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NORTHWESTERN LANCASTER CO AUTH

Pennsylvania — Community Water System — PWSID: PA7360164

System Information

PWSIDPA7360164
System NameNORTHWESTERN LANCASTER CO AUTH
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region03
Serves SchoolNo
WholesalerNo
First ReportedMar 29, 1980
Last ReportedDec 17, 2025

Location & Contact

StatePennsylvania
CityMANHEIM
ZIP Code17545
Address97 N PENRYN RD
OrganizationNORTHWESTERN LANCASTER CO AUTH
Phone717-665-4508

Population & Service

Population Served2,968
Service Connections844

Drinking Water Violations (165)

This water system has 165 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
Jul 1, 2025 Sep 30, 2025 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Sep 30, 2025 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Mar 31, 2025 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Mar 31, 2025 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Dec 11, 2018 — Public Notice Other No No — — — Resolved Jan 30, 2019 Public Notice Rule and Revised PN Rule
Dec 11, 2018 — Public Notice Other No No — — — Resolved Jan 30, 2019 Public Notice Rule and Revised PN Rule
Dec 1, 2017 Dec 31, 2017 Surface Water Treatment Rule MR No No — — — Resolved Dec 31, 2017 Surface Water Treatment Rule
Dec 1, 2017 Dec 31, 2017 Surface Water Treatment Rule MR No No — — — Resolved Dec 31, 2017 Surface Water Treatment Rule
Dec 1, 2017 Dec 31, 2017 Surface Water Treatment Rule MR No No — — — Resolved Dec 31, 2017 Surface Water Treatment Rule
Dec 1, 2017 Dec 31, 2017 Surface Water Treatment Rule MR No No — — — Resolved Dec 31, 2017 Surface Water Treatment Rule
Nov 1, 2017 Nov 30, 2017 Surface Water Treatment Rule MR No No — — — Resolved Nov 30, 2017 Surface Water Treatment Rule
Nov 1, 2017 Nov 30, 2017 Surface Water Treatment Rule MR No No — — — Resolved Nov 30, 2017 Surface Water Treatment Rule
Nov 1, 2017 Nov 30, 2017 Surface Water Treatment Rule MR No No — — — Resolved Nov 30, 2017 Surface Water Treatment Rule
Nov 1, 2017 Nov 30, 2017 Surface Water Treatment Rule MR No No — — — Resolved Nov 30, 2017 Surface Water Treatment Rule
Apr 1, 2017 Jun 30, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2016 Dec 31, 2016 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2016 Dec 31, 2016 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2016 Dec 31, 2016 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2016 Dec 31, 2016 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 12, 2011 — Public Notice Other No No — — — Resolved Sep 7, 2011 Public Notice Rule and Revised PN Rule
Jul 12, 2011 — Public Notice Other No No — — — Resolved Sep 7, 2011 Public Notice Rule and Revised PN Rule
Jul 11, 2011 — Public Notice Other No No — — — Resolved Sep 7, 2011 Public Notice Rule and Revised PN Rule
Jul 11, 2011 — Public Notice Other No No — — — Resolved Sep 7, 2011 Public Notice Rule and Revised PN Rule
Jul 11, 2011 — Public Notice Other No No — — — Resolved Sep 7, 2011 Public Notice Rule and Revised PN Rule
Jul 11, 2011 — Public Notice Other No No — — — Resolved Sep 7, 2011 Public Notice Rule and Revised PN Rule
Jul 11, 2011 — Public Notice Other No No — — — Resolved Sep 7, 2011 Public Notice Rule and Revised PN Rule
Jul 11, 2011 — Public Notice Other No No — — — Resolved Sep 7, 2011 Public Notice Rule and Revised PN Rule
Apr 1, 2011 Jun 30, 2011 Nitrate MCL Yes No 11.8 MG/L 10 mg/L — Resolved Jun 30, 2011 Nitrate Rule
Apr 1, 2011 Jun 30, 2011 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2011 Nitrate Rule
Apr 1, 2011 Jun 30, 2011 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2011 Nitrate Rule
Apr 1, 2011 Jun 30, 2011 Nitrate MCL Yes No 11.8 MG/L 10 mg/L — Resolved Jun 30, 2011 Nitrate Rule
Apr 1, 2011 Jun 30, 2011 Nitrate MCL Yes No 11.8 MG/L 10 mg/L — Resolved Jun 30, 2011 Nitrate Rule
Apr 1, 2011 Jun 30, 2011 Nitrate MCL Yes No 11.8 MG/L 10 mg/L — Resolved Jun 30, 2011 Nitrate Rule
Jan 1, 2011 Mar 31, 2011 Nitrate MCL Yes No 10.85 MG/L 10 mg/L — Resolved Mar 31, 2011 Nitrate Rule
Jan 1, 2011 Mar 31, 2011 Nitrate MCL Yes No 10.85 MG/L 10 mg/L — Resolved Mar 31, 2011 Nitrate Rule
Jan 1, 2011 Mar 31, 2011 Nitrate MCL Yes No 10.85 MG/L 10 mg/L — Resolved Mar 31, 2011 Nitrate Rule
Jan 1, 2011 Mar 31, 2011 Nitrate MCL Yes No 10.85 MG/L 10 mg/L — Resolved Mar 31, 2011 Nitrate Rule
Jan 1, 2011 Mar 31, 2011 Nitrate MCL Yes No 10.85 MG/L 10 mg/L — Resolved Mar 31, 2011 Nitrate Rule
Jan 1, 2011 Mar 31, 2011 Nitrate MCL Yes No 10.85 MG/L 10 mg/L — Resolved Mar 31, 2011 Nitrate Rule
Oct 1, 2010 Dec 31, 2010 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2010 Dec 31, 2010 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2010 Dec 31, 2010 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2010 Dec 31, 2010 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 12, 2010 — Public Notice Other No No — — — Resolved Nov 29, 2011 Public Notice Rule and Revised PN 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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