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