducts of drinking water disinfection
range of detection: 1.1 - 55.4
Perchlorateppb20.215NSNORocket propellants, fireworks, munitions, flares, blasting agents
LeadppbAL = 155560NOCorrosion in household plumbing systems
range of detection: 0.26 - 241 of 30 sites tested exceeded the AL
CopperppbAction Level = 1300516061300NOCorrosion in household plumbing systems
range of detection: 5 - 109^5No sites were above the AL
Bariumppm20.022NOErosion of natural deposits, common mineral in nature
PFAS6ppt20Average: 14
Range: 5.4-19
NSNOMoisture and oil resistant coatings on fabrics and other materials, firefighting foams
2,4-Dppb700.2770NORunoff from herbicide used on row crops
1 TT = Treatment Technique: Turbidity is a measure of treatment performance and regulated as a treatment technique. 2 Highest detected level is based on average of four quarterly samples of individual sample sites as required by regulation. 3 Highest average of four quarterly samples. 4 90th percentile of all samples taken. nd = not detected NS = No standard

Updated June 8, 2023