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Tap water quality report

Portsmouth Water Supply

EPA monitoring tested this supplier for 44 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
10
detected
189
people served
7
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
SWP
Ownership
Local government
Counties served
Shelby

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

7
health-based violations
23
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1993-07-01 → 1993-07-31
MCL Health-based Resolved 1993-07-01 → 1993-07-31
MCL Health-based Resolved 1993-07-01 → 1993-07-31
MCL Health-based Resolved 1993-07-01 → 1993-07-31
MCL Health-based Resolved 1993-07-01 → 1993-07-31
MCL Health-based Resolved 1993-07-01 → 1993-07-31
MCL Health-based Resolved 1993-07-01 → 1993-07-31
MR Monitoring Resolved 1993-03-01 → 1993-03-31
MR Monitoring Resolved 1993-03-01 → 1993-03-31
MR Monitoring Resolved 1993-03-01 → 1993-03-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2024
Bromodichloromethane
9.9 µg/L
No EPA limit set
 2/2 SYR4 2014–2017
Bromoform
2.1 µg/L
No EPA limit set
 2/2 SYR4 2014–2017
Chloroform
15 µg/L
No EPA limit set
 2/2 SYR4 2014–2017
Dibromochloromethane
8.2 µg/L
No EPA limit set
 2/2 SYR4 2014–2017
Dichloroacetic Acid
3 µg/L
No EPA limit set
 2/2 SYR4 2014–2017
TTHM
35 µg/L 44%
of the EPA limit 80 µg/L
 2/2 SYR4 2014–2017
Trichloroacetic Acid
2 µg/L
No EPA limit set
 2/2 SYR4 2014–2017
Lithium
13 µg/L
No EPA limit set
 2/2 UCMR-5 2024
Dibromoacetic Acid
1 µg/L
No EPA limit set
 1/2 SYR4 2014–2017
34 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaCopperHfpo-DaLeadMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaTotal Haloacetic Acids (HAA5)

Utility contact

Contact
PORTSMOUTH WATER SUPPLY
Phone
712-592-0329
Email
kjpauley@fmctc.com

Frequently asked questions about Portsmouth Water Supply

Is Portsmouth Water Supply tap water safe to drink?

EPA monitoring detected 10 contaminants in Portsmouth Water Supply's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Portsmouth Water Supply's water?

EPA monitoring detected Lead, Bromodichloromethane, Bromoform, Chloroform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Portsmouth Water Supply serve?

Portsmouth Water Supply reports serving 189 people in Iowa, per its EPA record.

Has Portsmouth Water Supply had any water quality violations?

The EPA has 23 violations on file for Portsmouth Water Supply, of which 7 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.