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ROCK VALLEY WATER SUPPLY

Iowa — Community Water System — PWSID: IA8482096

System Information

PWSIDIA8482096
System NameROCK VALLEY WATER SUPPLY
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region07
Serves SchoolNo
WholesalerNo
First ReportedFeb 27, 1979
Last ReportedDec 19, 2025

Location & Contact

StateIowa
CityROCK VALLEY
ZIP Code51247
AddressATTN SHANE VAN BEMMEL OPERATOR
OrganizationROCK VALLEY WATER SUPPLY
Phone712-470-1936

Population & Service

Population Served4,059
Service Connections1,520

Drinking Water Violations (94)

This water system has 94 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Aug 1, 2024 Aug 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2024 Aug 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2004 Sep 30, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2004 Total Coliform Rule
Sep 1, 2004 Sep 30, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2004 Total Coliform Rule
Sep 1, 2004 Sep 30, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2004 Total Coliform Rule
Sep 1, 2004 Sep 30, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2004 Total Coliform Rule
Aug 1, 2002 Aug 31, 2002 Nitrate MCL Yes No 10.6 10 mg/L — Resolved Aug 31, 2002 Nitrate Rule
Aug 1, 2002 Aug 31, 2002 Nitrate MCL Yes No 10.6 10 mg/L — Resolved Aug 31, 2002 Nitrate Rule
Aug 1, 2002 Aug 31, 2002 Nitrate MCL Yes No 10.6 10 mg/L — Resolved Aug 31, 2002 Nitrate Rule
Aug 1, 2002 Aug 31, 2002 Nitrate MCL Yes No 10.6 10 mg/L — Resolved Aug 31, 2002 Nitrate Rule
Aug 1, 2000 Aug 31, 2000 Nitrate MCL Yes No 11.3 10 mg/L — Resolved Aug 31, 2000 Nitrate Rule
Aug 1, 2000 Aug 31, 2000 Nitrate MCL Yes No 11.3 10 mg/L — Resolved Aug 31, 2000 Nitrate Rule
Aug 1, 2000 Aug 31, 2000 Nitrate MCL Yes No 11.3 10 mg/L — Resolved Aug 31, 2000 Nitrate Rule
Aug 1, 2000 Aug 31, 2000 Nitrate MCL Yes No 11.3 10 mg/L — Resolved Aug 31, 2000 Nitrate Rule
Aug 1, 2000 Aug 31, 2000 Nitrate MCL Yes No 11.3 10 mg/L — Resolved Aug 31, 2000 Nitrate Rule
Aug 1, 2000 Aug 31, 2000 Nitrate MCL Yes No 11.3 10 mg/L — Resolved Aug 31, 2000 Nitrate Rule
Aug 1, 2000 Aug 31, 2000 Nitrate MCL Yes No 11.3 10 mg/L — Resolved Aug 31, 2000 Nitrate Rule
Aug 1, 2000 Aug 31, 2000 Nitrate MCL Yes No 11.3 10 mg/L — Resolved Aug 31, 2000 Nitrate Rule
Aug 1, 2000 Aug 31, 2000 Nitrate MCL Yes No 11.3 10 mg/L — Resolved Aug 31, 2000 Nitrate Rule
Aug 1, 2000 Aug 31, 2000 Nitrate MCL Yes No 11.3 10 mg/L — Resolved Aug 31, 2000 Nitrate Rule
May 1, 2000 May 31, 2000 Nitrate MCL Yes No 10.8 10 mg/L — Resolved May 31, 2000 Nitrate Rule
May 1, 2000 May 31, 2000 Nitrate MCL Yes No 10.8 10 mg/L — Resolved May 31, 2000 Nitrate Rule
May 1, 2000 May 31, 2000 Nitrate MCL Yes No 10.8 10 mg/L — Resolved May 31, 2000 Nitrate Rule
May 1, 2000 May 31, 2000 Nitrate MCL Yes No 10.8 10 mg/L — Resolved May 31, 2000 Nitrate Rule
May 1, 2000 May 31, 2000 Nitrate MCL Yes No 10.8 10 mg/L — Resolved May 31, 2000 Nitrate Rule
May 1, 2000 May 31, 2000 Nitrate MCL Yes No 10.8 10 mg/L — Resolved May 31, 2000 Nitrate Rule
May 1, 2000 May 31, 2000 Nitrate MCL Yes No 10.8 10 mg/L — Resolved May 31, 2000 Nitrate Rule
May 1, 2000 May 31, 2000 Nitrate MCL Yes No 10.8 10 mg/L — Resolved May 31, 2000 Nitrate Rule
May 1, 2000 May 31, 2000 Nitrate MCL Yes No 10.8 10 mg/L — Resolved May 31, 2000 Nitrate Rule
May 1, 2000 May 31, 2000 Nitrate MCL Yes No 10.8 10 mg/L — Resolved May 31, 2000 Nitrate Rule
Dec 1, 1999 Dec 31, 1999 Nitrate MCL Yes No 11.2 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Dec 1, 1999 Dec 31, 1999 Nitrate MCL Yes No 11.2 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Dec 1, 1999 Dec 31, 1999 Nitrate MCL Yes No 11.2 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Dec 1, 1999 Dec 31, 1999 Nitrate MCL Yes No 11.2 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Dec 1, 1999 Dec 31, 1999 Nitrate MCL Yes No 11.2 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Dec 1, 1999 Dec 31, 1999 Nitrate MCL Yes No 11.2 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Dec 1, 1999 Dec 31, 1999 Nitrate MCL Yes No 11.2 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Dec 1, 1999 Dec 31, 1999 Nitrate MCL Yes No 11.2 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Jun 1, 1999 Jun 30, 1999 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 1999 Nitrate Rule
Jun 1, 1999 Jun 30, 1999 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 1999 Nitrate Rule
Jun 1, 1999 Jun 30, 1999 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 1999 Nitrate Rule
Jun 1, 1999 Jun 30, 1999 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 1999 Nitrate Rule
Jun 1, 1999 Jun 30, 1999 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 1999 Nitrate Rule
Jun 1, 1999 Jun 30, 1999 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 1999 Nitrate Rule

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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