THE BOROUGH OF RIDGWAY

 

108 Main St.

Ridgway, Pa. 15853 

RIDGWAY WATER TREATMENT PLANT

TREATS, FILTERS AND PUMPS POTABLE WATER INTO THE BOROUGH WATER DISTRIBUTION SYSTEM

 

 

H.B. NORTON DAM

272,000,000 gallons of source water

LAUREL MILL RESERVOIR

1,500,000 gallons

MONTMORENCI STORAGE TANK

125,000 Gallons

WATER TREATMENT PLANT

IMPORTANT MESSAGES / WATER ALERTS.

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2018 ANNUAL DRINKING WATER QUALITY REPORT



                                      PWSID #:  6240012   NAME:  RIDGWAY BOROUGH WATER SYSTEM


 


Este informe contiene información importante acerca de su agua potable. Haga que alguien lo traduzca para usted, ó hable con alguien que lo entienda. (This report contains important information about your drinking water. Have someone translate it for you, or speak with someone who understands it.)


WATER SYSTEM INFORMATION:


This report shows our water quality and what it means. If you have any questions about this report or concerns about the quality of your water, please contact Rick McKnight at 772-3251. We want you to be informed about your water supply. If you want to learn more, please attend any of our regularly scheduled meetings. They are held on the third Monday of the month at 7:00 at the Ridgway Borough Municipal Building.



SOURCE(S) OF WATER:


Our source is surface water from H.B. Norton Dam located on Big Mill Creek in the Allegheny National Forest. Because of it's remote location there is very little contamination.


Some people may be more vulnerable to contaminants in drinking water than the general population.  Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections.  These people should seek advice about drinking water from their health care providers.  EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidiumand other microbial contaminants are available from the Safe Drinking Water Hotline (800-426-4791).


 Monitoring Your Water:


We routinely monitor for contaminants in your drinking water according to federal and state laws. A Source Water Protection Plan was also done in 2012. The following tables show the results of our monitoring for the period of January 1 to December 31, 2018. The State allows us to monitor for some contaminants less than once per year because the concentrations do not change frequently. Some of our data is from prior years in accordance with the Safe Drinking Water Act. The date has been noted on the sampling results table.


DEFINITIONS:


Action Level (AL) - The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.


Maximum Contaminant Level (MCL) - The highest level of a contaminant that is allowed in drinking water.  MCLs are set as close to the MCLGs as feasible using the best available treatment technology.


Maximum Contaminant Level Goal (MCLG) - The level of a contaminant in drinking water below which there is no known or expected risk to health.  MCLGs allow for a margin of safety.


Maximum Residual Disinfectant Level (MRDL) - The highest level of a disinfectant allowed in drinking water.  There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.


Maximum Residual Disinfectant Level Goal (MRDLG) - The level of a drinking water disinfectant below which there is no known or expected risk to health.  MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.


Minimum Residual Disinfectant Level (MinRDL) - The minimum level of residual disinfectant required at the entry point to the distribution system.


Treatment Technique (TT) - A required process intended to reduce the level of a contaminant in drinking water.


ppm = parts per million, or milligrams per liter (mg/L)


ppb = parts per billion, or micrograms per liter (μg/L)


Chemical Contaminants

Contaminant

MCL in CCR Units

MCLG

Level Detected

Range of Detections

Units

Sample Date

Violation Y/N

Sources of Contamination

CHLORINE

MRDL= 4

MRDL= 4

0.13

   0.13 – 0.38

ppm

10/18

N

 Water Additive used to control microbes.

FLUORIDE

2

4

0.73

 -

ppm

1/22/18

N

Water additive used to promote strong teeth.

TTHM

80

N/A

80

24 - 80

ppb

2018

N

By-product of drinking water disinfection.

HAA5

60

N/A

19

4 - 41

ppb

2018

N

By-product of drinking water disinfection

BARIUM

2

2

0.5

-

ppm

1/8/18

N

Drilling wastes and erosion of natural deposits .

NITRATE

10

10

0.1

-

ppm

8/1/18

N

Erosion of natural deposits.


 DETECTED SAMPLE RESULTS:



Entry Point Disinfectant Residual

Contaminant

Minimum Disinfectant

Residual

Lowest

Level Detected

Range of Detections

Units

Sample Date

Violation Y/N

Sources of Contamination

CHLORINE

0.2

0.4

0.4 – 1.1

ppm

04/22/18

N

Water additive used to control microbes.

 


Lead and Copper

Contaminant

Action Level (AL)

MCLG

90th Percentile Value

Units

# of Sites Above AL of Total Sites

Violation Y/N

Sources of

Contamination

LEAD

15

0

0

ppb

0 out of 20

N

Corrosion of household plumbing.

COPPER

1.3

1.3

0.067

ppm

0 out of 20

N

Corrosion of household plumbing.



Microbial

Contaminants

MCL

MCLG

Highest # or % of Positive Samples

Violation

Y/N

Sources of Contamination

TOTAL COLIFORM

BACTERIA

For systems that collect <40 samples/month:

    More than 1 positive monthly sample

For systems that collect 40 samples/month:

    5% of monthly samples are positive

0

0

       N

Naturally present in the environment.


 

Turbidity

Contaminant

MCL

MCLG

Level Detected

Sample

Date

Violation

Y/N

Sources of Contamination

TURBIDITY

TT=1 NTU for a single measurement

    0

0.22

7/2/18

N

Soil runoff.

 

TT= at least 95% of monthly samples<0.3 NTU

 

100%

2018

N

 


Total Organic Carbon (TOC)

Contaminant

Range of % Removal Required

Range of percent removal achieved

Number of quarters out of compliance

Violation Y/N

Sources of Contamination

TOC

35%

35% to 49%

N

N

Naturally present in the environment.



EDUCATIONAL INFORMATION:


The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs and wells. As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity. Contaminants that may be present in source water include:



Disinfection Byproducts
Loc.     3/6/2019 6/5/2019 9/7/2019 12/5/2019 LRAA OEL
ID Description Parameter(1) Results (mg/l Results (mg/l Results (mg/l Results (mg/l LRAA(2) ( mg/l) OEL(3) MG/L)
701 651 MONTMORENCI RD TTHMs 0.018 0.041 0.073 0.029 0.040 0.043
    HAA5s 0.016 0.021 0.016 0.013 0.017 0.016
712 132 N. BROAD (SHEETZ) TTHMs 0.018 0.035 0.065 0.027 0.036 0.039
    HAA5s 0.011 0.013 0.015 0.012 0.013 0.013
713 RT. 120 TTHMs 0.022 0.039 0.071 0.033 0.041 0.044
    HAA5s 0.012 0.018 0.015 0.012 0.014 0.014
715 2ND WARD TTHMs 0.013 0.032 0.063 0.025 0.033 0.036
    HAA5s 0.014 0.023 0.017 0.014 0.017 0.017
803 GALLAGHER RUN TTHMs 0.016 0.030 0.061 0.025 0.033 0.035
    HAA5s 0.013 0.021 0.012 0.014 0.015 0.015
Footnotes:              
(1) The Maximum Contaminant Level ("MCL") for TTHMs is 0.080 mg/l. The MCL for HAA5s is 0.060 mg/l. Compliance with the MCL is
based on the Locational Running Annual Average(LRAA) result.  
on the Locational Running Annual Average ("LRAA") result.  
(2) The LRAA is calculated by averaging the most recent 4 quarters of results for each individual sample location.  
(3) The Operational Evaluation Level ("OEL") is calculated for each location using the following formula: [ 2x(most recent quarter result)+
(previous quarter result) + (result from 2 quarters prior to most recent result)]4