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Tap water quality report

Decker Water Works

EPA monitoring tested this supplier for 73 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
10
detected
273
people served
7
health-based violations
Indiana rankingsLead in IndianaPFAS in Indiana
Water source
Ground water
Ownership
Local government
Counties served
Knox

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
173
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2006-07-01 → 2006-07-31
MCL Health-based Resolved 2006-07-01 → 2006-07-31
MCL Health-based Resolved 2006-07-01 → 2006-07-31
MCL Health-based Resolved 2006-07-01 → 2006-07-31
MCL Health-based Resolved 1998-09-01 → 1998-09-30
MCL Health-based Resolved 1998-09-01 → 1998-09-30
MCL Health-based Resolved 1998-09-01 → 1998-09-30
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2023-01-01 → 2023-12-31

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
Nitrate
3050 µg/L 31%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2024
TTHM
24.6 µg/L 31%
of the EPA limit 80 µg/L
worst single sample: 29.7 µg/L
6/7 SYR4 2012–2018
Copper
122 µg/L 9.4%
of the EPA limit 1300 µg/L
worst single sample: 140 µg/L
5/5 SYR4 2018
Total Haloacetic Acids (HAA5)
2.9 µg/L 4.8%
of the EPA limit 60 µg/L
worst single sample: 3 µg/L
3/7 SYR4 2012–2018
Barium
39.5 µg/L 2%
of the EPA limit 2000 µg/L
worst single sample: 40 µg/L
2/2 SYR4 2014–2017
Fluoride
195 µg/L 4.9%
of the EPA limit 4000 µg/L
worst single sample: 200 µg/L
2/2 SYR4 2014–2017
Combined Uranium
1.9788 µg/L 6.6%
of the EPA limit 30 µg/L
 1/1 SYR4 2018
Mercury
0.2000 µg/L 10%
of the EPA limit 2 µg/L
 1/2 SYR4 2014–2017
Selenium
1 µg/L 2%
of the EPA limit 50 µg/L
 1/2 SYR4 2014–2017
63 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CULP, PENNY
Phone
812-890-6076
Email
[email protected]

Frequently asked questions about Decker Water Works

Is Decker Water Works tap water safe to drink?

EPA monitoring detected 10 contaminants in Decker Water Works'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 Decker Water Works's water?

EPA monitoring detected Nitrate, Lead, TTHM, Copper, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Decker Water Works serve?

Decker Water Works reports serving 273 people in Indiana, per its EPA record.

Has Decker Water Works had any water quality violations?

The EPA has 173 violations on file for Decker Water Works, of which 7 are health-based (a contaminant limit or required treatment was breached) and 1 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.