Iowa Admin. Code agency 567, tit. II, div. B, ch. 42, app B

Current through Register Vol. 47, No. 11, December 11, 2024
Appendix B - MINIMUM SELF-MONITORING REQUIREMENTS (SMR)

I. Minimum Self-Monitoring Requirements for TNCs (excluding surface water or influenced groundwater PWSs) Notes:

* The self-monitoring requirements (SMRs) only apply to those supplies meeting the required operation records applicability criteria in 42.4(3) "a "(1).

* TNCs are exempt from the self-monitoring requirements for point-of-use treatment devices, unless the device is used to remove a contaminant which has a maximum contaminant level or treatment technique, in which case additional SMRs will be assigned by the department.

* Daily monitoring for TNCs applies only when the facility is in operation.

* Additional or more frequent monitoring requirements may be assigned by the department in the operation permit.

* Additional SMRs are required if treatment is used to remove a regulated contaminant. See Section II for the requirements under the specific treatment type.

General Requirements

All TNCs which meet the required operation records applicability criteria in 42.4(3)"a"(l) must measure the following parameters, where applicable. Additional SMRs are required if treatment is used to remove a contaminant which has a maximum contaminant level or treatment technique. See Section II for the requirements under the specific treatment type.

PWS Type:

TNC*

Parameter

Sample Site

Frequency

Pumpage (Flow)

raw:

final:

1/week

1/week

Disinfectant Residual***

final:

distribution system**:

1/day

1/day

Disinfectant, quantity used

day tank/scale:

1/day

Static Water and Pumping

Water Levels (Drawdown)

each active well:

1/month

*TNCs must measure and record the total water used each week, but daily measurements are recommended, and may be required by the department in specific PWSs.

"Monitoring is to be conducted at representative points in the distribution system which adequately demonstrate compliance with 42.4(3) "6 "(1).

***The department may reduce the required sample site locations for a system with a minimal distribution system and only hydropneumatic tank storage.

II. Minimum Self-Monitoring Requirements for CWS, NTNC, and IGW/SW TNC Notes:

* The self-monitoring requirements (SMR) only apply to those supplies meeting the required operation records applicability criteria in 42.4(3) "a "(1).

* NTNCs are exempt from the self-monitoring requirements for point-of-use treatment devices, unless the device is used to remove a contaminant which has a maximum contaminant level, treatment technique, action level, or health advisory, in which case additional SMRs will be assigned by the department.

* Daily monitoring for NTNCs applies only when the facility is in operation.

* These are the minimum self-monitoring requirements. Additional or more frequent monitoring requirements may be assigned by the department in the operation permit.

A. General Requirements

All PWSs which meet the required operation records applicability criteria in 42.4(3) "a "(1) must measure the following parameters, where applicable:

PWS Type:

NTNC* & IGW/SW TNC

CWS

Parameter

Sample Site

Frequency

Frequency

Pumpage (Flow)

raw:

1/week

1/day

bypass:

1/week

1/day

final:

1/week

1/day

Static Water and Pumping Water Levels (Drawdown)

each active well:

1/month

1/month

*NTNCs must measure and record the total water used each week, but daily measurements are recommended, and may be required by the department in specific PWSs.

B. Chemical Addition

All PWSs which apply chemicals in the treatment process must monitor the following parameters, for the applicable processes:

Pumpage or Flow:

<0.1 MOD

0.1-0.5 MOD

>0.5 MOD

Parameter

Sample Site

Frequency

Frequency

Frequency

DISINFECTION

Disinfectant Residual**

final:

distribution system*:

1/day

1/day

1/day

1/day

1/day

1/day

Disinfectant, quantity used

day tank/scale:

1/day

1/day

1/day

FLUORIDATION

Fluoride

raw:

final:

1/quarter

1/day

1/month

1/day

1/month

1/day

Fluoride, quantity used

day tank/scale:

1/day

1/day

1/day

pH ADJUSTMENT

pH

final:

1/week

2/week

1/day

Caustic Soda, quantity used

day tank/scale:

1/week

1/week

1/week

PHOSPHATE ADDITION

Phosphate, as PO4

final:

1/week

2/week

1/day

Phosphate, quantity used

day tank/scale:

1/week

1/week

1/week

OTHER CHEMICALS

Chemical

final:

1/week

2/week

1/day

Chemical, quantity used

day tank/scale:

1/week

1/week

1/week

* Monitoring is to be conducted at representative points in the distribution system which adequately demonstrate compliance with 42.4(3) "6 "(1).

** The department may reduce the required sample site locations for a system with a minimal distribution system, only hydropneumatic tank storage, and, if a CWS, it serves less than 100 persons.

C. Iron or Manganese Removal

Nonmunicipalities except rural water systems, benefited water districts, and publicly owned PWSs are exempt from monitoring of iron/manganese removal equipment unless the treatment is or was installed to remove a contaminant which has a maximum contaminant level, treatment technique, action level, or health advisory. Any chemicals which are applied during the treatment process must be measured under section "B. Chemical Addition" of this table.

Pumpage or Flow:

<0.1 MGD

0.1-0.5 MGD

>0.5 MGD

Parameter

Sample Site

Frequency

Frequency

Frequency

Iron

raw:

1/quarter

1/month

1/month

final:

1/week

2/week

1/day

Manganese

raw:

1/quarter

1/month

1/month

final:

1/week

2/week

1/day

D. pH Adjustment for Iron and Manganese Removal, by precipitation and coagulation processes utilizing lime, soda ash, or other chemical additions. Testing is only required if a specific chemical is added.

Pumpage or Flow:

<0.1 MGD

0.1-0.5 MGD

>0.5 MGD

Parameter

Sample Site

Frequency

Frequency

Frequency

Alkalinity

raw:

1/quarter

1/month

1/month

final:

1/week

2/week

1/day

Iron

raw:

1/quarter

1/month

1/month

final:

1/week

2/week

1/day

Manganese

raw:

1/quarter

1/month

1/month

final:

1/week

2/week

1/day

pH

raw:

1/week

1/week

1/week

final:

1/week

2/week

1/day

E. Cation Exchange (Zeolite) Softening

Nonmunicipalities except for rural water systems and benefited water districts are exempt from the monitoring of water quality parameters associated with ion-exchange softening unless the treatment is or was installed to remove a contaminant which has a maximum contaminant level, treatment technique, action level, or health advisory. An annual sodium sample of the final water is required of all community systems that use cation exchange softening, and will also meet the special sodium monitoring requirement of 567-paragraph 41.11(1)''f"

Pumpage or Flow:

<0.1 MGD

0.1-0.5 MGD

>0.5 MGD

Parameter

Sample Site

Frequency

Frequency

Frequency

Hardness as CaCO3

raw:

1/quarter

1/month

1/month

final:

1/week

2/week

1/day

pH

final:

1/week

2/week

1/day

Sodium*

final:

1/year

1/year

1/year

* The annual sodium sample required in 567-paragraph 41.11(1)'/" will satisfy this requirement.

F. Direct Filtration of Surface Waters or Influenced Groundwaters

Pumpage or Flow:

All

Parameter

Sample Site

Frequency

CT Ratio

final:

1/day

Disinfectant Residual*

source/entry point: distribution system*:

continuous daily

Disinfectant, quantity used

day tank/scale:

1/day

pH

final:

1/day

Temperature

raw:

1/day

Turbidity

raw:

final:

see 567-subrules 43.5(3) and 43.5(4), and 567-439. (455B) for the specific requirements

*Monitoring is to be conducted to demonstrate compliance with paragraph 42.4(3)"b"567-subrules 43.5(2) and 43.5(4), and 567-43.6(455B).

G. Clarification or Lime Softening of Surface Waters or Influenced Groundwaters

Pumpage or Flow:

All

Parameter

Sample Site

Frequency

Alkalinity

raw:

1/day

final:

1/day

Caustic Soda, quantity used

day tank/scale:

1/week

CT Ratio

final:

1/day

Disinfectant Residual*

source/entry point: distribution system*:

continuous daily

Disinfectant, quantity used

day tank/scale:

1/day

Hardness as CaCO3

raw:

1/day

final:

1/day

Odor

raw:

1/week

final:

1/day

pH

raw:

1/day

final:

1/day

Temperature

raw:

1/day

Turbidity

raw: final:

see 567-subrules 43.5(3) and 43.5(4), and 567-439. (455B) for the specific requirements

*Monitoring is to be conducted to demonstrate compliance with paragraph 42.4(3)"b "567-subrules 43.5(2) and 43.5(4), and 567-43.6(455B).

H. Lime Softening of Groundwaters (excluding IGW)

Pumpage or Flow

<0 1 MGD

>0 1 MGD

Parameter

Sample Site

Frequency

Frequency

Alkalinity

raw

1/quarter

1/month

final

1/day

1/day

Hardness as CaCO3

raw

1/quarter

1/month

final

1/day

1/day

pH

raw

1/week

1/week

final

1/day

1/day

Temperature

raw

1/week

1/week

I. Reverse Osmosis or Electrodialysis

Pumpage or Flow:

<0.1 MGD

>0.1 MGD

Parameter

Sample Site

Frequency

Frequency

Alkalinity

raw:

1/quarter

1/month

final:

1/day

1/day

Hardness as CaCO3

raw:

1/quarter

1/month

final:

1/day

1/day

Iron

raw:

1/day

1/day

Manganese

raw:

1/day

1/day

pH

raw:

1/week

1/week

final:

1/day

1/day

Total Dissolved Solids

raw:

1/month

1/month

J. Anion Exchange (i.e., Nitrate Reduction)

Pumpage or Flow:

<0.1 MGD

>0.1 MGD

Parameter

Sample Site

Frequency

Frequency

Nitrate

raw:

1/day

1/day

final:

1/day

1/day

Sulfate

raw:

1/week

1/week

final:

1/week

1/week

K. Activated Carbon for TTHM, VOC, or SOC Removal (GAC or PAC)

Pumpage or Flow:

<0.1 MGD

>0.1 MGD

Parameter

Sample Site

Frequency

Frequency

Total Organic Carbon (TOC)

final:

1/quarter

1/month

L. Air-Stripping for TTHM, VOC, or SOC Removal

Pumpage or Flow:

<0.1 MGD

>0.1 MGD

Parameter

Sample Site

Frequency

Frequency

Total Organic Carbon (TOC)

final:

1/quarter

1/month

M. Lead and Copper: Corrosion Control and Water Quality Parameters

The specific SMRs for corrosion control and water quality parameters are listed in 567-paragraph 41.4(1) "d" and 567-subrules 43.8(1) and 43.8(2).

N. Consecutive PWSs Supplied by a Surface Water or IGW PWS

Pumpage or Flow:

All

Parameter

Sample Site

Frequency

Disinfectant Residual

source/entry point: distribution system*:

1/day 1/day

Disinfectant, quantity used (if applicable)

day tank/scale:

1/day

Pumpage or Flow

master meter:

1/day

* Monitoring is to be conducted at representative points in the distribution system.

Iowa Admin. Code agency 567, tit. II, div. B, ch. 42, app B

Adopted by IAB April 11, 2018/Volume XL, Number 21, effective 5/16/2018