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This website publishes administrative rules on their effective dates, as designated by the adopting state agencies, colleges, and universities.

Rule 3745-1-32 | Ohio river standards.

 

[Comment: For dates of non-regulatory government publications, publications of recognized organizations and associations, federal rules and federal statutory provisions referenced in this rule, see rule 3745-1-03 of the Administrative Code.]

(A) The Ohio river is designated warmwater habitat, public water supply, agricultural water supply, industrial water supply and bathing waters, and will meet the most stringent criteria set forth in, or derived in accordance with, this rule, rules 3745-1-01 to 3745-1-07 and 3745-1-33 to 3745-1-40 of the Administrative Code.

Table 32-1. Water quality criteria for the Ohio river.

ChemicalForm1Units2IMZM3OMZM3OMZA3
Bacteria (E. coli)aTcfu/100 mL126126126
Bacteria (E. coli)bTcfu/100 mL410410410
Bacteria (fecal coliform)cTcfu/ 100 mL2,0002,0002,000
Cyanidefreeµg/l44225.2
Dissolved oxygen4Tmg/l--4.0d5.0
RadionuclidesT--ee
Temperature--°F--Table 32-3Table 32-3

1T = total.

2mg/l = milligrams per liter (parts per million); µg/l = micrograms per liter (parts per billion); °F = degrees Fahrenheit; cfu/100 mL = colony forming units per one hundred milliliters.

3IMZM = inside mixing zone maximum; OMZM = outside mixing zone maximum; OMZA = outside mixing zone average.

4For dissolved oxygen, OMZM means outside mixing zone minimum at any time and OMZA means outside mixing zone minimum daily average.

aCriterion applies for contact recreation during the months of May through October and is expressed as a ninety-day geometric mean.

b Criterion applies for contact recreation during the months of May through October and is not to be exceeded in more than ten per cent of samples taken during any ninety-day period.

c Criterion applies at all times and is expressed as a monthly geometric mean based on not less than five samples per month. For the months of May through October, measurements of E. coli bacteria may be substituted for fecal coliform.

dA minimum of 5.0 mg/l at any time shall be maintained during the April fifteen to June fifteen spawning season.

eGross total alpha particle activity (including radium-226, but excluding radon and uranium) shall not exceed fifteen picocuries per liter (pci/l) and combined radium-226 and radium-228 shall not exceed four pci/l. The concentration of total gross beta particle activity shall not exceed fifty pci/l. The concentration of total strontium-90 shall not exceed eight pci/l.

Table 32-2. Ohio river water quality criteria for the protection of human health.

OMZA3
ChemicalForm1Units2IntakesElsewhere
AcenaphtheneTµg/l7070
AcroleinTµg/l3.03.0
Acrylonitrile5Tµg/l0.510.51
AlachlorTµg/l2.0a--
Aldrin5Tµg/l7.7*10-67.7*10-6
AnthraceneTµg/l300300
AntimonyTRµg/l5.65.6
ArsenicTRµg/l10a50
AsbestosTMf/l7.0a--
AtrazineTµg/l3.0a--
BariumTRµg/l1,0001,000
Benzene5Tµg/l5.0a12
Benzidine5Tµg/l0.000860.00086
Benzo(a)anthracene5Tµg/l0.0120.012
Benzo(a)pyrene5Tµg/l0.00120.0012
Benzo(b)fluoranthene5Tµg/l0.0120.012
Benzo(k)fluoranthene5Tµg/l0.0380.038
BerylliumTRµg/l4.0a16
BromateTµg/l10a--
Bromoform (Tribromomethane)5Tµg/l4343
Butylbenzyl phthalate5Tµg/l1.01.0
CadmiumTRµg/l5.0a--
CarbofuranTµg/l40a--
Carbon tetrachloride5Tµg/l2.32.3
ChloramineTµg/l4,000a--
Chlordane5Tµg/l0.00310.0031
ChloridesTmg/l250a250
ChlorineTµg/l4,000a--
Chlorine dioxideTµg/l800a--
ChloriteTµg/l1,000a--
Chloroacetic acid6Tµg/l60a--
ChlorobenzeneTµg/l100a100
Chlorodibromomethane5Tµg/l4.04.0
Bis(2-Chloro-1-methylethyl) etherTµg/l200200
Bis(2-Chloroethyl) ether5Tµg/l0.300.30
Chloroform5Tµg/l5757
bis(2-Chloroisopropyl) etherTµg/l1,4001,400
bis(2-Chloromethyl) ether5Tµg/l0.00150.0015
2-ChloronaphthaleneTµg/l800800
2-ChlorophenolTµg/l3030
ChromiumTRµg/l100a--
Chrysene5Tµg/l0.0380.038
Cyanidefreeµg/l4.04.0
2,4-D (2,4-Dichlorophenoxy-acetic acid)Tµg/l70a1,300
DalaponTµg/l200a--
4,4'-DDD5Tµg/l0.00120.0012
4,4'-DDE5Tµg/l0.000180.00018
4,4'-DDT5Tµg/l0.00030.0003
Dibenzo (a,h) anthracene5Tµg/l0.00120.0012
DibromochloropropaneTµg/l0.2a--
Di-n-butyl phthalateTµg/l2020
Dichloroacetic acid6Tµg/l60a--
1,2-DichlorobenzeneTµg/l420420
1,3-DichlorobenzeneTµg/l7.07.0
1,4-DichlorobenzeneTµg/l6363
3,3'-Dichlorobenzidine5Tµg/l0.210.21
Dichlorobromomethane5Tµg/l5.55.5
1,2-Dichloroethane5Tµg/l3.83.8
1,1-Dichloroethylene5Tµg/l7.0a300
cis-1,2-DichloroethyleneTµg/l70a--
trans-1,2-DichloroethyleneTµg/l100a100
2,4-DichlorophenolTµg/l1010
1,2-Dichloropropane5Tµg/l5.0a5.0
1,3-Dichloropropene5Tµg/l2.72.7
Dieldrin5Tµg/l1.2*10-51.2*10-5
Di (2-ethylhexyl) adipateTµg/l400a--
Diethyl phthalateTµg/l600600
2,4-DimethylphenolTµg/l100100
Dimethyl phthalateTµg/l2,0002,000
4,6-Dinitro-o-cresol (4,6- Dinitro-2-methylphenol)Tµg/l2.02.0
Dinitrophenols4Tµg/l1010
2,4-Dinitrotoluene5Tµg/l0.490.49
2,4-DinitrophenolTµg/l1010
DinosebTµg/l7.0a--
1,2-DiphenylhydrazineTµg/l0.300.30
DiquatTµg/l20a--
Dissolved solidsTmg/l750/500a,b--
alpha-Endosulfan7Tµg/l2020
beta-Endosulfan7Tµg/l2020
Endosulfan sulfate7Tµg/l2020
EndothallTµg/l100a--
Endrin8Tµg/l0.030.03
Endrin aldehyde8Tµg/l0.290.29
EthylbenzeneTµg/l6868
Ethylene dibromide (EDB)Tµg/l0.050a--
bis (2-Ethylhexyl) phthalate5Tµg/l3.23.2
FluorantheneTµg/l2020
FluoreneTµg/l5050
FluorideTµg/l1,0001,000
GlyphosateTµg/l700a--
Heptachlor5Tµg/l5.9*10-55.9*10-5
Heptachlor epoxide5Tµg/l0.000320.00032
Hexachlorobenzene5Tµg/l0.000790.00079
Hexachlorobutadiene5Tµg/l0.10.1
alpha-Hexachlorocyclohexane5Tµg/l0.00360.0036
beta-Hexachlorocyclohexane5Tµg/l0.080.08
gamma-Hexachlorocyclohexane (Lindane)Tµg/l0.20a0.98
Hexachlorocyclohexane - technical grade5Tµg/l0.0660.066
HexachlorocyclopentadieneTµg/l4.04.0
Hexachloroethane5Tµg/l1.01.0
Indeno (1,2,3-c,d) pyrene5Tµg/l0.0120.012
IronSµg/l300a--
Isophorone5Tµg/l340340
MercuryTRµg/l0.0120.012
MethoxychlorTµg/l0.020.02
Methyl bromideTµg/l4747
3-Methyl-4-chlorophenolTµg/l500500
Methylene chloride5Tµg/l5.0a46
NickelTRµg/l610610
Nitrate-N + Nitrite-NTµg/l10,000a10,000
Nitrite-NTµg/l1,000a1,000
NitrobenzeneTµg/l1010
Nitrosoamines5Tµg/l0.00800.0080
N-Nitrosodibutylamine5Tµg/l0.0630.063
N-Nitrosodiethylamine5Tµg/l0.00800.0080
N-Nitrosodimethylamine5Tµg/l0.00690.0069
N-Nitrosodi-n-propylamine5Tµg/l0.0500.050
N-Nitrosodiphenylamine5Tµg/l3333
N-Nitrosodipyrrolidine5Tµg/l0.160.16
Oxamyl (Vydate)Tµg/l200a--
PentachlorobenzeneTµg/l0.10.1
Pentachlorophenol5Tµg/l0.30.3
PhenolTµg/l4,0004,000
PhenolicsTµg/l5.0--
PicloramTµg/l500a--
Polychlorinated biphenyls5Tµg/l0.000640.00064
PyreneTµg/l2020
SeleniumTRµg/l50a170
SilverTµg/l5050
Silvex (2, 4, 5-TP, 2- [2, 4, 5-Trichlorophenoxy] propionic acidTµg/l50a100
SimazineTµg/l4.0a--
StyreneTµg/l100a--
SulfatesTmg/l250a--
1, 2, 4, 5-TetrachlorobenzeneTµg/l0.030.03
2, 3, 7, 8-Tetrachlorodibenzo-p-dioxin5Tµg/l5.0*10-85.0*10-8
1, 1, 2, 2-Tetrachloroethane5Tµg/l1.71.7
Tetrachloroethylene5Tµg/l5.0a6.9
ThalliumTRµg/l1.71.7
TolueneTµg/l5757
Toxaphene5Tµg/l0.00280.0028
Trichloroacetic acid6Tµg/l60a--
1, 2, 4-Trichlorobenzene5Tµg/l0.710.71
1, 1, 1-TrichloroethaneTµg/l200a10,000
1, 1, 2-Trichloroethane5Tµg/l5.0a5.5
Trichloroethylene5Tµg/l5.0a6.0
2, 4, 5-TrichlorophenolTµg/l300300
2, 4, 6-Trichlorophenol5Tµg/l1414
Vinyl chloride5Tµg/l0.220.22
XylenesTµg/l10,000a--
ZincTµg/l7,4007,400
1 S = soluble; T = total; TR = total recoverable.
2 mg/l = milligrams per liter (parts per million); µg/l = micrograms per liter (parts per billion); Mf/l = million fibers per liter.
3 OMZA = outside mixing zone average. Criteria in the "Intakes" column apply within five hundred yards of drinking water intakes. Criteria in the "Elsewhere" column apply at all other locations.
4The criteria for this chemical apply to the sum of all dinitrophenols.
5Criteria for this chemical are based on a carcinogenic endpoint.
6The criterion for this chemical applies to the sum of chloroacetic acid, dichloroacetic acid and trichloroacetic acid.
7The criteria for this chemical apply to the sum of alpha-endosulfan, beta-endosulfan and endolsufan sulfate.
8The criteria for this chemical apply to the sum of endrin and endrin aldehyde.
aThis criterion is the maximum contaminant level (MCL) developed under the "Safe Drinking Water Act".
bEquivalent 25°C specific conductance values are 1200 micromhos/cm as a maximum and 800 micromhos/cm as a thirty-day average.
PA state line to Greenup Lock and Dam (RM 341.1)PA state line to Greenup Lock and Dam (RM 341.1)Greenup Lock and Dam (RM 341.1) to IN state lineGreenup Lock and Dam (RM 341.1) to IN state line
Month/datePeriod Average (ºF)Instantaneous Maximum (ºF)Period Average (ºF)Instantaneous Maximum (ºF)
January 1 - 3145.747.046.847.2
February 1 - 2943.946.347.952.8
March 1 - 3151.256.457.462.4
April 1 -3061.266.366.971.1
May 1 -3171.276.576.481.4
June 1 - 1478.881.083.585.7
June 15 - 3087.087.087.087.0
July 1 -3189.089.089.089.0
August 1- 3189.089.089.089.0
September 1 - 1587.087.087.087.0
September 16 - 3081.083.184.787.0
October 1 - 3174.178.376.781.6
November 1 - 3065.069.066.270.8
December 1 -3155.860.055.660.4

Supplemental Information

Authorized By: 6111.041
Amplifies: 6111.041
Five Year Review Date: 1/18/2026
Prior Effective Dates: 4/4/1985, 8/19/1985, 5/1/1990, 10/31/1997, 12/30/2002, 2/6/2017