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Tap water quality report

Allison Water Supply

EPA monitoring tested this supplier for 59 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

59
contaminants tested
14
detected
966
people served
0
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
Ground water
Ownership
Local government
Counties served
Butler

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
MON Monitoring Resolved 2017-06-01 → 2017-06-30
MON Monitoring Resolved 2017-06-01 → 2017-06-30
MON Monitoring Resolved 2017-06-01 → 2017-06-30
MON Monitoring Resolved 2017-06-01 → 2017-06-30
MR Monitoring Resolved 2001-12-01 → 2001-12-31
MR Monitoring Resolved 2001-12-01 → 2001-12-31
MR Monitoring Resolved 2001-12-01 → 2001-12-31
MR Monitoring Resolved 2001-12-01 → 2001-12-31
MR Monitoring Resolved 2001-12-01 → 2001-12-31
MR Monitoring Resolved 2001-12-01 → 2001-12-31

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Fluoride
1100 µg/L 28%
of the EPA limit 4000 µg/L
worst single sample: 1240 µg/L
79/85 SYR4 2012–2019
Copper
126 µg/L 9.7%
of the EPA limit 1300 µg/L
worst single sample: 265 µg/L
30/30 SYR4 2012–2018
Lead
15.58 µg/L 104%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 17.5 µg/L
17/30 SYR4 2012–2018
Lead
0.0076 mg/L 51%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2024
Trichloroacetic Acid
5.023 µg/L
No EPA limit set
worst single sample: 5.65 µg/L
7/7 SYR4 2013–2019
Chloroform
20.925 µg/L
No EPA limit set
worst single sample: 22 µg/L
6/7 SYR4 2013–2019
Bromodichloromethane
3.256 µg/L
No EPA limit set
worst single sample: 3.32 µg/L
5/7 SYR4 2013–2019
TTHM
25.16 µg/L 31%
of the EPA limit 80 µg/L
worst single sample: 26.1 µg/L
5/7 SYR4 2013–2019
Dibromochloromethane
2.5245 µg/L
No EPA limit set
worst single sample: 2.82 µg/L
4/7 SYR4 2013–2019
Dichloroacetic Acid
7.695 µg/L
No EPA limit set
worst single sample: 7.89 µg/L
4/7 SYR4 2013–2019
Monochloroacetic Acid
6.7325 µg/L
No EPA limit set
worst single sample: 6.92 µg/L
4/7 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
19.165 µg/L 32%
of the EPA limit 60 µg/L
worst single sample: 20.5 µg/L
4/7 SYR4 2013–2019
Nitrate
4000 µg/L 40%
of the EPA limit 10000 µg/L
 2/16 SYR4 2012–2019
Barium
246 µg/L 12%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
45 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBenzeneBenzo(A)PyreneBromoformChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylbenzeneGlyphosateLassoMercuryMonobromoacetic AcidPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ALLISON WATER SUPPLY
Email
[email protected]

Frequently asked questions about Allison Water Supply

Is Allison Water Supply tap water safe to drink?

EPA monitoring detected 14 contaminants in Allison 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 Allison Water Supply's water?

EPA monitoring detected Fluoride, Copper, Lead, Lead, Trichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Allison Water Supply serve?

Allison Water Supply reports serving 966 people in Iowa, per its EPA record.

Has Allison Water Supply had any water quality violations?

The EPA has 16 violations on file for Allison Water Supply, 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.