Wastewater
City of Fairfield
Fairfield, OH 45014
(513) 858-7760 | E-mail

If you are experiencing a Sewer Emergency or have water backing up in your basement contact the Wastewater Treatment Facility at (513) 858-7760

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Wastewater Characteristics 2011

Wastewater Treatment Plant NPDES Discharge Limitations

Parameter	Daily Min.	Daily Max.	Weekly Avg. Max.	Monthly Avg. Max.
Dissolved Oxygen (mg/l)	5.4
Oil and Grease (mg/l		10
pH (S.U.)	6.5	9
TSS (mg/l)			34.2	22.8
CBOD (5-day mg/l)			28.5	19
NH3 Summer (mg/l)			2.4	1.6
NH3 Winter (mg/l)			15.3	10.2
Fecal Coliform (#/100 ml)			2000	1000

Wastewater Treatment Plant Design Data

Parameter	Design mg/l	Design lbs./day	Annual Daily Avg. mg/l	Annual Daily Avg. lbs./day	Lbs. % of Design
TSS	200	16,680	160	8,674	52
CBOD	220	18,384	159	8,619	47

Influent 2011 (Daily Avg.)

Month	Flow (MGD)	TSS (mg/l)	TSS (lbs/day)	CBOD (mg/l)	CBOD (lbs/day)	NH3 (mg/l)	NH3 (lbs/day)
Jan	4.626	183	7168	203	7799	19.1	769
Feb	6.861	153	7731	156	7625	16.0	743
Mar	7.333	136	7117	132	7444	13.7	659
Apr	10.764	105	6789	93	5805	10.0	590
May	8.392	131	7295	118	6409	10.9	606
Jun	5.207	179	7657	175	7246	17.7	725
Jul	4.498	187	7061	192	7238	18.0	702
Aug	3.958	216	7352	228	7730	22.6	746
Sep	4.976	190	7389	189	7358	17.4	693
Oct	5.418	183	7694	181	7522	15.6	651
Nov	7.690	135	6715	130	6336	11.1	537
Dec	8.607	123	6298	107	5438	10.8	512

Effluent 2011 (Daily Avg.)

Month	Flow (MGD)	TSS (mg/l)	TSS (lbs/day)	CBOD (mg/l)	CBOD (lbs/day)	NH3 (mg/l)	NH3 (lbs/day)	Fecal Coliform (#/100ml)
Jan	4.626	6	231	5	193	1.57	61
Feb	6.861	10	572	8	458	5.21	298
Mar	7.333	3	183	4	245	8.19	501
Apr	10.764	6	539	5	449	0.94	84
May	8.392	3	210	2	140	0.06	4	20
Jun	5.207	3	130	2	87	0.01	0.4	41
Jul	4.498	5	175	3	113	0.16	6	148
Aug	3.958	4	132	3	99	0.61	20	140
Sep	4.976	5	207	3	124	0.33	14	101
Oct	5.418	4	181	3	136	0.09	4	34
Nov	7.690	6	384	5	321	2.42	155
Dec	8.607	6	431	6	431	3.93	282

Effluent Metals 2011 (Daily Avg.)

Month	CN (mg/l)	Cd (ug/l)	Cr-T (ug/l)	Cr-D (ug/l)	Cu (ug/l	Pb (ug/l)	P (mg/l)	Zn (ug/l)	Hg (ng/l)	O&G (mg/l)
Jan	AA	AA	AA	AA	5.87	AA	3.30	32	2.3	AA
Feb	AA	AA	AA	AA	AA	AA	2.05	31.5	4.7	AA
Mar	AA	AA	AA	AA	4.18	AA	0.45	16.1	1.5	AA
Apr	AA	AA	AA	AA	7.62	0.53	2.90	41.7	1.7	AA
May	AA	AA	AA	AA	3.85	AA	0.87	17	2.5	AA
June	AA	AA	AA	AA	6.52	AA	3.48	34.5	1.0	AA
July	AA	AA	AA	AA	7.72	AA	3.04	39.8	7.3	AA
Aug	0.03	AA	AA	AA	9.17	AA	3.82	42.7	1.7	AA
Sep	AA	AA	AA	AA	9.47	AA	2.54	41.8	4.1	AA
Oct	AA	AA	AA	AA	10.2	AA	2.47	41.6	5.2	AA
Nov	AA	AA	AA	AA	7.02	AA	1.81	30.3	6.2	AA
Dec	0.01	AA	AA	AA	4.61	AA	0.53	11.2	1.8	AA

AA = Below Detection Limit