Piqua Ohio Water Quality Table

Water Quality Data Table

Definitions: MCLG: Maximum Contaminant Level Goal, or 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. - MCL: Maximum Contaminant Level, or the highest level of contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology. - AL: Action Level, or the concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow. - TT: Treatment Technique, or a required process intended to reduce the level of a contaminant in drinking water.
-"<": a symbol which means less than. A result of <5 means that the lowest level that could be detected was 5, and the contaminant in that sample was not detected. - NA: Not Applicable or no standard set.

Abbreviations: ppm: Parts per Million or Milligrams per Liter (mg/L) are units of measure for concentration of a contaminant. A part per million corresponds to one second in a little over 11.5 days. - ppb: Parts per Billion or Micrograms per Liter (µg/L) are units of measure for concentration of a contaminant. A part per billion corresponds to one second in 31.7 years.

Contaminants (Units)	MCLG	MCL	Level Found	Range of Detection	Violation	Sample Year	Typical Source of Contaminants
Microbiological Contaminants
Turbidity	NA	TT	0.245	0.040 – 0.245	NONE	2012	Soil runoff
Turbidity (% samples meeting Standards)	NA	TT	99.9%	99.9% - 100%	NONE	2012
Inorganic Contaminants
Fluoride (ppm)	4	4	1.01	0.82 – 1.14	NONE	2012	Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer & aluminum factories
Lead (ppb)	0	AL=15	<2.0	<2.0-12.0	NONE	2012	Corrosion of household plumbing systems
Lead (ppb)	Zero out of thirty samples was found to have lead in excess of the Action Level of 15 ppb. Results based on 90% Lead Level
Copper (ppm)	1.3	AL=1.3	0.046	<0.010 – 1.3	NONE	2012	Corrosion of household plumbing; Erosion of natural deposits; leaching from wood preservatives
Copper (ppm)	Zero out of thirty samples was found to have copper levels in excess of the Action Level of 1.3 ppm. Results based on 90% Copper Level
Barium (ppm)	2	2	0.043	NA	NONE	2012	Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits
Nitrate (ppm)	10	10	4.64	0.16 – 4.64	NONE	2012	Runoff from fertilizer use; Leaching from septic tanks, sewage; Erosion of natural deposits
Synthetic Organic Contaminants including Pesticides and Herbicides
Atrazine (ppb)	3	3	0.62	<0.07 –2.52	NONE	2012	Runoff from herbicide used on row crops
Simazine (ppb)	4	4	0.14	<0.05 –0.73	NONE	2012	Herbicide runoff
Volatile Organic Contaminants
TTHMs (Total trihalomethanes) (ppb)	NA	80	84.5	32.2 – 146.9	YES	2012	By-product of drinking water chlorination
HAA5’s (Haloacetic Acids) (ppb)	NA	60	31.0	16.2 – 49.8	NONE	2012	By-product of drinking water chlorination
Unregulated Contaminants
Bromodichloromethane (ppb)	NA	NA	10.3	5.4-23.4	NONE	2012	Component of Total Trihalomethane
Dibromochloromethane (ppb)	NA	NA	3.2	1.4-7.7	NONE	2012	Component of Total Trihalomethane
Bromoform	NA	NA	0.57	<0.5-0.89	NONE	2012	Component of Total Trihalomethane
Chloroform (ppb)	NA	NA	51.1	24-127.45	NONE	2012	Component of Total Trihalomethane
Dichloroacetic Acid (ppb)	NA	NA	20.5	12.8 – 30.8	NONE	2012	Component of Haloacetic Acids
Trichloroacetic Acid (ppb)	NA	NA	3.9	3.2 – 5.9	NONE	2012	Component of Haloacetic Acids
Monochloroacetic Acid (ppb)	NA	NA	2.1	<2.0 –2.9	NONE	2012	Component of Haloacetic Acids
Dibromoacetic Acid (ppb)	NA	NA	1.1	<1.0 – 1.8	NONE	2012	Component of Haloacetic Acids
Total Organic Carbon (ppb)	NA	NA	2.19	1.96 – 4.60	NONE	2012	Naturally occurring Organic material in water
Residual Disinfectants
Chlorine (ppm)	MRDL=4	MRDLG=4	1.19	0.91 –1.33	NONE	2012	Water additive used to control microbes

Turbidity is a measure of the cloudiness of the water and is an indication of the effectiveness of our filtration system. The turbidity limit set by the EPA is 0.3 NTU's in 95% of the daily samples and shall not exceed 1 NTU at any time. As reported above, the Piqua Municipal Water System's highest recorded turbidity result for 2012 was 0.440 NTU and the lowest monthly percentage of samples meeting the turbidity limit was 99.9%.

The value reported under "Level Found" for Total Organic Carbon (TOC) is the lowest ratio between percent of TOC actually removed to the percentage of TOC required to be removed. A value of greater than one (1) indicates that the water system is in compliance with TOC removal requirements. A value of less than one (1) indicates a violation of the TOC removal requirements.

Contaminants (Units)	MCLG	MCL	Level Found	Range of Detection	Violation	Sample Year	Typical Source of Contaminants
Combined Raw Water Sample (Composited Data)
Cryptosporidium (Oocysts/liter)	NA	NA	NA	0.00 – 0.03	No	2009	Human and animal activity; combined sewer overflows

The City of Piqua Water Department monitored for Cryptosporidium in the source water during 2009. Cryptosporidium was detected in 1 sample of 12 collected from the raw water. It was not detected in the finished water. Cryptosporidium is a microbial pathogen found in surface water throughout the U.S. Although filtration removes cryptosporidium, the most commonly used filtration methods cannot guarantee 100% removal. Monitoring of source water indicates the presence of these organisms. Currently test methods do not enable us to determine if the organisms are dead or if they are capable of causing disease. Symptoms of infection include nausea, diarrhea, and abdominal cramps. Most healthy individuals can overcome the disease. However, immuno-compromised people are at greater risk of developing life-threatening illness. We encourage immuno-compromised individuals to consult their doctor regarding appropriate precautions to take to avoid infection. Cryptosporidium must be ingested to cause disease, and it may be spread through means other than drinking water.

Please share this information with all the other people who drink this water, especially those who may not have received this notice directly (for example, people in apartments, nursing homes, schools, and businesses). You can do this by posting this notice in a public place or distributing copies by hand or mail.

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