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Tap water quality report

W Central Rwa - Denison Subsys

EPA monitoring tested this supplier for 14 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

14
contaminants tested
10
detected
2,428
people served
0
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
GWP
Ownership
Private
Counties served
Crawford

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.

0
health-based violations
16
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2013-08-01 → 2013-08-31
MR Monitoring Resolved 2013-08-01 → 2013-08-31
MR Monitoring Resolved 2013-08-01 → 2013-08-31
MR Monitoring Resolved 2013-08-01 → 2013-08-31
MR Monitoring Resolved 2013-08-01 → 2013-08-31
MR Monitoring Resolved 2013-08-01 → 2013-08-31
MR Monitoring Resolved 2013-08-01 → 2013-08-31
MR Monitoring Resolved 2013-08-01 → 2013-08-31
MR Monitoring Resolved 2013-08-01 → 2013-08-31
MR Monitoring Resolved 2013-08-01 → 2013-08-31

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
Bromodichloromethane
20 µg/L
No EPA limit set
 12/12 SYR4 2012–2018
Bromoform
6.5 µg/L
No EPA limit set
 12/12 SYR4 2012–2018
Chloroform
27 µg/L
No EPA limit set
 12/12 SYR4 2012–2018
Dibromoacetic Acid
6 µg/L
No EPA limit set
 12/12 SYR4 2012–2018
Dibromochloromethane
19 µg/L
No EPA limit set
 12/12 SYR4 2012–2018
Dichloroacetic Acid
7 µg/L
No EPA limit set
 12/12 SYR4 2012–2018
TTHM
72 µg/L 90%
of the EPA limit 80 µg/L
 12/12 SYR4 2012–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2025
Total Haloacetic Acids (HAA5)
15 µg/L 25%
of the EPA limit 60 µg/L
 7/12 SYR4 2012–2018
Trichloroacetic Acid
2 µg/L
No EPA limit set
 4/12 SYR4 2012–2018
4 contaminants tested, none detected
CopperLeadMonobromoacetic AcidMonochloroacetic Acid

Utility contact

Contact
WEST CENTRAL IOWA RURAL WATER ASSOC
Phone
712-655-2534
Email
info@wcirwa.com

Frequently asked questions about W Central Rwa - Denison Subsys

Is W Central Rwa - Denison Subsys tap water safe to drink?

EPA monitoring detected 10 contaminants in W Central Rwa - Denison Subsys'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 W Central Rwa - Denison Subsys's water?

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

How many people does W Central Rwa - Denison Subsys serve?

W Central Rwa - Denison Subsys reports serving 2,428 people in Iowa, per its EPA record.

Has W Central Rwa - Denison Subsys had any water quality violations?

The EPA has 16 violations on file for W Central Rwa - Denison Subsys, of which 0 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.