Is Rural Water System #1 Tap Water Safe? Quality Report

Water source: Ground water under surface influence
Ownership: Private
Counties served: Sioux

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2017-07-01 → 2017-07-31
TT	Health-based	Resolved	2017-07-01 → 2017-07-31
TT	Health-based	Resolved	2017-07-01 → 2017-07-31
MCL	Health-based	Resolved	2003-05-01 → 2003-05-31
MCL	Health-based	Resolved	2003-05-01 → 2003-05-31
MCL	Health-based	Resolved	2003-05-01 → 2003-05-31
MCL	Health-based	Resolved	2003-05-01 → 2003-05-31
MCL	Health-based	Resolved	2003-05-01 → 2003-05-31
MCL	Health-based	Resolved	2003-05-01 → 2003-05-31
MCL	Health-based	Resolved	2003-05-01 → 2003-05-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	6510 µg/L 65% of the EPA limit 10000 µg/L	226/226	SYR4	2012–2019
Copper	1400 µg/L 108% of the EPA limit, in the worst sample — 1300 µg/L	30/30	SYR4	2013–2019
Lead	0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L	18/18	LCR	2023
Bromodichloromethane	20 µg/L No EPA limit set	13/13	SYR4	2012–2019
Chloroform	27 µg/L No EPA limit set	13/13	SYR4	2012–2019
Dibromochloromethane	20 µg/L No EPA limit set	13/13	SYR4	2012–2019
Dichloroacetic Acid	9 µg/L No EPA limit set	13/13	SYR4	2012–2019
TTHM	55 µg/L 69% of the EPA limit 80 µg/L	13/13	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	19 µg/L 32% of the EPA limit 60 µg/L	13/13	SYR4	2012–2019
Trichloroacetic Acid	10 µg/L No EPA limit set	13/13	SYR4	2012–2019
Dibromoacetic Acid	6 µg/L No EPA limit set	9/13	SYR4	2012–2019
Bromoform	5.8 µg/L No EPA limit set	8/13	SYR4	2012–2019
Lithium	82 µg/L No EPA limit set	7/7	UCMR-5	2025
Lead	4 µg/L 27% of the EPA limit 15 µg/L	5/30	SYR4	2013–2019
Combined Uranium	33.2 µg/L 111% of the EPA limit, in the worst sample — 30 µg/L	3/3	SYR4	2015–2018
Fluoride	1300 µg/L 33% of the EPA limit 4000 µg/L	3/3	SYR4	2012–2019
Xylenes, Total	5.1 µg/L 0.1% of the EPA limit 10000 µg/L	3/9	SYR4	2012–2019
Combined Radium (-226 And -228)	2 pCi/L 40% of the EPA limit 5 pCi/L	2/3	SYR4	2012–2015
Arsenic	1 µg/L 10% of the EPA limit 10 µg/L	1/5	SYR4	2012–2019
Barium	70 µg/L 3.5% of the EPA limit 2000 µg/L	1/3	SYR4	2012–2019
Di(2-ethylhexyl) Phthalate	1.1 µg/L 18% of the EPA limit 6 µg/L	1/9	SYR4	2012–2019
Ethylbenzene	0.9000 µg/L 0.1% of the EPA limit 700 µg/L	1/7	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	7.1 pCi/L 47% of the EPA limit 15 pCi/L	1/1	SYR4	2015

72 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatGlyphosateHfpo-DaLassoMercuryMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: RURAL WATER SYSTEM #1
Phone: 712-752-8318
Email: randyi@rws1.com

Frequently asked questions about Rural Water System #1

Is Rural Water System #1 tap water safe to drink?

EPA monitoring detected 23 contaminants in Rural Water System #1'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 Rural Water System #1's water?

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

How many people does Rural Water System #1 serve?

Rural Water System #1 reports serving 3,428 people in Iowa, per its EPA record.

Has Rural Water System #1 had any water quality violations?

The EPA has 56 violations on file for Rural Water System #1, of which 16 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.