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Tap water quality report

Lonoke Waterworks

EPA monitoring tested this supplier for 107 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

107
contaminants tested
15
detected
4,277
people served
23
health-based violations
Arkansas rankingsLead in ArkansasPFAS in Arkansas
Water source
Ground water
Ownership
Local government
Counties served
Lonoke

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.

23
health-based violations
28
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2025-03-01
TT Health-based Resolved 2025-03-01
TT Health-based Resolved 2025-03-01
TT Health-based Resolved 2025-03-01
TT Health-based Resolved 2025-02-01
TT Health-based Resolved 2025-02-01
TT Health-based Resolved 2025-02-01
TT Health-based Resolved 2025-02-01
TT Health-based Resolved 2025-01-01
TT Health-based Resolved 2025-01-01

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
Fluoride
1650 µg/L 41%
of the EPA limit 4000 µg/L
 99/102 SYR4 2012–2019
Copper
600 µg/L 46%
of the EPA limit 1300 µg/L
 26/41 SYR4 2014–2017
Dibromochloromethane
8.3 µg/L
No EPA limit set
 24/24 SYR4 2012–2019
Bromodichloromethane
6.7 µg/L
No EPA limit set
 17/18 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Chloroform
3.4 µg/L
No EPA limit set
 13/18 SYR4 2012–2019
Bromoform
3.3 µg/L
No EPA limit set
 12/18 SYR4 2012–2019
Nitrate-Nitrite
340 µg/L 3.4%
of the EPA limit 10000 µg/L
 12/16 SYR4 2012–2019
TTHM
21.8 µg/L 27%
of the EPA limit 80 µg/L
 9/9 SYR4 2012–2019
Lead
8 µg/L 53%
of the EPA limit 15 µg/L
 5/43 SYR4 2014–2017
Total Haloacetic Acids (HAA5)
4.5 µg/L 7.5%
of the EPA limit 60 µg/L
 5/9 SYR4 2012–2019
Dichloroacetic Acid
2.5 µg/L
No EPA limit set
 4/9 SYR4 2012–2019
Dibromoacetic Acid
2.5 µg/L
No EPA limit set
 3/9 SYR4 2012–2019
Barium
230 µg/L 12%
of the EPA limit 2000 µg/L
 1/2 SYR4 2014–2017
Trichloroacetic Acid
2 µg/L
No EPA limit set
 1/9 SYR4 2012–2019
92 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CUMMINGS, DARREN
Phone
501-676-2422

Frequently asked questions about Lonoke Waterworks

Is Lonoke Waterworks tap water safe to drink?

EPA monitoring detected 15 contaminants in Lonoke Waterworks'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 Lonoke Waterworks's water?

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

How many people does Lonoke Waterworks serve?

Lonoke Waterworks reports serving 4,277 people in Arkansas, per its EPA record.

Has Lonoke Waterworks had any water quality violations?

The EPA has 28 violations on file for Lonoke Waterworks, of which 23 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.