PID advises bottled water only for drinking, cooking and brushing teeth for  all Paradise Irrigation District customers: Here's what residents should know.

PUBLIC NOTICE: APPROPRIATION LIMIT
The Board of Directors will consider adopting Resolution No. 2019-04 at its regular meeting on July 17, 2019 to establish the appropriation limit of the District at $1,649,619.00 for Fiscal Year 2019/20. View Document

Paradise Irrigation District has taken thousands of regulated and unregulated water samples during the past years to determine the presence of any radioactive, biological, inorganic, volatile and synthetic organic contaminants and monitor the treatment process. The tables below show only those contaminants that were detected in the water; some that were not detected are listed because our customers may be interested in seeing the results. The State Water Resources Control Board (State Board) requires us to monitor for certain substances less than once per year because the concentrations of these substances do not change significantly. In these cases, the most recent sample data are included, along with the year in which the sample was taken.Note that this is the report for sampling in 2019; most of the sampling was done before the Camp Fire on Nov. 8, 2018.

 

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PRIMARY HEALTH STANDARDS

Surface Water Supply Groundwater Supply  

SUBSTANCE
(UNIT OF MEASURE)

MCL

YEAR

SAMPLED

AVERAGE
DETECTED

RANGE
LOW-HIGH

YEAR
SAMPLED

AVERAGE
DETECED

RANGE
LOW-HIGH

MAJOR SOURCE IN DRINKING WATER

INORGANIC
Chromium (Total)
(ppb)
50 2013 ND ND 2014 3.4 3.4 Erosion of natural deposits.
Hexavalent Chromium
(ppb)
None 2015 0.11 0.11 2014 2.5 2.5 Erosion of natural deposits.
CLARITY
Turbidity (NTU)
(prior to treatment)
~ 2018 0.75 0.33-3.45 2016 0.18 0.18 Soil runoff.
Turbidity (NTU) (TT)
(treated water)
0.2 2018 0.04 0.04-0.05 NA NA NA Soil runoff.

 

Turbidity is a measurement of the cloudiness of the water. Turbidity measurement is a good indicator of the effectiveness of the filtration system. PID’s permit with State Drinking Division requires PID to deliver water with no more than 0.2 NTU.

 

RADIOLOGICAL
Radium 228 (pCi/L) 5 2018 2.2 2.2 2017 2.9 2.9 Erosion of natural deposits.
DISINFECTANT
Chlorine, Free Residual as Cl2
(ppm) (TT)
4 2018 0.67 0.49-0.89 NA NA NA Water additive used to control microbes.
DISINFECTANT BY-PRODUCTS
Bromodichlorometh-
ane
(ppb)
~ 2018 2.5 .1-3 NA NA NA Drinking water disinfection.
Chloroform (Trichloromethane) (ppb) ~ 2018 25.6 21-30 NA NA NA Drinking water disinfection.
Trihalomethanes, Total (ppb) 80 2018 28.25 23-33 NA NA NA Drinking water disinfection.
Dichloroacetic Acid (DCAA) (ppb) ~ 2018 11.3 8.2-19 NA NA NA Drinking water disinfection.
Trichloroacetic Acid (TCAA) (ppb) ~ 2018 16 12-32 NA NA NA Drinking water disinfection.
Haloacetic Acids, Total (ppb) 60 2018 28.5 21-51 NA NA NA Drinking water disinfection.
DISINFECTANT BY-PRODUCT PRECURSOR
Total Organic Carbon
(prior to treatment)
~ 2018 1.1 0.9-1.2 NA NA NA Decay of natural organic matter.

 BENZENE

SUBSTANCE
(UNIT OF MEASURE)
MCL YEAR SAMPLED AVERAGE DETECTED RANGE
LOW-HIGH
SAMPLING NOTE
 Benzene (ppb) 1 2018 0.12 ND-1.1 Nine samples were taken for benzene in 2018 after the Camp Fire. 

 

LEAD AND COPPER ANALYSIS

Every three years PID is required to sample at the customers’ faucets for lead and copper. This monitoring ensures our water is not too corrosive and does not leach unsafe levels of these metals into your drinking water. Compliance measurements are from the 90th percentile (the level measured at 90% of homes sampled). See “Corrosivity” section.

SUBSTANCE (UNIT OF MEASURE)   YEAR      SAMPLED  VIOLATION?  AL  PHG  (MCLG) AMOUNT
DETECTED (90th%TILE)
SCHOOLS REQUESTING SAMPLING SITES ABOVE AL/TOTAL SITES TYPICAL SOURCE
Copper (ppm at the 90th percentile) 2017 No 1.3 0.3 0.01 0 0/30 Internal corrosion of household plumbing.
Lead (ppb at the 90th percentile) 2017 No 15 0.2 ND 0 0/30 Internal corrosion of household plumbing.

 

 

SECONDARY AESTHETIC STANDARDS

Surface Water Supply Groundwater Supply  

CHEMICAL (UNIT OF MEASURE)

MCL

YEAR SAMPLED

AVERAGE DETECTED

RANGE
LOW-HIGH

YEAR SAMPLED

AVERAGE DETECTED

RANGE
LOW-HIGH

MAJOR SOURCE IN DRINKING WATER

Chloride (ppm) 500 2011 2.5 2.5 2014 1.3 1.3 Natural occurring substance.
Hardness (ppm) ~ 2016 28 28 2014 76 76 Naturally occurring substance.
Total Dissolved Solids (ppm) 500 2016 43 43 2014 150 150 Naturally occurring substance.
CORROSIVITY
Specific Conductance (uS/cm) 1600 2016 77 77 2014 160 160 A measurement of water's conductance.
Langelier Saturation Index * Non-Corrosive 2016 -1.7 -1.7 NA NA NA Indicator of corrosiveness of water.
Aggressive Index Non-Corrosive 2016 10 10 NA NA NA Indicator of corrosiveness in water.
Zinc (ppm)(TT) 5 2017 0.39 0.29-0.56 2014 NA NA Water additive used to control corrosion.
Orthophosphate (ppm) (TT) ~ 2017 1.11 0.92-1.41 NA NA NA Water additive used to control corrosion.

 

* The Langelier Saturation and Aggressive Indices and Specific Conductance are tests to measure the corrosivity of water. The results indicate that PID water is mildly corrosive. Zinc orthophosphate (ZOP) is added at the treatment plant to reduce the corrosiveness of the water on metallic pipes.

 

UNREGULATED AND OTHER SUBSTANCES

Surface Water Supply Groundwater Supply  

CHEMICAL
(UNIT OF MEASURE)

YEAR SAMPLED

AVERAGE DETECTED

RANGE
LOW-HIGH

YEAR SAMPLED

AVERAGE DETECTED

RANGE
LOW-HIGH

MAJOR SOURCE IN DRINKING WATER

Alkalinity as CaC03 (ppm) 2017 26 19-36 2014 81 81 Natural occurring substance.
Bicarbonate Alkalinity (ppm) 2017 29 29 2014 99 99 Natural occurring substance.
Calcium (ppm) 2017 4.5 4.5 2014 15 15 Natural occurring substance.
Magnesium (ppm) 2017 3.3 3.3 2014 9.3 9.3 Natural occurring substance.
Sodium (ppm) 2011 1.7 1.7 2014 5.1 5.1 Natural occurring substance.
Chlorate (ppb) 2015 260 120-400 NA NA NA Sodium Hypochlorite used for disinfection.
pH 2018 7.2 7.1-7.3 2017 7.3 7.3 Slightly basic water.

 

 Flouride is not added to the District's drinking water; fluoride concentration in the raw water is non detectable.

This Consumer Confidence Report (CCR) reflects changes in drinking water regulatory requirements during 2018. All water systems are required to comply with the state Total Coliform Rule. Beginning April 1, 2016, all water systems are also required to comply with the federal Revised Total Coliform Rule. The new federal rule maintains the purpose to protect public health by ensuring the integrity of the drinking water distribution system and monitoring for the presence of microbials (e.g., total coliform and E. coli bacteria). The U.S. EPA anticipates greater public health protection as the new rule requires water systems that are vulnerable to microbial contamination to identify and fix problems. Water systems that exceed a specified frequency of total coliform occurrences are required to conduct an assessment to determine if any sanitary defects exist. If found, these must be corrected by the water system.

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