Water Quality

 

Since the Authority operates its own distribution system, as well as being a part owner of the Forest Park Water facilities, sampling under the SDWA (Safe Drinking Water Act) is conducted independently by both utilities in accordance with appropriate requirements. This ensures that the Authority takes all distribution samples for which it is responsible and Forest Park Water takes all samples related to a surface water treatment facility. To some extent, this arrangement results in duplication of testing, but ensures an added measure of quality control.

Following is a complete listing of all contaminants monitored for by the Authority and Forest Park Water during the 2020 calendar year.

Volatile Organic Contaminants
Contaminant (Unit of Measurement) Violation
Yes/No
NWWA Level Detected Range MCLG MCL
Benzene (ppb); Carbon tetrachloride (ppb); Chlorobenzene (ppb); o-Dichlorobenzene (ppb); p-Dichlorobenzene (ppb); 1,2 - Dichloroethane (ppb); 1,1 - Dichloroethylene (ppb); cis-1,2-Dichloroethylene (ppb); trans-1,2-Dichloroethylene (ppb); Dichloromethane (ppb); 1,2-Dichloropropane (ppb); 1,2 - Dichlorobenzene (ppb); 1,4 - Dichlorobenzene (ppb); Ethylbenzene (ppb); Methyl tertiary butyl ether (MTBE*) (ppb); Methyl Chloride (ppb); Styrene (ppb); Tetrachloroethylene (ppb); 1,2,4-Trichlorobenzene (ppb); 1,1,1 - Trichloroethane (ppb); 1,1,2 -Trichloroethane (ppb); Trichloroethylene (ppb); Toluene (ppm); Vinyl Chloride (ppb) and Total Xylenes (ppm) were monitored but not detected.

Data presented in the above table is from calendar year 2020 monitoring performed in accordance with the regulations of the Pennsylvania Department of Environmental Protection.

*MTBE is a non-regulated contaminant that is routinely monitored by the Authority.
Inorganic Contaminants
Contaminant (Unit of Measurement) Action Level 90th Percent Value # of Sites Above AL MCLG Violation Y/N
Copper* (ppm) (9/2019) 1.3 0.387 0 out of 54 1.3 No
Lead* (ppb) (9/2019) 15 3.0 0 out of 54 0 No
Contaminant (Unit of Measurement) Violation
Yes/No
NWWA Level Detected Range MCLG MCL
Barium (ppm) No 0.19 N/A 2 2
Bromate (ppm) No 2.0 1.5-2.2 10 0
Nitrate (as Nitrogen) (ppm) No 1.87 0-4.03 10 10
Antimony (ppb); Arsenic (ppb); Beryllium (ppb); Cadmium (ppb); Chromium (ppb); Cyanide (ppb); Fluoride (ppb); Mercury (inorganic) (ppb); Nickel** (ppb); Nitrite (as Nitrogen) (ppm); Selenium (ppb) and Thallium (ppb) were monitored but not detected.

Data presented in the above table is from calendar year 2020 monitoring performed in accordance with the regulations of the Pennsylvania Department of Environmental Protection.

*Naturally occurring levels of lead and copper in the source water are non-detectable. This table represents the level detected in the 90th percentile of homes monitored in accordance with the US-EPA Lead and Copper Rule. None of the homes monitored exceeded the Action Level (AL).

**Nickel: Nickel is a non-regulated contaminant this is routinely monitored by the Authority.


Likely Source of Contamination: Barium: Discharge of drilling wastes, discharge from metal foundries, erosion of natural deposits; Copper: Corrosion of household plumbing; Lead: Corrosion of household plumbing; Nitrate (as Nitrogen): Runoff from fertilizer use, leaching from septic tanks, erosion of natural deposits.
Radioactive Contaminants
Contaminant (Unit of Measurement) Violation
Yes/No
NWWA Level Detected Range MCLG MCL
Gross Alpha (adjusted) (pCi/L) No 0.24 N/A 0 15
Combined Uranium (ug/L) No 6.04 3.17-13.23 0 30
Combined Radium (pCi/L) (226 + 228) No 2.67 2.51-2.84 0 5
Data presented in the above table is from the latest monitoring performed in accordance with the regulations of the Pennsylvania Department of Environmental Protection.

Likely Source of Contamination: Adjusted Gross Alpha, Combined Radium and Uranium: Erosion of natural deposits.
Microbiological Contaminants
Contaminant (Unit of Measurement) Violation
Yes/No
NWWA Level Detected Range MCLG MCL
Total Coliform Bacteria No 0 N/A 0 presence of coliform bacteria in 5% of monthly samples
Fecal Coliform and E. coli Bacteria No 0 N/A 0 a routine sample and repeat sample are total coliform positive, and one is also fecal coliform or E. coli positive
Turbidity (NTU) No 0.05 0.02-0.06 N/A TT
Data presented in the above table is from calendar year 2020 monitoring performed in accordance with the regulations of the Pennsylvania Department of Environmental Protection. Coliform bacteria, disinfection residual and turbidity are monitored on a continuous basis and reported monthly. 

100% of all turbidity samples were below 0.1 NTU. As a member of the Partnership for Safe Drinking Water, our goal is to maintain turbidity levels below 0.1 NTU. This was achieved throughout 2020.

Raw water monitoring for Giardia and Cryptosporidium was performed quarterly throughout 2020. Giardia was detected in 2 out of 4 samples. Cryptosporidium was detected in 3 out of 4 samples. 


Likely Source of Contamination: Giardia and Cryptosporidium: Naturally present in the environment; Turbidity: Soil runoff.
Synthetic Organic Contaminants (including Pesticides & Herbicides)
Contaminant (Unit of Measurement) Violation
Yes/No
NWWA Level Detected Range MCLG Goal MCL
1,2-Dibromo-3-chloropropane (ppb); 2,4-D (ppb); 2,4,5-TP (Silvex) (ppb); Alachlor (ppb); Atrazine (ppb); Benzo(a)pyrene (PAH) (nanograms/L); Carbofuran (ppb); Chlordane (ppb); Dalapon (ppb); Dicamba (ppb); Di(2-ethylhexyl) adipate (ppb); Di(2-ethylhexyl) phthalate (ppb); Dinoseb (ppb); Dioxin [2,3,7,8-TCDD] (ppb); Diquat (ppb); Endothall (ppb); Endrin (ppb); Ethylene Dibromide (ppb); Glyphosphate (ppb); Heptachlor (nanograms/L); Heptachlor epoxide (nanograms/L); Hexachlorobenzene (ppb); Hexachlorocyclopentadiene (ppb); Lindane (nanograms/L); Methoxychlor (ppb); Oxamyl [Vidate] (ppb); Pentachlorophenol (ppb); Picloram (ppb); Polychlorinated Biphenyls (PCBs) (ppb); Simazine (ppb) and Toxaphene (ppb) were monitored, but not detected.

Data presented in the above table is from calendar year 2020 monitoring performed in accordance with the regulations of the Pennsylvania Department of Environmental Protection.

 

Disinfectants & Disinfection By-Products
Contaminant (Unit of Measurement) Violation
Yes/No
NWWA Level Detected Range MCLG Goal MCL
Chlorine residual (mg/L) Distribution System No 0.85 0.22-1.49 4* 4**
Chlorine residual (mg/L) Entry Point No 1.25 0.42-1.79 4 4
Total Trihalomethanes (TTHM) (ppb) No 37.45 6.9-75.1 0 80
Haloacetic acids (HAA5) (ppb) No 12.91 0-25.4 0 60
Bromate (ppb) No 2.0 1.5-2.2 0 10
Data presented in the above table is from calendar year 2020 monitoring performed in accordance with the regulations of the Pennsylvania Department of Environmental Protection.

Likely Source of Contamination: Chlorine: Water additive used for disinfection; Total Trihalomethanes (TTHM): By-products of drinking water disinfection; Haloacetic acids (HAA5): By-products of drinking water disinfection; Bromate: By-product of drinking water disinfection.

*Maximum Residual Disinfection Level Goal (MRDLG).
**Maximum Residual Disinfection Level (MRDL).

 

Unregulated Contaminants Monitoring Rule (UCMR4)
Contaminant (Unit of Measurement) Level Detected Range
Anatoxin-a 0 N/A
Cylindrospermopsin 0 N/A
Total Microcystins & Nodularins 0 N/A
UCMR4 Monitoring for Cyanotoxins was performed at Forest Park from 7/7 to 10/21/2020.                                                                     
Unregulated Contaminants-Perfluorinated Compounds
Contaminant (Unit of Measurement) Level Detected Range
Perfluorooctanesulfonic Acid (PFOS) (ppt) N/D N/D
Perfluorooctanoic Acid (PFOA) (ppt) 0.90 0-2.4
The US-EPA Health Advisory Limit (HAL) is 70 parts per trillion (ppt) for individual or combined PFOA and PFOS. Data presented in the above table is from monthly monitoring of finished drinking water performed at the Forest Park Water Treatment Plant during 2020.

Environmental Sources of Contamination: Perfluorinated Compounds: Manmade chemicals used in fire-fighting foams, cleaners, cosmetics, greases and lubricants, paints, polishes, adhesives, and photographic films.

 

 In these tables you will find many terms and abbreviations you might not be familiar with. To help you better understand these terms, we've provided definitions.